include/gau_cb_float64.h File Reference

#include <sphinx_config.h>
#include <cmd_ln.h>
#include <gau_cb.h>
#include <fe.h>

Go to the source code of this file.

Data Structures
struct	gau_den_float64_s
Typedefs
typedef struct gau_den_float64_s	gau_den_float64_t
	Type representing a single density for computation.
Functions
gau_cb_t *	gau_cb_float64_read (cmd_ln_t *config, const char *meanfn, const char *varfn, const char *normfn)
	Read a codebook of Gaussians from mean and variance files and precompute for linear float64 computation.
void	gau_cb_float64_free (gau_cb_t *gau)
	Free a codebook loaded with gau_cb_float64_read().
int	gau_cb_float64_compute_all (gau_cb_t *cb, int mgau, int feat, mfcc_t *obs, float64 *out_den, float64 worst)
	Compute all floating point densities for a single feature stream in an observation.
int	gau_cb_float64_compute (gau_cb_t *cb, int mgau, int feat, mfcc_t *obs, gau_den_float64_t *inout_den, int nden)
	Compute a subset of floating point densities for a single feature stream in an observation.
float32 ****	gau_cb_float64_get_means (gau_cb_t *cb)
	Retrieve the mean vectors from the codebook.
float32 ****	gau_cb_float64_get_invvars (gau_cb_t *cb)
	Retrieve the scaled inverse variance vectors from the codebook.
float32 ***	gau_cb_float64_get_norms (gau_cb_t *cb)
	Retrieve the normalization constants from the codebook.

---

Detailed Description

Author:

David Huggins-Daines <dhuggins@cs.cmu.edu>

Gaussian distribution parameters (linear floating-point computation)

Definition in file gau_cb_float64.h.

---

Function Documentation

int gau_cb_float64_compute	(	gau_cb_t *	cb,
		int	mgau,
		int	feat,
		mfcc_t *	obs,
		gau_den_float64_t *	inout_den,
		int	nden
	)

Compute a subset of floating point densities for a single feature stream in an observation.

Returns:

the offset in inout_den of the lowest density

int gau_cb_float64_compute_all	(	gau_cb_t *	cb,
		int	mgau,
		int	feat,
		mfcc_t *	obs,
		float64 *	out_den,
		float64	worst
	)

Compute all floating point densities for a single feature stream in an observation.

Returns:

the index of the highest density

gau_cb_t* gau_cb_float64_read	(	cmd_ln_t *	config,
		const char *	meanfn,
		const char *	varfn,
		const char *	normfn
	)

Read a codebook of Gaussians from mean and variance files and precompute for linear float64 computation.

Parameters:

config	Configuration parameters
meanfn	Filename for means
varfn	Filename for variances
normfn	(optional) Filename for normalization constants