Gammatone Filterbank Analyzer Plugin. More...

Classes
struct	gtfb_analyzer::gtfb_analyzer_cfg_t
	Configuration for Gammatone Filterbank Analyzer. More...

class	gtfb_analyzer::gtfb_analyzer_t
	Gammatone Filterbank Analyzer Plugin. More...

Functions
static const mha_complex_t &	filter_complex (const mha_complex_t &input, const mha_complex_t &coeff, mha_complex_t *states, unsigned orders)
	Filters a complex input sample with the given filter coefficient. More...

static const mha_complex_t &	filter_real (mha_real_t input, mha_complex_t &tmp_complex, const mha_complex_t &coeff, mha_complex_t *states, unsigned orders, const mha_complex_t &normphase)
	Filters a real input sample with the given filter coefficient and applies the given normalization with phase correction. More...

Detailed Description

Gammatone Filterbank Analyzer Plugin.

Function Documentation

static const mha_complex_t& filter_complex	(	const mha_complex_t &	input,
		const mha_complex_t &	coeff,
		mha_complex_t *	states,
		unsigned	orders
	)

inlinestatic

Filters a complex input sample with the given filter coefficient.

No normalization takes place. The implementation is tail-recursive and to exploit compiler optimization.

Parameters

input	The complex input sample
coeff	The complex filter coefficient
states	Pointer to the array of complex filter states.
orders	The filter order

static const mha_complex_t& filter_real	(	mha_real_t	input,
		mha_complex_t &	tmp_complex,
		const mha_complex_t &	coeff,
		mha_complex_t *	states,
		unsigned	orders,
		const mha_complex_t &	normphase
	)

inlinestatic

Filters a real input sample with the given filter coefficient and applies the given normalization with phase correction.

Parameters

input	The real input sample
tmp_complex	A reference to a mha_complex_t used for intermediate results. No assumptions should be made about the state of tmp_complex after the return of filter_real. This is an optimization to reduce the number of dtor/ctor calls of mha_complex_t
coeff	The complex filter coefficient
states	Pointer to the array of complex filter states.
orders	The filter order
normphase	Normalization coefficient including the phase correction