https://en.wikipedia.org/wiki/Beat_(acoustics)#Binaural_beats
- Delta wave – (0.1 – 3 Hz)
- Theta wave – (4 – 7 Hz)
- Alpha wave – (8 – 12.5 Hz)
- Mu wave – (7.5 – 12.5 Hz)
- Beta wave – (12.5 – 30 Hz)
- Gamma wave – (32 – 100 Hz)
https://en.wikipedia.org/wiki/Beat_(acoustics)#Binaural_beats