Contains variables for sofa file loading, HRTF interpolation, and the loudspeaker decoders. More...

#include <ambi_dec_internal.h>

Data Fields
float *	M_dec [NUM_DECODERS][MAX_SH_ORDER]
	ambisonic decoding matrices ([0] for low-freq, [1] for high-freq); FLAT: nLoudspeakers x nSH

float_complex *	M_dec_cmplx [NUM_DECODERS][MAX_SH_ORDER]
	complex ambisonic decoding matrices ([0] for low-freq, [1] for high-freq); FLAT: nLoudspeakers x nSH

float *	M_dec_maxrE [NUM_DECODERS][MAX_SH_ORDER]
	ambisonic decoding matrices with maxrE weighting ([0] for low-freq, [1] for high-freq); FLAT: nLoudspeakers x nSH

float_complex *	M_dec_cmplx_maxrE [NUM_DECODERS][MAX_SH_ORDER]
	complex ambisonic decoding matrices with maxrE weighting ([0] for low-freq, [1] for high-freq); FLAT: nLoudspeakers x nSH

float	M_norm [NUM_DECODERS][MAX_SH_ORDER][2]
	norm coefficients to preserve omni energy/amplitude between different orders and decoders

char *	sofa_filepath
	absolute/relevative file path for a sofa file

float *	hrirs
	time domain HRIRs; N_hrir_dirs x 2 x hrir_len

float *	hrir_dirs_deg
	directions of the HRIRs in degrees [azi elev]; N_hrir_dirs x 2

int	N_hrir_dirs
	number of HRIR directions in the current sofa file

int	hrir_len
	length of the HRIRs, this can be truncated, see "saf_sofa_reader.h"

int	hrir_fs
	sampling rate of the HRIRs, should ideally match the host sampling rate, although not required

int	hrtf_vbapTableRes [2]
	[azi elev] step sizes in degrees

int	N_hrtf_vbap_gtable
	number of interpolation directions

int	hrtf_nTriangles
	number of triangle groups after triangulation

int *	hrtf_vbap_gtableIdx
	N_hrtf_vbap_gtable x 3.

float *	hrtf_vbap_gtableComp
	N_hrtf_vbap_gtable x 3.

float *	itds_s
	interaural-time differences for each HRIR (in seconds); N_hrirs x 1

float_complex *	hrtf_fb
	HRTF filterbank coefficients; nBands x nCH x N_hrirs.

float *	hrtf_fb_mag
	magnitudes of the HRTF filterbank coefficients; nBands x nCH x N_hrirs

float_complex	hrtf_interp [MAX_NUM_LOUDSPEAKERS][HYBRID_BANDS][NUM_EARS]
	interpolated HRTFs

float *	weights
	grid integration weights of hrirs; N_hrirs x 1

Detailed Description

Contains variables for sofa file loading, HRTF interpolation, and the loudspeaker decoders.

Definition at line 88 of file ambi_dec_internal.h.

Field Documentation

◆ hrir_dirs_deg

float* ambi_dec_codecPars::hrir_dirs_deg

directions of the HRIRs in degrees [azi elev]; N_hrir_dirs x 2

Definition at line 100 of file ambi_dec_internal.h.

◆ hrir_fs

int ambi_dec_codecPars::hrir_fs

sampling rate of the HRIRs, should ideally match the host sampling rate, although not required

Definition at line 103 of file ambi_dec_internal.h.

◆ hrir_len

int ambi_dec_codecPars::hrir_len

length of the HRIRs, this can be truncated, see "saf_sofa_reader.h"

Definition at line 102 of file ambi_dec_internal.h.

◆ hrirs

float* ambi_dec_codecPars::hrirs

time domain HRIRs; N_hrir_dirs x 2 x hrir_len

Definition at line 99 of file ambi_dec_internal.h.

◆ hrtf_fb

float_complex* ambi_dec_codecPars::hrtf_fb

HRTF filterbank coefficients; nBands x nCH x N_hrirs.

Definition at line 114 of file ambi_dec_internal.h.

◆ hrtf_fb_mag

float* ambi_dec_codecPars::hrtf_fb_mag

magnitudes of the HRTF filterbank coefficients; nBands x nCH x N_hrirs

Definition at line 115 of file ambi_dec_internal.h.

◆ hrtf_interp

float_complex ambi_dec_codecPars::hrtf_interp[MAX_NUM_LOUDSPEAKERS][HYBRID_BANDS][NUM_EARS]

interpolated HRTFs

Definition at line 116 of file ambi_dec_internal.h.

◆ hrtf_nTriangles

int ambi_dec_codecPars::hrtf_nTriangles

number of triangle groups after triangulation

Definition at line 108 of file ambi_dec_internal.h.

◆ hrtf_vbap_gtableComp

float* ambi_dec_codecPars::hrtf_vbap_gtableComp

N_hrtf_vbap_gtable x 3.

Definition at line 110 of file ambi_dec_internal.h.

◆ hrtf_vbap_gtableIdx

int* ambi_dec_codecPars::hrtf_vbap_gtableIdx

N_hrtf_vbap_gtable x 3.

Definition at line 109 of file ambi_dec_internal.h.

◆ hrtf_vbapTableRes

int ambi_dec_codecPars::hrtf_vbapTableRes[2]

[azi elev] step sizes in degrees

Definition at line 106 of file ambi_dec_internal.h.

◆ itds_s

float* ambi_dec_codecPars::itds_s

interaural-time differences for each HRIR (in seconds); N_hrirs x 1

Definition at line 113 of file ambi_dec_internal.h.

◆ M_dec

float* ambi_dec_codecPars::M_dec[NUM_DECODERS][MAX_SH_ORDER]

ambisonic decoding matrices ([0] for low-freq, [1] for high-freq); FLAT: nLoudspeakers x nSH

Definition at line 91 of file ambi_dec_internal.h.

◆ M_dec_cmplx

float_complex* ambi_dec_codecPars::M_dec_cmplx[NUM_DECODERS][MAX_SH_ORDER]

complex ambisonic decoding matrices ([0] for low-freq, [1] for high-freq); FLAT: nLoudspeakers x nSH

Definition at line 92 of file ambi_dec_internal.h.

◆ M_dec_cmplx_maxrE

float_complex* ambi_dec_codecPars::M_dec_cmplx_maxrE[NUM_DECODERS][MAX_SH_ORDER]

complex ambisonic decoding matrices with maxrE weighting ([0] for low-freq, [1] for high-freq); FLAT: nLoudspeakers x nSH

Definition at line 94 of file ambi_dec_internal.h.

◆ M_dec_maxrE

float* ambi_dec_codecPars::M_dec_maxrE[NUM_DECODERS][MAX_SH_ORDER]

ambisonic decoding matrices with maxrE weighting ([0] for low-freq, [1] for high-freq); FLAT: nLoudspeakers x nSH

Definition at line 93 of file ambi_dec_internal.h.

◆ M_norm

float ambi_dec_codecPars::M_norm[NUM_DECODERS][MAX_SH_ORDER][2]

norm coefficients to preserve omni energy/amplitude between different orders and decoders

Definition at line 95 of file ambi_dec_internal.h.

◆ N_hrir_dirs

int ambi_dec_codecPars::N_hrir_dirs

number of HRIR directions in the current sofa file

Definition at line 101 of file ambi_dec_internal.h.

◆ N_hrtf_vbap_gtable

int ambi_dec_codecPars::N_hrtf_vbap_gtable

number of interpolation directions

Definition at line 107 of file ambi_dec_internal.h.

◆ sofa_filepath

char* ambi_dec_codecPars::sofa_filepath

absolute/relevative file path for a sofa file

Definition at line 98 of file ambi_dec_internal.h.

◆ weights

float* ambi_dec_codecPars::weights

grid integration weights of hrirs; N_hrirs x 1

Definition at line 119 of file ambi_dec_internal.h.

The documentation for this struct was generated from the following file:

examples/src/ambi_dec/ambi_dec_internal.h

Data Fields