binauraliser_nf_internal.c File Reference

Convolves input audio (up to 64 channels) with interpolated HRTFs in the time-frequency domain, and applies optional near-field binaural filtering, as described in [1]. More...

#include "binauraliser_nf_internal.h"

Go to the source code of this file.

Functions
void	binauraliserNF_initTFT (void *const hBin)
	Initialise the filterbank used by binauraliserNF.
void	binauraliserNF_resetSourceDistances (void *const hBin)
	Resets the source distances to the default far field distance.

Detailed Description

Convolves input audio (up to 64 channels) with interpolated HRTFs in the time-frequency domain, and applies optional near-field binaural filtering, as described in [1].

The HRTFs are interpolated by applying amplitude-preserving VBAP gains to the HRTF magnitude responses and inter-aural time differences (ITDs) individually, before being re-combined. The example also allows the user to specify an external SOFA file for the convolution, and rotations of the source directions to accomodate head-tracking.

See also

[1] S. Spagnol, E. Tavazzi, and F. Avanzini, “Distance rendering and perception of nearby virtual sound sources with a near-field filter model,” Applied Acoustics, vol. 115, pp. 61–73, Jan. 2017, doi: 10.1016/j.apacoust.2016.08.015.

Author

Michael McCrea, Leo McCormack

Date

22.02.2022

License

ISC

Definition in file binauraliser_nf_internal.c.

Function Documentation

binauraliserNF_initTFT()

void binauraliserNF_initTFT

(

void *const

hBin

)

Initialise the filterbank used by binauraliserNF.

Note

Call this function before binauraliser_initHRTFsAndGainTables()

Definition at line 41 of file binauraliser_nf_internal.c.

binauraliserNF_resetSourceDistances()

void binauraliserNF_resetSourceDistances

(

void *const

hBin

)

Resets the source distances to the default far field distance.

Definition at line 57 of file binauraliser_nf_internal.c.