Most of you know how to do this, but I couldn't find a proper tutorial so I thought I'd take a stab. It's very simple and fun. Although the benefits of binaural beats range from the fantastic to total quackery / pseudoscience, they still set the transparent pulse for some of the most relaxing meditation tapes ever made.. and if used sneakily enough in your own work, maybe you could inflict some feelings of paranoia or totally blissful relaxation upon your listeners. It's like playing jesus.
What you need:
-A pair of headphones (don't use speakers for this)
-Subtractive softsynth with at least 2 oscillators (Serum demo works great if you freeze the track)
-GTune / C_Tuner (both are freeware, both work for this)
SAPI 5 TTS Reader // Good voices for TTS
Microphone for foley & backdrops or your own speech
Firstly, you want to trigger two sinewaves. Do not warp or shape anything. Pan one hard left and the other hard right like so:
The real magic happens when you play with the finetuning of one of the oscillators. You should be able to hear some effect immediately with even a small difference of 9 cents while playing a C3 (put your headphones on for this part). If your brain starts to oscillate, you're doing it right. I wouldn't suggest modulating any of this with an LFO unless you really want to kill people, but playing with the parameter in your DAW for a desired effect over a long period of time can be really cool or possibly therapeutic, according to some weirdos.
With your tuner out, you should be able to see exactly what frequencies are happening by muting one of the oscillators.
The idea with binaural beats is that the difference between these two frequencies is what your brain perceives and begins resonating in sync with. If you separate them too much, your brain will eventually figure out where sounds are coming from more specifically and your binaural beat will go bye bye. Keeping your frequencies in check (about 30 - 40 Hz, depending on which interweb you ask) is supposedly ideal. To make things even more hypnotic, modulated noises or miked sounds can create a really nice bed for your binaural beats. As long as the beat is audible in the mix, it's just as effective, so you can really go nuts and whisper all sorts of subliminal messages to your listeners.