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techspeaks
Joined: 02 Jan 2007
Posts: 4
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 25 Jan 2007 11:40 quantization |
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AoA to ALL!
I want to read a sound file in matlab, and set the sampling frequency to 8K. and represent each sample in 8-bits. play the result and also plot the frequency spectrum. i expect the spectrum should be from 0 to 4khz. plz tell me how to do all these in MATLAB.
simple & early reply is required.
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usman
Joined: 04 Aug 2005
Posts: 28
Helped: 2
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25 Jan 2007 12:50 Re: quantization |
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u can do it so....
Y = wavread('file name');
Fs=8000;
N=8;
wavwrite(Y, Fs, N,'modified');
wavplay('modified')
best regards,
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25 Jan 2007 12:50 Ads |
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rsrinivas
Joined: 10 Oct 2006
Posts: 419
Helped: 36
Location: bengalooru
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25 Jan 2007 12:52 quantization |
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u can use the wavread command to read the file
and wavplay to play the wav file
note in the above two methods u can change the bits/sample and sampling frequency. but i suggest u to use a wav file which is sampled at 8k si that u can get a nice output.
as a wave file is a digitized oneu cannot quantize it again u can increase or decrease the resolution of bits/sample and if u increase a 8 bit/sample to 16 bit/sample tha sample will be zero padded to make it 16 bits wherin u don't expect any sound quality improvemet
regards
srinivas
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