Three-dimensional virtual audio display employing reduced comple

Details Three-dimensional virtual audio display employing reduced comple Three-dimensional virtual audio display employing reduced comple

1994-09-09

1997-08-19

Kuntz, Curtis

Electrical audio signal processing systems and devices

Binaural and stereophonic

Pseudo stereophonic

381 1, H04R 500

Patent

active

056596197

ABSTRACT:
A three-dimensional virtual audio display method is described which includes generating a set of transfer function parameters in response to a spatial location or direction signal. An audio signal is filtered in response to the set of transfer function parameters. The set of transfer function parameters are selected from or interpolatated among parameters derived by smoothing frequency components of a known transfer function over a bandwidth which is a non-constant function of frequency. The smoothing includes for each frequency component in at least part of the audio band of the display, applying a mean function to the amplitude of the frequency components within the bandwidth containing the frequency component, and noting the parameters of the resulting compressed transfer function.

REFERENCES:
patent: 5404406 (1995-04-01), Fuchigami et al.
Rabiner, Lawrennce and Biing-Hwang Juang, Fundamentals of Speech Recognition, pp. 183-186 1993.

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