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dcbias.c
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C/C++ Source or Header
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2000-05-18
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632b
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37 lines
/**********************************************************************
*
* DCBIAS Version 50
*
**********************************************************************
*
* Calculate and remove DC bias from buffer
*
* Inputs:
* LEN - Length of speech buffers
* SPEECH - Input speech buffer
* Output:
* SIGOUT - Output speech buffer
*/
dcbias( len, speech, sigout )
int len;
float *speech, *sigout;
{
int i;
float bias;
register float *ptr1, *ptr2;
bias = 0;
ptr1 = speech+1;
for(i=1;i<=len;i++)
bias = bias + *ptr1++;
bias = bias/len;
ptr1 = sigout+1;
ptr2 = speech+1;
for(i=1;i<=len;i++)
*ptr1++ = *ptr2++ - bias;
}