Newsgroups: comp.sys.ibm.pc.hardware
Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!hchung
From: hchung@aix01.aix.rpi.edu (yinghung chung)
Subject: Re: sampling
Message-ID: <rytgdrj@rpi.edu>
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Organization: Rensselaer Polytechnic Institute, Troy NY
References: <91112.170842EERIG07@TECHNION.BITNET> <1ksgbd-@rpi.edu> <1991Apr24.232415.6115@cc.helsinki.fi>
Date: 25 Apr 91 02:18:19 GMT
Lines: 16


The sampling frequency is dependent on the frequency your of signals.
normally, the sampling frequency has to be twice the highest frequency
of your input signal.   For example, if the highest frewquncy is 4KHz
then your sampling freqeuncy must be at least 8Kz.
If the sampling freq is less than 2x, you will have aliasing problem
For a male voice, a smapling freq at about 8Khz should be good enough 
However, for a female voice, you will need higher than 8kz as female 
voice has a higher pitch than male voice 

Yhchung