Pre/Post Emphasis filters.

These functions adjust the spectral tilt of the input waveform. More...

Collaboration diagram for Pre/Post Emphasis filters.:

Functions
void	pre_emphasis (EST_Wave &sig, float a=DEFAULT_PRE_EMPH_FACTOR)
void	pre_emphasis (EST_Wave &sig, EST_Wave &out, float a=DEFAULT_PRE_EMPH_FACTOR)
void	post_emphasis (EST_Wave &sig, float a=DEFAULT_PRE_EMPH_FACTOR)
void	post_emphasis (EST_Wave &sig, EST_Wave &out, float a=DEFAULT_PRE_EMPH_FACTOR)

Detailed Description

These functions adjust the spectral tilt of the input waveform.

Function Documentation

void pre_emphasis	(	EST_Wave &	sig,
		float	a = DEFAULT_PRE_EMPH_FACTOR
	)

Pre-emphasis filtering. This performs simple high pass filtering with a one tap filter of value a. Normal values of a range between 0.95 and 0.99.

Definition at line 256 of file filter.cc.

void pre_emphasis	(	EST_Wave &	sig,
		EST_Wave &	out,
		float	a = DEFAULT_PRE_EMPH_FACTOR
	)

Pre-emphasis filtering. This performs simple high pass filtering with a one tap filter of value a. Normal values of a range between 0.95 and 0.99.

Definition at line 271 of file filter.cc.

void post_emphasis	(	EST_Wave &	sig,
		float	a = DEFAULT_PRE_EMPH_FACTOR
	)

Post-emphasis filtering. This performs simple low pass filtering with a one tap filter of value a. Normal values of a range between 0.95 and 0.99. The same values of a should be used when pre- and post-emphasizing the same signal.

Definition at line 242 of file filter.cc.

void post_emphasis	(	EST_Wave &	sig,
		EST_Wave &	out,
		float	a = DEFAULT_PRE_EMPH_FACTOR
	)

Post-emphasis filtering. This performs simple low pass filtering with a one tap filter of value a. Normal values of a range between 0.95 and 0.99. The same values of a should be used when pre- and post-emphasizing the same signal.

Definition at line 284 of file filter.cc.