Title of Invention	METHOD TO PROCESS A SET OF INPUT AUDIO SIGNALS
Abstract	A method of processing a series of input audio signals representing a series of virtual audio sound sources placed at predetermined positions around a listener to produce a reduced set of audio output signals for playback over speaker devices placed around a listener, the method comprising the steps of: a) for each of the input audio signals and for each of the audio output signals; i) convolving the input audio signals with an initial head portion of a corresponding impulse response mapping substantially the initial sound and early reflections for an impulse response response of a corresponding virtual audio source to a corresponding speaker device so as to form a series of initial responses; b) for each of the input audio signals and for each of the audio output signals: i) forming a combined mix from the audio input signals; and ii) forming a combined convolution tail from the tails of the corresponding impulse responses; iii) convolving the combined mix with the combined convolution tail to form a combined tail response; c) for each of the output signals: i) combining a corresponding series of initial responses and a corresponding combined tail response to form the audio output signal.

Title of Invention

METHOD TO PROCESS A SET OF INPUT AUDIO SIGNALS

Abstract

A method of processing a series of input audio signals representing a series of virtual audio sound sources placed at predetermined positions around a listener to produce a reduced set of audio output signals for playback over speaker devices placed around a listener, the method comprising the steps of: a) for each of the input audio signals and for each of the audio output signals; i) convolving the input audio signals with an initial head portion of a corresponding impulse response mapping substantially the initial sound and early reflections for an impulse response response of a corresponding virtual audio source to a corresponding speaker device so as to form a series of initial responses; b) for each of the input audio signals and for each of the audio output signals: i) forming a combined mix from the audio input signals; and ii) forming a combined convolution tail from the tails of the corresponding impulse responses; iii) convolving the combined mix with the combined convolution tail to form a combined tail response; c) for each of the output signals: i) combining a corresponding series of initial responses and a corresponding combined tail response to form the audio output signal.

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http://ipindiaonline.gov.in/patentsearch/GrantedSearch/viewdoc.aspx?id=5smstOcXdjWE65Z+SF8Mww==&loc=vsnutRQWHdTHa1EUofPtPQ==

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Patent Number

270158

Indian Patent Application Number

247/MUMNP/2004

PG Journal Number

49/2015

Publication Date

04-Dec-2015

Grant Date

30-Nov-2015

Date of Filing

23-Apr-2004

Name of Patentee

DOLBY LABORATORIES LICENSING CORPORATION

Applicant Address

100,POTRERO AVENUE SANS FRANCISICO CALIFORNIA 94103-4813 UNITED STATES OF AMERICA.

Inventors:

#	Inventor's Name	Inventor's Address
1	ADAM RICHARD MCKEAG	69 STUART STREET, BLAKEHURST, NSW, 2221.
2	RICHARD JAMES CARTWRIGHT	6 ORINOCO STREET, PYMBLE, NSW, 2073.
3	ANDREW PETER REILLY	36 ACTON STREET, HURLSTONE PARK, NSW, 2193.
4	DAVID STANLEY MCGRATH	58 IMPERIAL AVENUE, BONDI, NSW, 2026.
5	GLENN NORMAN DICKENS	71/28 TORRENS STREET, BRADDON, ACT, 2162.

PCT International Classification Number

H03H17/06H04S5/00

PCT International Application Number

PCT/AU99/00002

PCT International Filing date

1999-01-06

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	PP2709	1998-03-31	Australia
2	PP2595	1998-03-25	Australia
3	PP7164	1998-11-12	Australia
4	PP2710	1998-03-31	Australia