implements subsample delay in spectral domain. More...

Public Member Functions
	subsample_delay_t (const std::vector< float > &subsample_delay, unsigned fftlen)
	Constructor computes complex phase factors to apply to achieve subsample delay. More...

void	process (mha_spec_t *s)
	Apply the phase_gains to s to achieve the subsample delay. More...

void	process (mha_spec_t *s, unsigned idx)
	Apply the pase gains to channel idx in s to achieve the subsample delay in channel idx. More...

Public Attributes
spectrum_t	phase_gains
	The complex factors to apply to achieve the necessary phase shift. More...

Private Attributes
unsigned	last_complex_bin
	index of the last complex fft bin for the used fft length. More...

Detailed Description

implements subsample delay in spectral domain.

When transformed back to the time domain, the signal is delayed by the configured fraction of a sample. This operation must not be used in a smoothgains bracket.

Constructor & Destructor Documentation

◆ subsample_delay_t()

MHASignal::subsample_delay_t::subsample_delay_t	(	const std::vector< float > &	subsample_delay,
		unsigned	fftlen
	)

Constructor computes complex phase factors to apply to achieve subsample delay.

Parameters

subsample_delay	The subsample delay to apply. -0.5 <= subsample_delay <= 0.5
fftlen	FFT length

Exceptions

MHA_Error if the parameters are out of range

Member Function Documentation

◆ process() [1/2]

void MHASignal::subsample_delay_t::process ( mha_spec_t * s )

Apply the phase_gains to s to achieve the subsample delay.

◆ process() [2/2]

void MHASignal::subsample_delay_t::process	(	mha_spec_t *	s,
		unsigned	idx
	)

Apply the pase gains to channel idx in s to achieve the subsample delay in channel idx.

Parameters

s	signal
idx	channel index, 0-based

Exceptions

MHA_Error if idx >= s->num_channels

Member Data Documentation

◆ phase_gains

spectrum_t MHASignal::subsample_delay_t::phase_gains

The complex factors to apply to achieve the necessary phase shift.

◆ last_complex_bin

unsigned MHASignal::subsample_delay_t::last_complex_bin

private

index of the last complex fft bin for the used fft length.

The documentation for this class was generated from the following files:

Public Member Functions

Public Attributes

Private Attributes