Delta and Acceleration coefficients

Collaboration diagram for Delta and Acceleration coefficients:

Functions
void	delta (EST_Track &tr, EST_Track &d, int regression_length=3)
void	sigpr_delta (EST_Wave &sig, EST_Track &fv, EST_Features &op, const EST_StrList &slist)
void	sigpr_acc (EST_Wave &sig, EST_Track &fv, EST_Features &op, const EST_StrList &slist)

Detailed Description

Produce delta and acceleration coefficients from a set of coefficients or the waveform.

Function Documentation

void delta	(	EST_Track &	tr,
		EST_Track &	d,
		int	regression_length = 3
	)

Produce a set of delta coefficients for a track

The delta function is used to produce a set of coefficients which estimate the rate of change of a set of parameters. The output track d must be setup before hand, i.e. it must have the same number of frames and channels as tr.

Parameters

tr	input track of base coefficients
d	output track of delta coefficients.
regression_length	number of previous frames on which delta estimation is calculated on.

Definition at line 52 of file delta.cc.

void sigpr_delta	(	EST_Wave &	sig,
		EST_Track &	fv,
		EST_Features &	op,
		const EST_StrList &	slist
	)

Produce multiple sets of delta coefficients from a waveform.

Calculate specified types of delta coefficients. This function is used when the base types of coefficients haven't been calculated. This function calls sig2coef to calculate the base types from which the deltas are calculated, and hence the requirements governing the setup of fv for sig2coef also hold here.

Parameters

sig	input waveform
fv	output coefficients. These have been pre-allocated and the number of channels in a indicates the order of the analysis.
op	Features structure containing options for analysis order, frame shift etc.
slist	list of types of delta coefficients required.

Definition at line 309 of file sigpr_utt.cc.

void sigpr_acc	(	EST_Wave &	sig,
		EST_Track &	fv,
		EST_Features &	op,
		const EST_StrList &	slist
	)

Produce multiple sets of acceleration coefficients from a waveform

Calculate specified types of acceleration coefficients. This function is used when the base types of coefficient haven't been calculated. This function calls sig2coef to calculate the base types from which the deltas are calculated, and hence the requirements governing the setup of fv for sig2coef also hold here.

Parameters

sig	input waveform
fv	output coefficients. These have been pre-allocated and the number of channels in a indicates the order of the analysis.
op	Features structure containing options for analysis order, frame shift etc.
slist	list of types of acceleration coefficients required.

The delta function is used to produce a set of coefficients which estimate the rate of change of a set of parameters.

Definition at line 302 of file sigpr_utt.cc.