having errors while converting .mat file to .wav file

2 次查看（过去 30 天）
tammna abid
tammna abid 2012-5-9
x=load('read.mat');
>> f=fieldnames(x);
>> wavwrite(x.(f{1}),8000,'foo.wav')
Warning: Data clipped during write to file:foo.wav
> In wavwrite>PCM_Quantize at 247
In wavwrite>write_wavedat at 267
In wavwrite at 112
>>

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采纳的回答

Daniel Shub
Daniel Shub 2012-5-10
Instead of
wavwrite(x.(f{1}),8000,'foo.wav')
try
nBits = 16;
Y = x.(f{1});
Y = Y./max(abs(Y(:)))*(1-(2^-(nBits-1)));
wavwrite(Y,8000,nBits,'foo.wav')

更多回答（1 个）

Daniel Shub
Daniel Shub 2012-5-9
The error means that at least for one sample either x<-1 or x>1.
EDIT See: http://www.mathworks.com/matlabcentral/answers/17789-why-i-am-gettiing-warning
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Daniel Shub
Daniel Shub 2012-5-9
Thank you equals a vote. I wasn't suggesting you ask in that thread, but rather, that the answer was in the thread.

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