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cc [ flag... ] file... -lmlib [ library... ] #include <mlib.h> mlib_status mlib_SignalCrossCorrel_S16(mlib_d64 *correl, const mlib_s16 *src1, const mlib_s16 *src2, mlib_s32 n);
mlib_status mlib_SignalCrossCorrel_S16S(mlib_d64 *correl, const mlib_s16 *src1, const mlib_s16 *src2, mlib_s32 n);
mlib_status mlib_SignalCrossCorrel_F32(mlib_d64 *correl, const mlib_f32 *src1, const mlib_f32 *src2, mlib_s32 n);
mlib_status mlib_SignalCrossCorrel_F32S(mlib_d64 *correl, const mlib_f32 *src1, const mlib_f32 *src2, mlib_s32 n);
Each of these functions performs cross correlation.
For monaural signals, the following equation is used:
1 n-1 correl[0] = --- * SUM (src1[i] * src2[i]) n i=0
For stereo signals, the following equation is used:
1 n-1 correl[0] = --- * SUM (src1[2*i] * src2[2*i]) n i=0 1 n-1 correl[1] = --- * SUM (src1[2*i + 1] * src2[2*i + 1]) n i=0
Each of the functions takes the following arguments:
correl
src1
src2
n
Each of the functions returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE.
See attributes(5) for descriptions of the following attributes:
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mlib_SignalAutoCorrel_S16(3MLIB), attributes(5)