[HN Gopher] "432 Hz tuned music can decrease heart rate more tha...
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       "432 Hz tuned music can decrease heart rate more than 440 Hz tuned
       music"
        
       Author : thatxliner
       Score  : 15 points
       Date   : 2024-01-18 21:58 UTC (1 hours ago)
        
 (HTM) web link (pubmed.ncbi.nlm.nih.gov)
 (TXT) w3m dump (pubmed.ncbi.nlm.nih.gov)
        
       | i2pi wrote:
       | Now try 430Hz.
        
         | beebeepka wrote:
         | I could bend a girder to any angle. 30 degrees, 32 degrees, you
         | name it. 31...
        
       | WorkerBee28474 wrote:
       | > Participants: 33 volunteers, not suffering from acute and/or
       | chronic diseases.
       | 
       | The study thinks it's testing A440 vs A432 music. It's probably
       | testing the effect of normal-sounding vs weird-sounding music.
        
         | drojas wrote:
         | > Both sessions used the same music (movie soundtracks) but
         | tuned to 440 Hz on one day and 432 Hz on the other. Each
         | session consisted of 20 min' listening.
        
           | WorkerBee28474 wrote:
           | Are you trying to make a point?
           | 
           | Keep in mind that 1) 100% of study participants would have
           | grown up listening to a particular tuning reference (I think
           | Italy is A440) and 2) to change music from A440 to A432 you
           | either have to slow it down a proportional amount or use an
           | algorithm to chop it into its frequencies and reconstitute
           | it.
        
       | p1mrx wrote:
       | You can test this in Audacity: Right-click on the waveform left
       | panel > Rate > Other... > Reduce 44100 to 43298, or 48000 to
       | 47127.
       | 
       | That's like slowing down the motor on a record player by ~ 2%.
        
       | syndeo wrote:
       | I quite enjoy 432Hz music.
       | 
       | However, I suppose that's because I have perfect pitch and my
       | childhood piano was tuned to 432, so that tuning evokes a certain
       | nostalgia for me.
       | 
       | I doubt there's any real effect that makes 432 special outside of
       | that. If it lowers heart rate vs 440, then let's try 432 vs 424
       | (or whatever the next step would be). I'd bet you'd see similar
       | results.
        
         | wolverine876 wrote:
         | What does the difference between 440 and 432 sound like to you?
        
       | nabla9 wrote:
       | >the study results suggest repeating the experiment with a larger
       | sample pool and introducing randomized controlled trials covering
       | more clinical parameters.
       | 
       | Habituation should be one of the controls.
       | 
       | Novelty alone might explain the effect. What happens after a
       | week, or month of listening music tuned to 432?
        
         | nanolith wrote:
         | I agree. I think that novelty is the likely driving factor
         | here. Most folks wouldn't be able to put their finger on why
         | the music sounds different, and that makes the music more
         | interesting. If the music is calming to begin with, anything
         | that draws them in would calm them further.
        
       | tom_vidal wrote:
       | This 432 Hz theory is sort of like saying that if we measured the
       | meter as being slightly shorter, people would have an easier time
       | running a 5k.
       | 
       | Music exists in multiple keys, and a song can be in a high or low
       | range regardless of what key it's in. Changing the standard
       | tuning wouldn't fundamentally affect anything.
       | 
       | Also, did the study authors simply taking a recording and pitch
       | shift it down to 432 Hz? That would affect the tempo of the song
       | as well as the pitch. Even if they performed time stretching to
       | keep the tempo the same, it shouldn't be surprising that lower
       | pitches make people slightly calmer than slightly higher pitches.
        
       | ShakataGaNai wrote:
       | I would love to see some direct comparison music. Listened to one
       | quick guitar riff on youtube that I could find and 432 just
       | sounded out of tune to me. Which, I suppose, it would be.
       | 
       | I question how much effect this would have over time. 8Hz would
       | be a shockingly small amount of change to not have accidentally
       | stumbled on to this being "better" hundreds of years ago. So I'd
       | wager it's maybe something to do with the music sounds just
       | enough "off" from normal that the mind becomes more engaged with
       | the music.
        
         | hrnnnnnn wrote:
         | It should only sound out of tune if you have perfect pitch.
         | Relative pitch stays the same.
        
       | gizajob wrote:
       | They should have gone to 220 in that case.
        
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       (page generated 2024-01-18 23:01 UTC)