Main header for the HRIR/HRTF processing module (SAF_HRIR_MODULE) More...

#include "../saf_utilities/saf_utility_complex.h"

Functions
void	estimateITDs (float hrirs, int N_dirs, int hrir_len, int fs, float itds_s)
	Estimates the interaural time-differences (ITDs) for each HRIR based on the cross-correlation between the left and right channels, which are first low-pass filtered at 750Hz.

void	HRIRs2HRTFs_afSTFT (float hrirs, int N_dirs, int hrir_len, int hopsize, int LDmode, int hybridmode, float_complex hrtf_fb)
	Passes zero padded HRIRs through the afSTFT filterbank.

void	HRIRs2HRTFs_qmf (float hrirs, int N_dirs, int hrir_len, int hopsize, int hybridmode, float_complex hrtf_fb)
	Passes zero padded HRIRs through the qmf filterbank.

void	HRIRs2HRTFs (float hrirs, int N_dirs, int hrir_len, int fftSize, float_complex hrtfs)
	Converts HRIRs to HRTFs for a given FFT size.

void	diffuseFieldEqualiseHRTFs (int N_dirs, float itds_s, float centreFreq, int N_bands, float weights, int applyEQ, int applyPhase, float_complex hrtfs)
	Applies pre-processing to a set of HRTFs, which can either be diffuse-field EQ of an (optionally weighted) average of all HRTFs (CTF), phase simplification based on ITDs, or both.

void	interpHRTFs (float_complex hrtfs, float itds, float freqVector, float interp_table, int N_hrtf_dirs, int N_bands, int N_interp_dirs, float_complex *hrtf_interp)
	Interpolates a set of HRTFs based on a specified interpolation table.

void	binauralDiffuseCoherence (float_complex hrtfs, float itds, float freqVector, int N_hrtf_dirs, int N_bands, float HRTFcoh)
	Computes the binaural diffuse coherence per frequency for a given HRTF set, as described in [1].

void	resampleHRIRs (float hrirs_in, int hrirs_N_dirs, int hrirs_in_len, int hrirs_in_fs, int hrirs_out_fs, int padToNextPow2, float hrirs_out, int hrirs_out_len)
	Resamples a set of HRIRs from its original samplerate to a new samplerate.

Variables
const float	__default_hrirs [836][2][256]
	The default HRIR data for SAF.

const float	__default_hrir_dirs_deg [836][2]
	The measurement directions used for the default HRIR dataset.

const int	__default_N_hrir_dirs
	The number of directions/measurements in the default HRIR dataset.

const int	__default_hrir_len
	The length of the filters, in samples, for the default HRIR dataset.

const int	__default_hrir_fs
	The samplerate used to measure the default HRIR filters.

Detailed Description

Main header for the HRIR/HRTF processing module (SAF_HRIR_MODULE)

A collection functions for processing head-related impulse-response (HRIR). Including: estimation of the interaural time differences (ITDs), conversion of HRIRs to HRTFs or filterbank coefficients; diffuse-field equalisation and phase simplication; and HRTF interpolation.

Author: Leo McCormack

Date: 12.12.2016

License: ISC

Definition in file saf_hrir.h.

Functions

Variables

Detailed Description