Content-type: text/html Man page of mlib_SignalConv_S16_S16_Sat

mlib_SignalConv_S16_S16_Sat

Section: mediaLib Library Functions (3MLIB)
Updated: 2 Mar 2007
Index Return to Main Contents
 

NAME

mlib_SignalConv_S16_S16_Sat, mlib_SignalConv_S16S_S16S_Sat, mlib_SignalConv_F32_F32, mlib_SignalConv_F32S_F32S - signal convolution  

SYNOPSIS

cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>

mlib_status mlib_SignalConv_S16_S16_Sat(mlib_s16 *dst, 
    const mlib_s16 *src1, const mlib_s16 *src2, mlib_s32 m, 
    mlib_s32 n);

mlib_status mlib_SignalConv_S16S_S16S_Sat(mlib_s16 *dst, 
    const mlib_s16 *src1, const mlib_s16 *src2, mlib_s32 m, 
    mlib_s32 n);

mlib_status mlib_SignalConv_F32_F32(mlib_f32 *dst, 
    const mlib_f32 *src1, const mlib_f32 *src2, mlib_s32 m, 
    mlib_s32 n);

mlib_status mlib_SignalConv_F32S_F32S(mlib_f32 *dst, 
    const mlib_f32 *src1, const mlib_f32 *src2, mlib_s32 m, 
    mlib_s32 n);

 

DESCRIPTION

Each of these functions performs convolution.

For monaural signals, the following equation is used:

         m-1
dst[i] = SUM (src1[j] * src2[i - j])  if m ≤ n
        j=0

        n-1
dst[i] = SUM (src2[j] * src1[i - j])  if m > n
        j=0

where i = 0, 1, ..., (m + n - 2).

For stereo signals, the following equation is used:

               m-1
dst[2*i]     = SUM (src1[2*j] * src2[2*(i - j)])
              j=0

              m-1
dst[2*i + 1] = SUM (src1[2*j + 1] * src2[2*(i - j) + 1])
              j=0

if m ≤ n, or

               n-1
dst[2*i]     = SUM (src2[2*j] * src1[2*(i - j)])
              j=0

              n-1
dst[2*i + 1] = SUM (src2[2*j + 1] * src1[2*(i - j) + 1])
              j=0

if m > n; where i = 0, 1, ..., (m + n - 2).  

PARAMETERS

Each of the functions takes the following arguments:

dst

Destination signal array.

src1

First source signal array.

src2

Second source signal array.

m

Number of samples in the first source signal array.

n

Number of samples in the second 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 TYPEATTRIBUTE VALUE

Interface StabilityCommitted

MT-Level

 

SEE ALSO

attributes(5)


 

Index

NAME
SYNOPSIS
DESCRIPTION
PARAMETERS
RETURN VALUES
ATTRIBUTES
SEE ALSO

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Time: 02:38:09 GMT, October 02, 2010