Neural Oscillation Brain Wave modulation with _ _ _ _ _ | |__ (_)_ __ __ _ _ _ _ __ __ _| | | |__ ___ __ _| |_ ___ | '_ \| | '_ \ / _` | | | | '__/ _` | | | '_ \ / _ \/ _` | __/ __| | |_) | | | | | (_| | |_| | | | (_| | | | |_) | __/ (_| | |_\__ \ |_.__/|_|_| |_|\__,_|\__,_|_| \__,_|_| |_.__/ \___|\__,_|\__|___/ ______ \ ______\ \___ ______\ \______ | _____ \______ ______\ \ __-------------____ ______\ / \ / _________ \ / / \ \ _/ / \ \__ / | ___/ \ | \ / | __/ \| \ /\ /\ | || _ _ || /\ / \ / \ || -___- -___- || / \ /\ /\ ____/ \ / \ /\ || || _/ \ / \ / \_______ \ / \/ | | \ \/ \/ \/ / | ___ | \ / | | \ / ( _____ ) \ / \ --- / \ _______/ \ / \_______ / \___________/ \ ***** BANNED IN SAUDI ARABIA ***** A Binaural beat is not a beat from a drummachine or drumkit - it is, quite simply, a remarkable auditory illusion that occurs when you play two different sinewave frequencies in your right and left ear seperataly on headphones. Somehow your brain will percieve the interference pattern of these two frequencies. A new frequency that is the substraction of the two different frequencies. An example: On headphones, in the right ear we play a pure sinewave tone of 600 Hz. In the left ear we play a pure sinewave tone of 605 Hz. ------ | 5 Hz | _--_ ------ _--_ _- -_ _ ______ o _- -_ _ -_- / ____ \ o -_- 600 HZ ___ / / \ \ ____ 605 HZ |_\ /|,_ ,_ |\ /___| / | | ( | | \ \| __ |/ ____/\____/\_____ / \ Now we deduct these two frequencies: 605 hz - 600 hz = 5 hz Our brain will perceive a 5 Hz tone. This is well below our normal auditory perception range of 20 hz - 20 kHz. It happens that 5 Hz is also a brain wave frequency. What are brain waves??? The brain operates at certain frequencies - All kinds of mental states operate on different neural oscillation frequencies - dreaming, focusing, deep relaxation, flow, hypnosis, various forms of altered states of consciousness, deep sleep etc. It is theorized that we can influence these frequencies with external stimuli - like light & sound. The brain's neural oscillations can be 'entrained' to follow the frequencies of these stimuli - like the interference patterns we can perceive created with binaural beats. So these brain waves/neural oscillations operate on the following frequencies: DELTA WAVES 0.2 - 3 HZ Basically the lowest brain wave possible - near the threshold of non existence. This is what you start out with in the womb. Every night you go in this state when you sleep. The Delta wave is associated with slow-wave sleep - the deepest stage of NREM (Non Rapid Eye movement) sleep. THETA WAVES 4 - 7 HZ Asociated with deep relaxation, drowsiness, hypnotic states, dreaming. Colourfull visions inside your mind. ALPHA WAVES 7.5 - 12.4 Hz Ascociated with a relaxed mental state. BETA WAVES 12.5 - 30 Hz ascociated with focus and problem solving So in theory if we create any of these frequencies with our binaural beat technique and play them for a while on headphones our brain should entrain to it and we can make ourselves feel relaxed, drowsey, dreamy etc. This is ofcourse quite whiseywashey science but fun nevertheless! Lets say you want to make some THETA WAVES to get a bit drowsey, or even better put it in your music to influence the listeners brain: We need two sound sources that can produce pure sinewave tones and these sources need to be panned hard left and right. So a mixer comes in handy to do the panning stuff. As for the sound sources we can use two synthesizers, or a DAW, sampler, tone generators, whatever can make a pure sine-waves. If your synth can make triangle waves you can use the filter to soften it to a sinus. _--_ /\ _ - / \ Lowpass Filter --> __- - - _____/ \ / that sh**** - - \/ - _ - Now the difficult thing in this whole venture is to measure the frequency of each synth. We have to know the exact frequencies. There are probably some hardware devices that can measure the exact frequency of a tone, some modular oscilloscopes can do it like the Mordax DATA or ED702 Synth-a-Scope, maybe some tuners? You might have a synthesizer were you can exactly program the frequency you want, but this is one of those things that seems super easy on paper but more difficult in reality. Some DAW's have a build in frequency analyser - we can do it in Ableton for example with the TUNER (you can find it in the Audio Effects map): put the Tuner on the channels that have the soundsource - click on CT to set it to HZ mode. Now you can view the exact frequency in HZ coming in. We want to get some Theta waves, these operate roughly between 4 and 7 Hz...we have to tune the two sound sources so the difference will be within that range. The frequencies can not be lower then 1500 Hz and should be within the audible hearing range. Lets say we take 64.5 HZ and 70.5 HZ - This should result into a 6 Hz interference binaural beat. Pan one soundsource to the hard left and the other one to the hard right. Put on some headphones, check out your binaural beat and start experimenting with neural oscillation brain wave modulation in your music! An easier way to skip the whole measuring process is to use a tone generator where you can exactly enter your frequencies. Like this online wave generater: http://onlinetonegenerator.com/ enter any frequency you want (below 1500 and within the audible human hearing range) and save it to your computer. Enter another frequency so its difference is within the brain wave frequency range you want to use. Save that one too and import both audio files to your DAW, pan them hard left & right and now you can start mucking about with them. Remember: -Headphones should be used - the two different frequencies have to be seperetaly fed into each ear -The frequencies should be audible, within the human hearing range. -Both frequencies must be lower then 1500 Hz -The difference between the two frequencies can not exceed 40 Hz -Pure tone sinewaves should be used. //