This is about as close as you can get with brainwave generator.
(Might not work as well as the original ones, but I seem to get pretty good results with them.)
Focus 10: 100/101.5Hz, 200/204.0Hz, 250/254.0Hz, 300/304.0Hz
Focus 12: 50/50.25Hz, 100/101.5Hz, 200/204.0Hz, 250/254.0Hz,
300/304.0Hz, 400/410.0Hz, 500/510.1Hz, 600/604.8Hz
notes:
*Left/Right Ear
*Volume of all voices is set at 50%
*use pink noise at around 25% to 30% volume
(Might not work as well as the original ones, but I seem to get pretty good results with them.)
Focus 10: 100/101.5Hz, 200/204.0Hz, 250/254.0Hz, 300/304.0Hz
Focus 12: 50/50.25Hz, 100/101.5Hz, 200/204.0Hz, 250/254.0Hz,
300/304.0Hz, 400/410.0Hz, 500/510.1Hz, 600/604.8Hz
notes:
*Left/Right Ear
*Volume of all voices is set at 50%
*use pink noise at around 25% to 30% volume