MHAOvlFilter::ShapeFun Namespace Reference

Shape functions for overlapping filters. More...

Functions
mha_real_t	rect (mha_real_t x)
	Filter shape function for rectangular filters. More...
mha_real_t	linear (mha_real_t x)
	Filter shape function for sawtooth filters. More...
mha_real_t	hann (mha_real_t x)
	Filter shape function for hanning shaped filters. More...
mha_real_t	expflt (mha_real_t)
mha_real_t	gauss (mha_real_t)

Detailed Description

Shape functions for overlapping filters.

Function Documentation

rect()

mha_real_t MHAOvlFilter::ShapeFun::rect

(

mha_real_t

x

)

Filter shape function for rectangular filters.

This function creates rectangular filter shapes. The edge is exactly half way between two center frequencies (on a given scale).

Parameters

x	Input value in the range [-1,1].

Returns

Weigth function in the range [0,1]

linear()

mha_real_t MHAOvlFilter::ShapeFun::linear

(

mha_real_t

x

)

Filter shape function for sawtooth filters.

This function creates sawtooth filter shapes. They rise linearly form 0 to 1 in the interval from the lower neighbor center frequency to the band center frequency and from 1 to 0 in the interval from the band center frequency to the upper neighbour band center frequency. Linear means linear on a given frequency scale.

Parameters

x	Input value in the range [-1,1].

Returns

Weigth function in the range [0,1]

hann()

mha_real_t MHAOvlFilter::ShapeFun::hann

(

mha_real_t

x

)

Filter shape function for hanning shaped filters.

This function creates hanning window shaped filters.

Parameters

x	Input value in the range [-1,1].

Returns

Weigth function in the range [0,1]

expflt()

mha_real_t MHAOvlFilter::ShapeFun::expflt

(

mha_real_t

x

)

gauss()

mha_real_t MHAOvlFilter::ShapeFun::gauss

(

mha_real_t

x

)