[music-dsp] Is 10-bit ADC input good enough for speech?

Yaakov Stein yaakov_s at rad.com
Mon Jan 12 23:12:00 EST 2004


> > So: is 10-bits enough to record the human voice "cleanly"? 

For 8000 samples per second speech, 12+ bits is considered
to be "toll quality" (i.e. score of >4 on a scale of 1 to 5).
(Of course these can be squeezed into 8 bits by companding.)

Using fewer than 12 bits adds perceivable background noise,
but it may be good enough for some applications.

Why don't you take a few clean wave files at the sampling rate
you intend using, and either quantize them to 10 bits or add the equivalent
amount of white noise? If you are happy with what you hear,
then go for it.

Jonathan (Y) Stein





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