www.pudn.com > AVS_M_ver10.rar > lag_wind.c
/*
***********************************************************************
* COPYRIGHT AND WARRANTY INFORMATION
*
* Copyright 2007 Audio Video Coding Standard, Part ¢ú
*
* This software module was developed by AVS Audio sub-group
*
* DISCLAIMER OF WARRANTY
*
* These software programs are available to the users without any
* license fee or royalty on an "as is" basis. The AVS disclaims
* any and all warranties, whether express, implied, or statutory,
* including any implied warranties of merchantability or of fitness
* for a particular purpose. In no event shall the contributors or
* the AVS be liable for any incidental, punitive, or consequential
* damages of any kind whatsoever arising from the use of this program.
*
* This disclaimer of warranty extends to the user of this program
* and user's customers, employees, agents, transferees, successors,
* and assigns.
*
* The AVS does not represent or warrant that the program furnished
* hereunder are free of infringement of any third-party patents.
* Commercial implementations of AVS, including shareware, may be
* subject to royalty fees to patent holders. Information regarding
* the AVS patent policy is available from the AVS Web site at
* http://www.avs.org.cn
*
* THIS IS NOT A GRANT OF PATENT RIGHTS - SEE THE AVS PATENT POLICY.
************************************************************************
*/
/*-------------------------------------------------------------*
* procedure init_lag_wind: *
* ~~~~~~~~~~~~~~ *
* Compute the lag window (for windowing the autocorrelations *
* in LP analysis). *
*-------------------------------------------------------------*/
#include "../include/amr_plus.h"
/*-------------------------------------------------------------*
* procedure lag_wind: *
* ~~~~~~~~~ *
* lag windowing of the autocorrelations *
*-------------------------------------------------------------*/
void lag_wind(
float r[], /* in/out: autocorrelations */
int m /* input : order of LP filter */
)
{
int i;
for (i = 0; i <= m; i++) {
r[i] *= lag_window[i];
}
return;
}