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> - You can only encode to FLAC. Because of the lossy psycho-acoustic nature of Mp3 encoding, it strips out the inaudible part of waves that you apparently need
by humbledrone 13y ago
> - You can only encode to FLAC. Because of the lossy psycho-acoustic nature of Mp3 encoding, it strips out the inaudible part of waves that you apparently need
This is not correct. You can lossily compress the audio that produces binarual beats and it's just fine. All it really is is two pitches being played, one of the left channel and one on the right. The two channels play tones that are almost the same pitch (but not quite, usually separated by 4-20 Hz). There's no inaudible part of the waves. Two sine waves work great, with no harmonics, and nothing inaudible about them. Unless your mp3 encoder is changing the pitch of the sine waves (which it isn't), it will work perfectly.
You can find all sorts of (compressed) Youtube videos with binaural beats that are reproduced correctly.
- redact207 13y agoI said "apparently" as I never noticed a difference between flac and mp3. What I read was along the lines of - one technique mp3 uses is to remove the parts of a sound file that the human ear doesn't actually hear - parts which would appear in flac and that apparently do have an effect of the beats. Could have just been marketing hocus pocus, but who knows as all the encoded beats online appear as mp3s.
- melloclello 13y agoMP3 tends to remove some of the phase information (though I don't know how applicable this would be at lower frequencies) from the signal, which would quite likely have some effect on binaural beats.
- nitrogen 13y agoIt depends on whether you're using pure tones, or phase shifted audio. Binaural beats in phase shifted audio do not survive MP3 encoding, and require a high quality setting to survive Vorbis.