FreeCalypso > hg > gsm-codec-lib
diff libtwamr/calc_cor.h @ 325:67c31802392b
libtwamr: integrate calc_cor.c
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Thu, 18 Apr 2024 20:12:48 +0000 |
| parents | |
| children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libtwamr/calc_cor.h Thu Apr 18 20:12:48 2024 +0000 @@ -0,0 +1,49 @@ +/* +******************************************************************************** +* +* GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001 +* R99 Version 3.3.0 +* REL-4 Version 4.1.0 +* +******************************************************************************** +* +* File : calc_cor.h +* Purpose : Calculate all correlations for prior the OL LTP +* +******************************************************************************** +*/ +#ifndef calc_cor_h +#define calc_cor_h "$Id $" + +/* +******************************************************************************** +* INCLUDE FILES +******************************************************************************** +*/ +#include "typedef.h" + +/* +******************************************************************************** +* DECLARATION OF PROTOTYPES +******************************************************************************** +*/ +/************************************************************************* + * + * FUNCTION: comp_corr + * + * PURPOSE: Calculate all correlations of scal_sig[] in a given delay + * range. + * + * DESCRIPTION: + * The correlation is given by + * cor[t] = <scal_sig[n], scal_sig[n-t]>, t=lag_min,...,lag_max + * The functions outputs all correlations in the given range + * + *************************************************************************/ +void comp_corr (Word16 scal_sig[], /* i : scaled signal. */ + Word16 L_frame, /* i : length of frame to compute pitch */ + Word16 lag_max, /* i : maximum lag */ + Word16 lag_min, /* i : minimum lag */ + Word32 corr[] /* o : correlation of selected lag */ + ); +#endif