46 #include <sphinxbase/ckd_alloc.h>
58 mllr = ckd_calloc(1,
sizeof(*mllr));
61 if ((fp = fopen(regmatfile,
"r")) == NULL) {
62 E_ERROR_SYSTEM(
"Failed to open MLLR file '%s' for reading", regmatfile);
66 E_INFO(
"Reading MLLR transformation file '%s'\n", regmatfile);
68 if ((fscanf(fp,
"%d", &n) != 1) || (n < 1)) {
69 E_ERROR(
"Failed to read number of MLLR classes\n");
74 if ((fscanf(fp,
"%d", &n) != 1)) {
75 E_ERROR(
"Failed to read number of feature streams\n");
81 mllr->
A = (float32 ****) ckd_calloc(mllr->
n_feat,
sizeof(float32 **));
82 mllr->
b = (float32 ***) ckd_calloc(mllr->
n_feat,
sizeof(float32 *));
83 mllr->
h = (float32 ***) ckd_calloc(mllr->
n_feat,
sizeof(float32 *));
85 for (i = 0; i < mllr->
n_feat; ++i) {
86 if (fscanf(fp,
"%d", &n) != 1) {
87 E_ERROR(
"Failed to read stream length for feature %d\n", i);
93 mllr->
veclen[i],
sizeof(float32));
101 for (m = 0; m < mllr->
n_class; ++m) {
102 for (j = 0; j < mllr->
veclen[i]; ++j) {
103 for (k = 0; k < mllr->
veclen[i]; ++k) {
104 if (fscanf(fp,
"%f ", &mllr->
A[i][m][j][k]) != 1) {
105 E_ERROR(
"Failed reading MLLR rotation (%d,%d,%d,%d)\n",
111 for (j = 0; j < mllr->
veclen[i]; ++j) {
112 if (fscanf(fp,
"%f ", &mllr->
b[i][m][j]) != 1) {
113 E_ERROR(
"Failed reading MLLR bias (%d,%d,%d)\n",
118 for (j = 0; j < mllr->
veclen[i]; ++j) {
119 if (fscanf(fp,
"%f ", &mllr->
h[i][m][j]) != 1) {
120 E_ERROR(
"Failed reading MLLR variance scale (%d,%d,%d)\n",
154 for (i = 0; i < mllr->
n_feat; ++i) {
156 ckd_free_3d(mllr->
A[i]);
158 ckd_free_2d(mllr->
b[i]);
160 ckd_free_2d(mllr->
h[i]);
POCKETSPHINX_EXPORT ps_mllr_t * ps_mllr_retain(ps_mllr_t *mllr)
Retain a pointer to a linear transform.
float32 *** h
Diagonal transformation of variances.
int * veclen
Length of input vectors for each stream.
float32 *** b
Bias part of mean transformations.
int n_class
Number of MLLR classes.
POCKETSPHINX_EXPORT ps_mllr_t * ps_mllr_read(char const *file)
Read a speaker-adaptive linear transform from a file.
int n_feat
Number of feature streams.
POCKETSPHINX_EXPORT int ps_mllr_free(ps_mllr_t *mllr)
Release a pointer to a linear transform.
Feature space linear transform structure.
float32 **** A
Rotation part of mean transformations.
int refcnt
Reference count.
Acoustic model structures for PocketSphinx.