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mlib_signalautocorrel_s16(3mlib) [sunos man page]

mlib_SignalAutoCorrel_S16(3MLIB)			    mediaLib Library Functions				  mlib_SignalAutoCorrel_S16(3MLIB)

NAME
mlib_SignalAutoCorrel_S16, mlib_SignalAutoCorrel_S16S, mlib_SignalAutoCorrel_F32, mlib_SignalAutoCorrel_F32S - signal auto-correlation SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ] #include <mlib.h> mlib_status mlib_SignalAutoCorrel_S16(mlib_d64 *correl, const mlib_s16 *src, mlib_s32 disp, mlib_s32 n); mlib_status mlib_SignalAutoCorrel_S16S(mlib_d64 *correl, const mlib_s16 *src, mlib_s32 disp, mlib_s32 n); mlib_status mlib_SignalAutoCorrel_F32(mlib_d64 *correl, const mlib_f32 *src, mlib_s32 disp, mlib_s32 n); mlib_status mlib_SignalAutoCorrel_F32S(mlib_d64 *correl, const mlib_f32 *src, mlib_s32 disp, mlib_s32 n); DESCRIPTION
Each of these functions performs auto-correlation. For monaural signals, the following equation is used: 1 n-d-1 correl[0] = ----- * SUM (src[i] * src[i + d]) n - d i=0 For stereo signals, the following equation is used: 1 n-d-1 correl[0] = ----- * SUM (src[2*i] * src[2*(i + d)]) n - d i=0 1 n-d-1 correl[1] = ----- * SUM (src[2*i + 1] * src[2*(i + d) + 1]) n - d i=0 where d = disp. PARAMETERS
Each of the functions takes the following arguments: correl Pointer to the auto-correlation array. In the stereo version, correl[0] contains the auto-correlation of channel 0, and correl[1] contains the auto-correlation of channel 1. src Source signal array. disp Displacement. 0 <= disp < n. n Number of samples in the source signal array. RETURN VALUES
Each of the functions returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
mlib_SignalCrossCorrel_S16(3MLIB), attributes(5) SunOS 5.10 10 Nov 2004 mlib_SignalAutoCorrel_S16(3MLIB)

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mlib_SignalCrossCorrel_S16(3MLIB)			    mediaLib Library Functions				 mlib_SignalCrossCorrel_S16(3MLIB)

NAME
mlib_SignalCrossCorrel_S16, mlib_SignalCrossCorrel_S16S, mlib_SignalCrossCorrel_F32, mlib_SignalCrossCorrel_F32S - signal cross correlation SYNOPSIS
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); DESCRIPTION
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 PARAMETERS
Each of the functions takes the following arguments: correl Pointer to the cross correlation array. In the stereo version, correl[0] contains the cross correlation of channel 0, and correl[1] contains the cross correlation of channel 1. src1 First source signal array. src2 Second source signal array. n Number of samples in the source signal arrays. RETURN VALUES
Each of the functions returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
mlib_SignalAutoCorrel_S16(3MLIB), attributes(5) SunOS 5.10 10 Nov 2004 mlib_SignalCrossCorrel_S16(3MLIB)

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