diff options
Diffstat (limited to 'media/sphinxbase/src/libsphinxbase/feat/cmn_prior.c')
| -rw-r--r-- | media/sphinxbase/src/libsphinxbase/feat/cmn_prior.c | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/media/sphinxbase/src/libsphinxbase/feat/cmn_prior.c b/media/sphinxbase/src/libsphinxbase/feat/cmn_prior.c deleted file mode 100644 index 9d1801aa7..000000000 --- a/media/sphinxbase/src/libsphinxbase/feat/cmn_prior.c +++ /dev/null @@ -1,184 +0,0 @@ -/* -*- c-basic-offset: 4; indent-tabs-mode: nil -*- */ -/* ==================================================================== - * Copyright (c) 1999-2004 Carnegie Mellon University. All rights - * reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * This work was supported in part by funding from the Defense Advanced - * Research Projects Agency and the National Science Foundation of the - * United States of America, and the CMU Sphinx Speech Consortium. - * - * THIS SOFTWARE IS PROVIDED BY CARNEGIE MELLON UNIVERSITY ``AS IS'' AND - * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, - * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY - * NOR ITS EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * ==================================================================== - * - */ -/************************************************* - * CMU ARPA Speech Project - * - * Copyright (c) 2000 Carnegie Mellon University. - * ALL RIGHTS RESERVED. - * ********************************************** - * - * 30-Dec-2000 Rita Singh (rsingh@cs.cmu.edu) at Carnegie Mellon University - * Created - */ - - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif - -#ifdef _MSC_VER -#pragma warning (disable: 4244) -#endif - -#include "sphinxbase/ckd_alloc.h" -#include "sphinxbase/err.h" -#include "sphinxbase/cmn.h" - -void -cmn_prior_set(cmn_t *cmn, mfcc_t const * vec) -{ - int32 i; - - E_INFO("cmn_prior_set: from < "); - for (i = 0; i < cmn->veclen; i++) - E_INFOCONT("%5.2f ", MFCC2FLOAT(cmn->cmn_mean[i])); - E_INFOCONT(">\n"); - - for (i = 0; i < cmn->veclen; i++) { - cmn->cmn_mean[i] = vec[i]; - cmn->sum[i] = vec[i] * CMN_WIN; - } - cmn->nframe = CMN_WIN; - - E_INFO("cmn_prior_set: to < "); - for (i = 0; i < cmn->veclen; i++) - E_INFOCONT("%5.2f ", MFCC2FLOAT(cmn->cmn_mean[i])); - E_INFOCONT(">\n"); -} - -void -cmn_prior_get(cmn_t *cmn, mfcc_t * vec) -{ - int32 i; - - for (i = 0; i < cmn->veclen; i++) - vec[i] = cmn->cmn_mean[i]; - -} - -static void -cmn_prior_shiftwin(cmn_t *cmn) -{ - mfcc_t sf; - int32 i; - - E_INFO("cmn_prior_update: from < "); - for (i = 0; i < cmn->veclen; i++) - E_INFOCONT("%5.2f ", MFCC2FLOAT(cmn->cmn_mean[i])); - E_INFOCONT(">\n"); - - sf = FLOAT2MFCC(1.0) / cmn->nframe; - for (i = 0; i < cmn->veclen; i++) - cmn->cmn_mean[i] = cmn->sum[i] / cmn->nframe; /* sum[i] * sf */ - - /* Make the accumulation decay exponentially */ - if (cmn->nframe >= CMN_WIN_HWM) { - sf = CMN_WIN * sf; - for (i = 0; i < cmn->veclen; i++) - cmn->sum[i] = MFCCMUL(cmn->sum[i], sf); - cmn->nframe = CMN_WIN; - } - - E_INFO("cmn_prior_update: to < "); - for (i = 0; i < cmn->veclen; i++) - E_INFOCONT("%5.2f ", MFCC2FLOAT(cmn->cmn_mean[i])); - E_INFOCONT(">\n"); -} - -void -cmn_prior_update(cmn_t *cmn) -{ - mfcc_t sf; - int32 i; - - if (cmn->nframe <= 0) - return; - - E_INFO("cmn_prior_update: from < "); - for (i = 0; i < cmn->veclen; i++) - E_INFOCONT("%5.2f ", MFCC2FLOAT(cmn->cmn_mean[i])); - E_INFOCONT(">\n"); - - /* Update mean buffer */ - sf = FLOAT2MFCC(1.0) / cmn->nframe; - for (i = 0; i < cmn->veclen; i++) - cmn->cmn_mean[i] = cmn->sum[i] / cmn->nframe; /* sum[i] * sf; */ - - /* Make the accumulation decay exponentially */ - if (cmn->nframe > CMN_WIN_HWM) { - sf = CMN_WIN * sf; - for (i = 0; i < cmn->veclen; i++) - cmn->sum[i] = MFCCMUL(cmn->sum[i], sf); - cmn->nframe = CMN_WIN; - } - - E_INFO("cmn_prior_update: to < "); - for (i = 0; i < cmn->veclen; i++) - E_INFOCONT("%5.2f ", MFCC2FLOAT(cmn->cmn_mean[i])); - E_INFOCONT(">\n"); -} - -void -cmn_prior(cmn_t *cmn, mfcc_t **incep, int32 varnorm, int32 nfr) -{ - int32 i, j; - - if (nfr <= 0) - return; - - if (varnorm) - E_FATAL - ("Variance normalization not implemented in live mode decode\n"); - - for (i = 0; i < nfr; i++) { - - /* Skip zero energy frames */ - if (incep[i][0] < 0) - continue; - - for (j = 0; j < cmn->veclen; j++) { - cmn->sum[j] += incep[i][j]; - incep[i][j] -= cmn->cmn_mean[j]; - } - - ++cmn->nframe; - } - - /* Shift buffer down if we have more than CMN_WIN_HWM frames */ - if (cmn->nframe > CMN_WIN_HWM) - cmn_prior_shiftwin(cmn); -} |