📄 blockcon_c.mht

📁 常用的DSP算法集锦

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<BODY><PRE>/* blockcon.c - block convolution by overlap-add method */

void conv();

void blockcon(M, h, L, x, y, ytemp)
double *h, *x, *y, *ytemp;                    /* ytemp is tail of =
previous block */
int M, L;                                     /* \(M\) =3D filter order, =
\(L\) =3D block size */
{
    int i;

    conv(M, h, L, x, y);                      /* compute output block y =
*/

    for (i=3D0; i&lt;M; i++) {
        y[i] +=3D ytemp[i];                     /* add tail of previous =
block */
        ytemp[i] =3D y[i+L];                    /* update tail for next =
call */
        }
}
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