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Beamforming synthesis of binaural responses from computer simulations of acoustic spaces
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10.1121/1.2924206
/content/asa/journal/jasa/124/1/10.1121/1.2924206
http://aip.metastore.ingenta.com/content/asa/journal/jasa/124/1/10.1121/1.2924206

Figures

Image of FIG. 1.
FIG. 1.

Spherical coordinates and head orientation.

Image of FIG. 2.
FIG. 2.

Line array emulation of sphere, error in decibels for array elements, element spacing of , sphere radius , with 512 tap beam former filters.

Image of FIG. 3.
FIG. 3.

Line array emulation of sphere, error in decibels for array elements, element spacing of with quadratic variations for , sphere radius , 512 tap beam former filters.

Image of FIG. 4.
FIG. 4.

(a) Approximated theoretical sphere HRIR (-) and line array emulated HRIR (--) for azimuth of 90° (0° to right ear) using 75 array elements. (b) Transfer function magnitudes.

Image of FIG. 5.
FIG. 5.

(a) Approximated theoretical sphere HRIR (-) and line array emulated HRIR (--) for azimuth of 45° degrees (135° to right ear) using 75 array elements. (b) Transfer function magnitudes.

Image of FIG. 6.
FIG. 6.

Spiral spherical array with unit radius and 40 elements.

Image of FIG. 7.
FIG. 7.

CIPIC coordinates, elevation and azimuth .

Image of FIG. 8.
FIG. 8.

Error for 3D emulation of solid sphere HRTFs, with ears at azimuth, for , sphere radius , coordinates quantized to . HRIRs downsampled by 2.

Image of FIG. 9.
FIG. 9.

Error for 3D emulation of solid sphere HRTFs, with ears at , for sphere radius , and radius variations of 0 (solid), (dashed), (dash dot), and (dotted) without coordinate quantization, for , 2048 frequency samples and downsampled by 2.

Image of FIG. 10.
FIG. 10.

(a) Original (-) and emulated (--) HRIRs for a solid sphere at elevation 0 and azimuth using an array of 640 elements. (b) Transfer function magnitudes.

Image of FIG. 11.
FIG. 11.

(a) Original (-) and emulated (--) HRIRs for a solid sphere at elevation 0 and azimuth of using an array of 640 elements. (b) Transfer function magnitudes.

Image of FIG. 12.
FIG. 12.

Emulation errors for CIPIC subjects 3, 9, 27, 48, 51, 58, 153, 154, 155, and 163, with element array.

Image of FIG. 13.
FIG. 13.

Original (-) and emulated (--) HRIRs for CIPIC subject 3 at elevation 0 and azimuth of using an array of 640 elements. (b) Transfer function magnitudes.

Image of FIG. 14.
FIG. 14.

(a) Original (-) and emulated (--) HRIRs for CIPIC subject 3 at elevation 0 and azimuth of 40° using an array of 640 elements. (b) Transfer function magnitudes.

Image of FIG. 15.
FIG. 15.

CIPIC subject 3 polar response at and emulation using 640 element array.

Image of FIG. 16.
FIG. 16.

CIPIC subject 3 polar response at and emulation using 640 element array.

Image of FIG. 17.
FIG. 17.

CIPIC subject 3 polar response at and emulation using 640 element array.

Image of FIG. 18.
FIG. 18.

(a) Original (-) and emulated (--) HRIRs for CIPIC subject 58 at elevation 0 and azimuth of 40° using an array of 640 elements. (b) Transfer function magnitude.

Tables

Generic image for table
TABLE I.

Bessel function zeros for spherical array of radius .

Generic image for table
TABLE II.

Spherical array Nyquist frequencies for array radius .

Generic image for table
TABLE III.

Mean CIPIC subject rms deviation from nearest neighbor angles from .

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/content/asa/journal/jasa/124/1/10.1121/1.2924206
2008-07-01
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Beamforming synthesis of binaural responses from computer simulations of acoustic spaces
http://aip.metastore.ingenta.com/content/asa/journal/jasa/124/1/10.1121/1.2924206
10.1121/1.2924206
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