5 ms·
CD sampling is 44.1kHz. 22.05kHz is used in plenty of HAs. I haven't seen anything lower (but wouldn't be surprised to learn otherwise) 22kHz sampling isn't a
by ianhowson 7y ago
CD sampling is 44.1kHz. 22.05kHz is used in plenty of HAs. I haven't seen anything lower (but wouldn't be surprised to learn otherwise)
22kHz sampling isn't a problem in practice as:
- HAs focus on speech comprehension, not music. Speech doesn't high much content above 5kHz, so even 22kHz is double the Nyquist rate.
- Music is perfectly enjoyable at 22kHz (but obviously better at 44kHz)
- People getting hearing aids have hearing loss, and the majority of hearing loss is in the high frequencies
- trllamo 7y agoTo add to this, most middle age adults can not hear above 15khz and threshold is very high at 11khz, especially if they were exposed to high sound levels in youth. Virtually no one can hear above 22khz.. if you ever hear people saying they can it is most likely bs. People often tell stories about playing a sound or being in a lab etc. they think they heard above 20khz, but mostly likely what happened is whatever inevitable non-linearity exists in their playback chain acts as a mixer creating frequencies well in the easily audible range.