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Viewing changes to libaf/filter.c

  • Committer: William Grant
  • Date: 2007-02-03 03:16:07 UTC
  • mto: This revision was merged to the branch mainline in revision 16.
  • Revision ID: william.grant@ubuntu.org.au-20070203031607-08gc2ompbz6spt9i
Update to 1.0rc1.

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libaf/filter.c
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   Note that a0 is assumed to be 1, so there is no wrapping
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   of it.  
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*/
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void af_filter_prewarp(_ftype_t* a, _ftype_t fc, _ftype_t fs)
 
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static void af_filter_prewarp(_ftype_t* a, _ftype_t fc, _ftype_t fs)
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{
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  _ftype_t wp;
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  wp = 2.0 * fs * tan(M_PI * fc / fs);
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   Return: On return, set coef z-domain coefficients and k to the gain
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   required to maintain overall gain = 1.0;
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*/
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void af_filter_bilinear(_ftype_t* a, _ftype_t* b, _ftype_t* k, _ftype_t fs, _ftype_t *coef)
 
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static void af_filter_bilinear(_ftype_t* a, _ftype_t* b, _ftype_t* k, _ftype_t fs, _ftype_t *coef)
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{
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  _ftype_t ad, bd;
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