Head related transfer functions for panned stereo audio content

Details Head related transfer functions for panned stereo audio content Head related transfer functions for panned stereo audio content

2005-10-10

2009-12-15

Faulk, Devona E (Department: 2614)

Electrical audio signal processing systems and devices

Binaural and stereophonic

Pseudo stereophonic

C381S001000, C381S018000, C381S019000, C381S309000, C381S310000, C381S074000

Reexamination Certificate

active

07634093

ABSTRACT:
A method to process audio signals, an apparatus accepting audio signals, a carrier medium that carried instructions for a processor to implement the method to process audio signals, and a carrier medium carrying filter data to implement a filter of audio signals. The method includes filtering a pair of audio input signals by a process that produces a pair of output signals corresponding to the results of: filtering each of the input signals with a HRTF filter pair, and adding the HRTF filtered signals. The HRTF filter pair is such that a listener listening to the pair of output signals through headphones experiences sounds from a pair of desired virtual speaker locations. Furthermore, the filtering is such that, in the case that the pair of audio input signals includes a panned signal component, the listener listening to the pair of output signals through headphones is provided with the sensation that the panned signal component emanates from a virtual sound source at a center location between the virtual speaker locations.

REFERENCES:
patent: 2006/0045274 (2006-03-01), Aarts et al.
patent: 2006/0083394 (2006-04-01), McGrath

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