[HN Gopher] Why are my headphones buzzing whenever I run my game?
       ___________________________________________________________________
        
       Why are my headphones buzzing whenever I run my game?
        
       Author : pacificat0r
       Score  : 119 points
       Date   : 2025-12-03 15:30 UTC (7 hours ago)
        
 (HTM) web link (alexene.dev)
 (TXT) w3m dump (alexene.dev)
        
       | vanschelven wrote:
       | There's a certain cinematic quality to this story... perhaps so
       | much so that if it were to be included in an actual movie it
       | would be seen as "too over the top" (i.e. CSI-like)
        
       | Popeyes wrote:
       | I was going to say get a DAC, but they already had one in their
       | setup.
        
         | FinnKuhn wrote:
         | The DAC is what is causing this issue for me sometimes -
         | unplugging and pluggin it back in solves it though.
        
       | kevindamm wrote:
       | The source is electrical noise, but the solution of isolating the
       | audio chain from the computer's USB means that in the future you
       | might not notice when you've introduced another GPU memory
       | bandwidth hog into your rendering loop.
       | 
       | Good story, though.
        
         | jraph wrote:
         | That might be the strongest spacebar heating workflow situation
         | I've actually run into so far
         | 
         | https://xkcd.com/1172
        
         | PunchyHamster wrote:
         | Just attach a scope to your power lines, boom, live feedback on
         | what your renderer is doing.
         | 
         | I wonder if that will be next fad in PC building, just putting
         | live power line graph on the screen inside
        
           | kevindamm wrote:
           | replace the scope with a dimmable light and we might have a
           | better solution than low-decibel audio hum
           | 
           | or perhaps live wire into the seat, tied into a transistor on
           | this signal, so if performance drops enough you're sure to be
           | alerted to it
        
           | ZeWaka wrote:
           | Honestly, would be a sick mod for the upcoming configurable
           | Steam Machine front face.
        
       | LM358 wrote:
       | Not at all surprised to see that it's a Schiit DAC causing this
       | problem
        
         | ShipEveryWeek wrote:
         | What's with the animosity towards Schiit? They seem to make
         | decent products. Noise from using USB power delivery for audio
         | devices is common.. that's why you can (and should) use the
         | dedicated power input to you DAC/amp
        
           | LM358 wrote:
           | >They seem to make decent products
           | 
           | I don't agree with that sentiment. Their designs are subpar
           | and the quality of the soldering is (maybe was) unacceptable:
           | 
           | https://www.audiosciencereview.com/forum/index.php?threads/h.
           | ..
           | 
           | https://www.audiosciencereview.com/forum/index.php?threads/b.
           | ..
           | 
           | The above review specifically goes into the problem from OP.
           | 
           | There's also their amplifier with a rather non-standard
           | architecture that tries to solve a non-problem (injecting
           | feedback in a NFB loop - I might remember wrong, if so,
           | forgive me) which leads to it measuring double digit (!) THD
           | if you feed it a sine wave. I'm not an experienced engineer
           | but it is IMO a non-starter to have an amplifier try to
           | decide what is and isn't a musical signal as part of its
           | protection circuitry, short of detecting DC offsets or shorts
           | (pun not intended). I'm not in the market for a 1800$
           | amplifier that goes bzzzt if you feed it music it disagrees
           | with [1]
           | 
           | https://www.stereophile.com/content/schiit-audio-ragnarok-
           | in...
           | 
           | >Noise from using USB power delivery for audio devices is
           | common.. that's why you can (and should) use the dedicated
           | power input to you DAC/amp
           | 
           | I don't _disagree_ with your point. However, a company
           | designing products like these should be able to design a
           | filter for this usecase unless you 're trying to use your DAC
           | as a a measuring device, or there is something _seriously_
           | wrong with your motherboard. I honestly haven 't heard of any
           | other brand product with this problem unless it's ~20 years
           | old and in need of repair. It doesn't cost much in the BOM,
           | however it does cost in engineering hours/competence and QA
           | and this is something that should have been caught by the
           | latter.
           | 
           | [1] https://www.youtube.com/watch?v=NzMbY4sZvIw
           | 
           | Edit: I just want to add that I don't _want_ to hate on
           | Schiit. Honestly I 'd like new audio companies to succeed and
           | I applaud them for rejecting MQA back in the day and for not
           | going all-in on the audiofool bullshit one sees too much of.
           | But seeing such poor engineering and QA leaves a sour taste
           | in my (electronics engineering) mouth. Maybe they have
           | improved lately, I wouldn't know. I'm not really in their
           | market anyways.
        
             | pacificat0r wrote:
             | Wow, that's exactly what I have, a MODI 2. Time for a
             | change I guess
        
               | LM358 wrote:
               | Look, if it works for you and you're happy with it - keep
               | it. More power to you.
               | 
               | I just know that if I handed over something with such
               | shoddy soldering to a customer, I'd lose my job or at the
               | very least lose soldering privileges. But I am working
               | with things that cost _slightly_ more than 99$ that you
               | can 't find on store shelves :)
        
             | scrlk wrote:
             | Schitt did step up their engineering and quality in the
             | last few years, in response to Amir/ASR reviews.
             | 
             | E.g. https://www.audiosciencereview.com/forum/index.php?thr
             | eads/s...
             | 
             | > No doubt you have noticed my frequent use of terms "nice"
             | and "excellent" and that sums up the performance of Modi+.
             | At this price point, we don't expect objective perfection
             | but competent engineering and that is what we have.
             | Physically, the unit is solidly built and of course
             | supported by an English speaking US company. For people
             | with such preference, the Modi+ provides an excellent
             | option. That they can stay competitive with far east audio
             | companies is definitely a feather in their cap.
             | 
             | > I am going to recommend the Schiit Modi+ DAC. Great to
             | see Schiit continue the (new) tradition of optimizing
             | objective performance as they cater to their traditional
             | audience.
        
         | Fire-Dragon-DoL wrote:
         | I'm not sure if you are joking around the sound of the brand
         | name, or complaining about the actual brand
        
         | fbd_0100 wrote:
         | why do you say that? I used a Schiit Bifrost for many years
         | without issue
        
         | nickdichev wrote:
         | Why is that? I've generally only seen positive feedback on
         | their stuff
        
         | ge96 wrote:
         | That's funny it's actually named Schiit I thought that was a
         | joke
        
         | tristor wrote:
         | Schiit Audio makes great stuff, I've been using it for years
         | and have other gear as well to compare to. I think it's good
         | for what it is, although their pricing has gone a bit out of
         | control lately. The problem here is not the maker of the DAC,
         | it's that it's bus powered over USB, which is a problem
         | regardless of who makes it.
        
       | vardump wrote:
       | These effects used to be much worse in the nineties, often even
       | if you had a fancy sound card. Electrical noise is significantly
       | reduced now.
        
       | Garvi wrote:
       | That's a common problem. It's electrical noise in your signal.
       | The only way I know how to completely eliminate it is using
       | external DA/AD converters and connecting them to the PC using
       | optical wires. We used MADI cards back in the studio back in the
       | day.
        
         | PunchyHamster wrote:
         | you can do a lot with just good power filtering and maybe a
         | ferrule on the USB cable to cut the high frequency stuff before
         | it even gets to device. I'd imagine powered USB hub might help
         | too.
         | 
         | I wonder if there is a market for motherboard targetting
         | musicians that just have extra power filtering on USB power.
         | 
         | There are also just USB devices that have just plugs + some LC
         | filter that might help, for example
         | https://oshwlab.com/wagiminator/usb-power-filter
        
       | diath wrote:
       | > A picking texture is a very simple idea. As the name says, it's
       | used to handle picking in the game, when you click somewhere on
       | the screen (e.g. to select an unit), I use this texture to know
       | what you clicked on. Instead of colors, every object instance
       | writes their EntityID to this texture. Then, when you click the
       | mouse, you check what id is in the pixel under the mouse
       | position.
       | 
       | Unrelated, but why? Querying a point in a basic quad tree takes
       | microseconds, is there any benefit to overengineering a solved
       | problem this way? What do you gain from this?
        
         | rcxdude wrote:
         | It aligns with what appears on the screen accurately and
         | without needing any extra work to make sure there's a
         | representation in a tree that's pixel-accurate. It's also
         | pretty low overhead with the way modern GPU rendering works.
        
           | diath wrote:
           | What if you have a collision system where collision filters
           | can exclude collisions based on some condition in such a way
           | that their bounding boxes can overlap? For instance an arrow
           | that pierces through a target to fly through it and onto
           | another target? How do you accurately store the Entity ID
           | information for multiple entities with a limited number of
           | bits per pixel?
        
             | pacificat0r wrote:
             | Entities that can't be picked, don't write to the texture,
             | entities that can be picked, write to the texture their id.
             | Whatever is closer to the camera will be the id that stays
             | there (same as a color pixel, but instead of the object
             | color you can think object id). So you are limited at one
             | ID per pixel, but for me that works.
        
         | pacificat0r wrote:
         | Well, it's significantly easier to implement than a octree.
         | Game is actually 3D under the hood, projected at a careful
         | angle to look isometric 2D.
         | 
         | The reason the game is 3D has to do with partially visible
         | things being way easier than with isometric textures layered in
         | the right order.
         | 
         | Also, now that i just grab a pixel back from the GPU, it's no
         | overhead at all (to construct or get the data for it).
        
         | matja wrote:
         | A point in screen space is a line in world space after inverse
         | camera projection, so this way you get the line-to-closest-
         | geometry test in O(1), after the overhead of needing to render
         | the lookup texture first.
        
       | asimovDev wrote:
       | I have a similar issue with Genshin on PS5 when using the
       | headphone jack in the controller with IEMs (didn't happen with a
       | headset). It starts buzzing in my left ear when I open the game
       | menu or open the map. On the map it only buzzes when I move the
       | cursor, interestingly enough. I later noticed that the PSU coil
       | whine coincided with the same events. Still no idea why it's like
       | that
       | 
       | Thankfully doesn't happen with an external DAC.
        
         | embedding-shape wrote:
         | > On the map it only buzzes when I move the cursor,
         | interestingly enough
         | 
         | Sounds like the game is doing more when the cursor moves
         | around, they're probably checking for where the cursor is, and
         | something is making the CPU/GPU do a bunch of extra work, which
         | finally triggers the coil whine when the PSU is more heavily
         | used.
         | 
         | I've basically had the same issue with Nvidia cards since the
         | 2080ti started doing coil whine as soon as I opened Unreal
         | Engine. Some programs trigger different sounds, depending on
         | how much/well they use the GPU, and I've had the literal same
         | experience with "hovering with my mouse over element X triggers
         | coil whine" multiple times before.
        
           | trillic wrote:
           | They connected the headphones to a wireless controller. The
           | wireless controller doesn't have a GPU.
        
       | bluedino wrote:
       | I remember 15+ years ago reading about certain laptops (Dell?)
       | that you could 'hear' scrolling on websites, somehow the video
       | chip was interfering with the sound chips. I had one at the time
       | it was pretty weird.
        
         | PunchyHamster wrote:
         | Pretty common problem on builtin sound cards, even now. It's
         | just very close to the noise source.
         | 
         | Shouldn't really happen on USB DAC, it should have enough
         | filtering to get any interference injected by power, and enough
         | shielding (and just being far away enough from machine) for
         | other EMI
        
           | icelancer wrote:
           | Yeah this is the main reason to use a USB DAC. I guess you
           | get marginally better sound quality (more noticeable on
           | expensive studio headphones that need more power to drive
           | them) but better isolation/removal from the noise source is
           | the main reason I use them. Especially relevant because in my
           | travel I'm often in countries that don't have ground plugs in
           | their power sources.
        
         | azraellzanella wrote:
         | I get this on my MacBook M1, I "hear" some websites "static"
        
         | tecleandor wrote:
         | Happens to my Lenovo X390, specially with disks writes...
        
         | bogwog wrote:
         | Maybe I have sensitive hearing, but I encounter this frequently
         | on machines from all manufacturers. It is very much still a
         | problem today.
        
         | distances wrote:
         | Quite a flashback. I switched to optical TOSLINK maybe about 20
         | years ago, which solved all those issues obviously. It's a bit
         | weird how rare optical outs are on motherboards even today --
         | clearly less than half have them -- when it is such a useful
         | interface.
         | 
         | Just ordered a hat for my Raspberry Pi with optical out, with a
         | plan to make that my main music streamer. Excited to see if
         | that works out!
        
           | pyrolistical wrote:
           | Ditto. It's is hard to find non-wifi motherboards with
           | toslink.
           | 
           | All the cheap boards have neither. Most of the high end
           | boards have both
        
             | distances wrote:
             | I updated my computer this year, and didn't find anything
             | without wifi either. So it seems it's a small tax you just
             | have to pay now.
        
           | adrianmonk wrote:
           | I wish Mini-TOSLINK[1] had been more successful. It's allows
           | you to put an optical and electrical audio output on the same
           | 3.5mm connector (i.e. headphone port), which is helpful for
           | saving space on crowded panels.
           | 
           | The trick is that your 3.5mm connector only needs to connect
           | on the sides, so the end of the jack can be open for light to
           | be transmitted.
           | 
           | This was seen pretty frequently on laptops for a while, but I
           | think two things doomed it. One, most people just don't use
           | optical. Two, there's nothing to advertise its existence. If
           | you do have one of these ports, you probably don't even know
           | you could plug an optical connector in there.
           | 
           | ---
           | 
           | [1] https://en.wikipedia.org/wiki/TOSLINK#Mini-TOSLINK
        
         | kace91 wrote:
         | I hear my second hand dell XPS laptop running fedora when I
         | scroll through dropdown lists.
         | 
         | It sounds exactly like the reads on a physical hdd, which is
         | silly because it has an SSD. Haven't figured out what it is
         | yet.
        
         | gwbas1c wrote:
         | I can hear when my Dell laptop uses the flash drive heavily. It
         | sounds kind of like a hard drive, so I actually had to verify
         | that I have a flash chip. Apparently it's a known issue; I've
         | assumed that something in it vibrates due to EMF.
        
         | 0xc0ff338 wrote:
         | I get fairly audiable coil whine when scrolling websites.
        
       | PunchyHamster wrote:
       | It's funny that apparently "high performance" DAC doesn't handle
       | the common issue every single USB audio device have to worry
       | about - noisy power. From the vendor page (on MODI 5, no idea
       | which one author has).
       | 
       | > SPECS THAT MATTER
       | 
       | > Distortion: inaudible; 100-1000x lower than any transducer
       | (speaker or headphone) you're using > Noise: inaudible; far below
       | a typical headphone or speaker amp
        
         | pier25 wrote:
         | > _100-1000x lower than any transducer_
         | 
         | This seems like a lot but it's only 20-30db lower than whatever
         | reference they're using.
         | 
         | This is the spec that really matters: THD+N: 0.0003% which is
         | roughly -110 dB. It's very good and completely inaudible but
         | not exceptional these days.
        
           | Kirby64 wrote:
           | THD+N is irrelevant for the issue the author is describing,
           | through. You need to spec PSRR (power supply rejection
           | ratio). Many individual ICs do not spec this, and pretty much
           | every system does not spec this.
        
             | pier25 wrote:
             | Indeed. I was only commenting on the 100-1000x claim.
        
         | TazeTSchnitzel wrote:
         | The fact audiophiles talk about "DAC"s is really telling.
         | Transparent digital-to-analogue conversion is a solved problem.
         | Any computer or smartphone worth a damn has a DAC whose output
         | is indistinguishable to the human ear from anything "better".
         | 
         | The truth is that _DAC_ is not the problem... _everything else_
         | in the analogue audio chain is. Amplifiers are messy analogue
         | devices. Speakers and headphones are _incredibly_ messy
         | analogue devices. Power supplies and power conditioners are
         | messy analogue devices. And noise is not down to any one
         | component, but is a whole-system design problem. A particularly
         | cool thing about power supplies is that they often create noise
         | that will be picked up by other devices on the same circuit.
         | 
         | Of course, when people are buying a "DAC" they are really
         | buying a box of some kind that also includes an amplifier, but
         | this naming choice surely contributes to people paying
         | attention to the wrong specs.
        
       | klamann wrote:
       | I've been using optical connections for audio on my gaming PCs
       | for decades now, exactly for this reason. Though wireless
       | headphones will work just as well these days. Too many game
       | developers mess this up (e.g. by having no frame limiter in the
       | game menu) and many of them never fix these kinds of issues.
       | Thanks for caring and fixing this in your game!
        
       | tristor wrote:
       | Which is why I consistently have told people to ensure that they
       | pick a DAC which is powered independently if they intend to
       | connect it via USB. Schitt Audio makes great stuff (it's what I
       | have sitting on my desk right now) which is designed in that way,
       | but there's no magic formula to beat physics when you physically
       | power an audio device over a connection that is vulnerable to
       | induced noise.
       | 
       | If you're trying to eliminate noise in your audio setup, the
       | first and most important thing is having audio converted from
       | digital to analog outside of the computer chassis itself (e.g.
       | instead of a soundcard get a DAC). The second thing is to
       | disconnect the power flows between the two systems (e.g. get a
       | DAC which is separately powered). The third thing is to connect
       | the DAC via a non-electrical connection so that the signal path
       | is not vulnerable to noise in the environment between the two
       | systems (e.g. use Toslink/optical and not USB/copper). The fourth
       | thing is to condition the power input to DAC to remove transients
       | (use an audio power conditioned, which does not need to be some
       | grandiose thing, it's a bunch of capacitors).
       | 
       | Beyond that, there's not much you can do, after all there's
       | EMI/RFI all of the time in the environment. If the DAC chassis is
       | metallic and properly grounded, it should reject most, and the
       | same should be true for the computer chassis, but there is always
       | going to be /some/ incidental noise. As long as the noise floor
       | is low enough that it's well below even quiet listening with
       | amplification, you'll never hear it. But the default state of
       | audio on most computer systems is pretty shit and people don't
       | realize it, because they are mostly listening to Bluetooth
       | earbuds (which at least provide no physical path for induced
       | noise).
        
       | thenthenthen wrote:
       | Moving my cursor makes an audible sound over my (builtin) audio
       | card. I always blamed inductors somewhere (noisy power). This has
       | never not been the case with any desktop with built-in audio I
       | have owned over the past 25+ years
        
         | distances wrote:
         | For your next desktop, get a motherboard with an optical audio
         | output. Or add a soundcard with that for your current computer,
         | those are still made.
        
       | ericbarrett wrote:
       | I have a Modi DAC I've used for years with several different
       | gaming and development rigs and I've never had a problem like
       | this. Sounds like a failing component, maybe a capacitor or
       | regulator--the article author should contact Schiit.
        
       | nottorp wrote:
       | I have an usb "audio card" for other reasons (since my
       | hackintoshing days).
       | 
       | It works fine in some ports, it has a lot of background noise in
       | others.
        
       | Night_Thastus wrote:
       | I run into a similar problem. I have a power-hungry GPU (3080)
       | and CPU (9800X3D).
       | 
       | All my audio equipment was on the same UPS (and therefore outlet)
       | as my gaming PC.
       | 
       | The result is that any time a particularly stressful game would
       | be open, I'd get buzzing in the speakers. (Especially if the
       | framerate was at 360) If you ask audiophiles online they will
       | swear up and down that a cheater plug, balanced cables, or
       | optical isolation will fix it - that will not fix it. It's not a
       | ground problem. It's not coming from the connection from the PC
       | to the DAC - it's a power issue.
       | 
       | It seemed almost inconceivable to them that the problem was EMI
       | from the computer making it into the equipment.
       | 
       | I temporarily got a double-conversion UPS (converts AC to DC to
       | AC again) and housed the audio equipment on that instead
       | (separate from PC) Lo-and-behold the noise was completely gone.
       | 
       | However, those UPS are _extremely_ expensive, and far worse they
       | 're very loud because the fans run constantly.
       | 
       | So, I went with a simpler alternative. Just get a power strip and
       | plug all the audio equipment into that on a _different_ outlet.
       | That reduces it massively. You can also get some strips that are
       | designed to reduce EMI, but I haven 't felt the need as of yet.
        
         | monster_truck wrote:
         | Pure sine wave UPSs are not that expensive anymore man. I think
         | the biggest "desktop" pure sine wave cyberpower sells
         | (1500VA/1000W, CP1500PFCLCD) is <$300 now. I have a couple of
         | them, they are great.
        
           | Night_Thastus wrote:
           | It's not about pure sine wave - it's double conversion. Only
           | double-conversion would actually isolate the equipment from
           | EMI on the line. Without that pure sine wave won't do squat
           | for EMI.
           | 
           | And one of those, even the cheapest ones, run for about
           | ~$900. And they are LOUD.
        
             | LoganDark wrote:
             | Are they loud because they're double-conversion or are they
             | loud because they're designed for server racks? When I
             | search for double-conversion online I can practically only
             | find rack-mount solutions.
        
               | Night_Thastus wrote:
               | They're loud because unlike a regular UPS they need to
               | run continually to convert the power back and forth. That
               | generates a lot of waste heat, which fans must remove.
        
               | arde wrote:
               | They're loud because silence is not a priority in their
               | design and their fans run non-stop.
        
             | saltcured wrote:
             | I wonder if modern motor and power control tech could be
             | adapted to make a desk-side motor-generator set that is
             | efficient enough to rival an always-active, dual conversion
             | AC-DC-AC UPS.
             | 
             | How efficient could a small AC->motor->generator->AC chain
             | be with a modest flywheel mass to provide cycle-to-cycle
             | stability?
             | 
             | Could it ever make sense to put one of these after a
             | standby UPS so the output is always filtered by the motor-
             | generator but the UPS only has to kick in for outages?
        
               | mrob wrote:
               | One advantage of a motor-generator set is that it's
               | relatively easy to get high-voltage isolation using an
               | insulating shaft. It might be possible to build something
               | that could survive nearby lightning strikes to the
               | incoming AC line. I don't think any standard UPS can do
               | this.
        
         | Gracana wrote:
         | If you're a bit handy, you can assemble a line filter using a
         | part like this https://enerdoor.com/products/fin27/ for a heck
         | of a lot cheaper than you can buy a filtered power strip.
         | 
         | You may also be able to solve the problem with a simple common
         | mode choke, either the clip-on type, or a toroid that you wrap
         | the cable through a couple-few times. https://palomar-
         | engineers.com/rfi-kits/acdc-power-line-choke...
        
           | LM358 wrote:
           | A filter like that will have very little attenuation in the
           | audio spectrum.
           | 
           | I agree however that indiscriminately throwing ferrites at
           | problems can be a good solution!
        
             | Gracana wrote:
             | Maybe you're right. My experience is with radios, where
             | it's possible that high frequency noise is conducted into
             | the RF section rather than into the audio amplifier. I know
             | that in one case, both my transmitted signal and received
             | audio output were absolute garbage (edit: because it was
             | picking up noise from the vehicle ignition) until I added a
             | choke to the power input wiring.
        
             | 0_____0 wrote:
             | This reminds me of my favorite "Downfall" meme video.
             | 
             | [Youtube] "Hitler fails radiated emissions" - Orin Laney:
             | https://www.youtube.com/watch?v=eeo8ZZTfwZQ
        
             | mrob wrote:
             | Even if there's very little audio-frequency attenuation,
             | it's possible for higher frequencies to produce audio-
             | frequency intermodulation distortion, and filtering could
             | reduce this. This is one reason "high definition"
             | (ultrasound sampling rate) audio is a bad idea as a
             | listening format.
        
         | Yeask wrote:
         | No need for UPS, a good external usb soundcard with power
         | supply will solve that problem.
         | 
         | I have all connected to the the same power circuit and with a
         | Elektron Digitakt as audio device and have zero noise.
         | 
         | With audio devices powered by USB there is a lot of noise.
        
           | blep-arsh wrote:
           | I also have a splitter which lets you power an USB device
           | from a separate power supply (i.e. D+/D- lines are connected
           | to a host and +5V comes from a separate plug, ground is
           | shared though). And optical TOSLINK is a nice option where
           | available.
        
           | Night_Thastus wrote:
           | _Sigh_ , it's almost like I had this conversation before.
           | 
           | My audio equipment is not connected by USB. It's connected by
           | optical (TOSLINK) to an external DAC. TOSLINK is not great,
           | but it shows that it is not a USB noise problem.
        
             | Yeask wrote:
             | If you had that conversation before and you still having
             | noise, maybe you are not doing the right thing... Sigh...
        
               | Night_Thastus wrote:
               | I got rid of the noise via the method I described in the
               | original comment? Moving my audio equipment to separate
               | power strip on a separate outlet. It didn't totally
               | remove it, but made it quiet enough to deal with.
        
               | butvacuum wrote:
               | Don't mind them. I've had a similar thing happen, but
               | with power line Ethernet. In your case however, I'd be at
               | least a little concerned about the building wiring.
        
               | Night_Thastus wrote:
               | I ran into a similar problem! I briefly used CAT6, which
               | is _required_ to be shielded.
               | 
               | That shielding was carrying noise from my PC, through the
               | network switch, to my raspberry pi that I used for music
               | streaming. Absolutely nuts.
               | 
               | I swapped to unshielded ethernet cables and it went away.
               | 
               | As for building wiring, this issue has persisted in
               | multiple buildings.
        
         | bob1029 wrote:
         | > If you ask audiophiles online they will swear up and down
         | that a cheater plug, balanced cables, or optical isolation will
         | fix it - that will not fix it.
         | 
         | Lifting the ground on my studio monitors absolutely fixed my
         | noise problems. I run them off a MiniDSP 2x4HD, so other
         | sources like EMI aren't really a factor.
         | 
         | The problem I have with a double conversion UPS is that it
         | isn't an ideal sinusoidal source. It implies it is on the tin,
         | but when you've got protected loads with PWM power delivery
         | slamming around 1+ kilowatts, there's no way to guarantee a
         | smooth waveform with a typical ~2500VA unit. Directly passing
         | through to the grid could provide cleaner power under the most
         | transient conditions.
        
         | brigade wrote:
         | Well the OP's electrical noise almost certainly is coming
         | through the USB connection as their DAC has no external power
         | supply. _Extremely_ common.
         | 
         | Your problem of an AC power supply not sufficiently filtering
         | out high-frequency noise from mains is exceptionally rare to
         | the point that yes, I also don't believe that was the correct
         | diagnosis of your issue.
        
         | voldacar wrote:
         | You could also chuck a bunch of ferrites on your PC power cord
        
         | ck2 wrote:
         | isolation transformers are way cheaper than double conversion
         | and should work as well?
         | 
         | well they used to be cheaper, not sure what is going with
         | prices these day, I remember this being around $100 a decade
         | ago
         | 
         | https://www.officedepot.com/a/products/146730/Tripp-Lite-500...
         | 
         | https://www.officedepot.com/a/products/493958/Tripp-Lite-100...
        
         | ThePowerOfFuet wrote:
         | >the problem was EMI from the computer making it into the
         | equipment
         | 
         | Do you have a PC case with a huge window? They (used to?) have
         | grounded metal housings with only tiny openings for a reason.
        
         | terribleperson wrote:
         | So in your situation, noise from your PC was showing up in
         | other equipment on the same circuit.
         | 
         | Did you try replacing the PSU?
        
       | bitbasher wrote:
       | Not sure if it's related-- but anyone else get a buzz or pop in
       | their headphone/spear when loading certain web pages?
       | 
       | I've been curious if this is some form of browser fingerprinting
       | or just crappy speakers.
        
       | LUmBULtERA wrote:
       | Since switching to the $10ish Apple USB-C to headphone adapter
       | vs. just plugging in my 3.5mm headset into the computer, the
       | buzzing when gaming completely stopped for me. Cheap solution.
        
       | hlynurd wrote:
       | I have this weird thing whenever I have headphones and open the
       | Dota2 settings on my Mac, then I not only get buzzing but the
       | overall sound quality plummets!
        
         | DefineOutside wrote:
         | Bluetooth headphones? the settings menu could be using the
         | microphone somehow and switching to mono audio because
         | bluetooth is low bandwidth
        
           | hlynurd wrote:
           | Oh yeah, Bluetooth headphones, I think this might actually
           | explain it.
        
       | digitalsushi wrote:
       | anyone else get big audio buzz relief using the extra, three
       | prong cable on their normally two prong apple laptop charger? it
       | felt as good as having my wisdom teeth out after i switched
        
       | phaser wrote:
       | Your game looks super interesting! Very looking forward to
       | playing :D
        
       | spiritplumber wrote:
       | I had this problem on my Oculus Rift box (remember those? it
       | still runs beat saber just fine) and the solution was to solder
       | some beefy capacitors on the end of unused power cables coming
       | out of the power supply. If I recall correctly it was the 12V
       | line that did it, which I didn't expect.
       | 
       | The buzz isn't completely gone but now I can't hear it unless I'm
       | paying attention to it, which if I am playing beat saber, I'm
       | not.
        
       | SpaceManNabs wrote:
       | I am a bit confused. Based on the earlier paragraphs, it hinted
       | that the solution would be related to the frequency of the job,
       | not necessarily its load (since other games do not have this
       | issue), but then the fix was not changing the frequency but the
       | load of the job.
       | 
       | What am I missing?
        
       | glitchc wrote:
       | Reading through your post, it's likely the noise sourced from the
       | network cable is coupling into your headset cable. Check how
       | close those cables are to each other If you're using a USB port
       | at the back for your DAC, try switching it to the front. The
       | noise can also come from the power supply which couples into the
       | motherboard's ground plane and shows up on all USB ports.
        
       | dbg31415 wrote:
       | I hit a similar issue on my MacBook Pro. Whenever I watched
       | YouTube or streamed Spotify while playing a game, the audio broke
       | into little "clipping chirps" and static.
       | 
       | For me the culprit was Game Mode. I still don't really know what
       | it does, but disabling it fixed everything. None of my games come
       | close to stressing the CPU, yet Game Mode was throttling anything
       | that wasn't the game. It was also on by default, which felt like
       | a design miss.
       | 
       | For MacOS, a better approach would be to check what's happening
       | on the second monitor or at least avoid throttling apps that
       | aren't being displayed. Assuming the game deserves all system
       | resources and that the user doesn't want to watch or listen to
       | anything else is a bad bet.
       | 
       | Anyway, the good news is the fix on a Mac is simple once you know
       | where to look. (=
        
       | kg wrote:
       | Great write-up. This is basically spam but I want to specifically
       | thank the author for pointing out their solution, because it's
       | directly applicable to one of my own projects and I'm going to do
       | it tonight!
       | 
       | > There's no need to download the whole texture each frame, just
       | the part of the picking texture that's under the mouse. So I
       | implemented that and it worked and buzzing is gone. As a bonus,
       | now it's also not visible at all on the GPU trace.
        
       | mistyvales wrote:
       | Schiit Modi 2 is notorious to struggle with cleaning up USB power
       | 
       | Example
       | https://www.audiosciencereview.com/forum/index.php?threads/b...
        
       | lnx01 wrote:
       | 25 years ago my 3.5mm jack headphones would buzz whenever I moved
       | the mouse... Bzzzzzzzzz,tk, tk, tk ,tk, bzzzzzzz, tk, tk, tk, tk,
       | tk....
        
       | pfcd wrote:
       | > I am working on an isometric game inspired from Gnomoria,
       | RimWorld, Dwarf Fortress, etc.
       | 
       | That sounds interesting. Could you elaborate further?
        
       | jofzar wrote:
       | > I had a fairly decent CPU, a 3090RTX card, 32GB RAM
       | 
       | The answer might be more simple, OP when have you updated your
       | chipset/mobo drivers?
       | 
       | This was a known issue (which I was also effected by) for amd
       | chips that would fuck with the USB driver when the PCIE lane
       | pulled was in pcie 4 (my memory is a bit rough in this)
       | 
       | https://au.pcmag.com/motherboards/85999/amd-offers-tips-to-m...
       | 
       | Here's an article about it at the time but tldr update your
       | chipset+motherboard drivers.
        
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