mha_filter.hh File Reference

Header file for IIR filter classes. More...

Classes
class	MHAFilter::filter_t
	Generic IIR filter class. More...
class	MHAFilter::diff_t
	Differentiator class (non-normalized) More...
class	MHAFilter::o1_ar_filter_t
	First order attack-release lowpass filter. More...
class	MHAFilter::o1flt_lowpass_t
	First order low pass filter. More...
class	MHAFilter::o1flt_maxtrack_t
	First order maximum tracker. More...
class	MHAFilter::o1flt_mintrack_t
	First order minimum tracker. More...
class	MHAFilter::iir_filter_state_t
class	MHAFilter::iir_filter_t
	IIR filter class wrapper for integration into parser structure. More...
class	MHAFilter::adapt_filter_state_t
class	MHAFilter::adapt_filter_param_t
class	MHAFilter::adapt_filter_t
	Adaptive filter. More...
class	MHAFilter::fftfilter_t
	FFT based FIR filter implementation. More...
class	MHAFilter::fftfilterbank_t
	FFT based FIR filterbank implementation. More...
struct	MHAFilter::transfer_function_t
	a structure containing a source channel number, a target channel number, and an impulse response. More...
struct	MHAFilter::transfer_matrix_t
	A sparse matrix of transfer function partitionss. More...
class	MHAFilter::partitioned_convolution_t
	A filter class for partitioned convolution. More...
struct	MHAFilter::partitioned_convolution_t::index_t
	Bookkeeping class. More...
class	MHAFilter::smoothspec_t
	Smooth spectral gains, create a windowed impulse response. More...
class	MHAFilter::resampling_filter_t
	Hann shaped low pass filter for resampling. More...
class	MHAFilter::polyphase_resampling_t
	A class that performs polyphase resampling. More...
class	MHAFilter::blockprocessing_polyphase_resampling_t
	A class that does polyphase resampling and takes into account block processing. More...
class	MHAFilter::iir_ord1_real_t
	First order recursive filter. More...

Namespaces
	MHAFilter
	Namespace for IIR and FIR filter classes.

Functions
template<typename T , typename std::enable_if< std::is_floating_point< T >::value, T >::type * = nullptr>
void	MHAFilter::make_friendly_number (T &x)
void	MHAFilter::o1_lp_coeffs (const mha_real_t tau, const mha_real_t fs, mha_real_t &c1, mha_real_t &c2)
	Set first order filter coefficients from time constant and sampling rate. More...
void	MHAFilter::butter_stop_ord1 (double *A, double *B, double f1, double f2, double fs)
	Setup a first order butterworth band stop filter. More...
std::vector< float >	MHAFilter::fir_lp (float f_pass_, float f_stop_, float fs_, unsigned order_)
	Setup a nth order fir low pass filter. More...
MHASignal::waveform_t *	MHAFilter::spec2fir (const mha_spec_t *spec, const unsigned int fftlen, const MHAWindow::base_t &window, const bool minphase)
	Create a windowed impulse response/FIR filter coefficients from a spectrum. More...
unsigned	MHAFilter::gcd (unsigned a, unsigned b)
	greatest common divisor More...
double	MHAFilter::sinc (double x)
	sin(x)/x function, coping with x=0. More...
std::pair< unsigned, unsigned >	MHAFilter::resampling_factors (float source_sampling_rate, float target_sampling_rate, float factor=1.0f)
	Computes rational resampling factor from two sampling rates. More...

Detailed Description

Header file for IIR filter classes.