LA P/939 A 20260403 20060101
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10 L 19 008 A 20060101
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10 L 19 26 A 20060101
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04 S 3 00 A 20060101
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04 S 3 02 A 20060101
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04 S 5 00 A LA P/939 20240129 US 60/549,368 20040301 Dolby Laboratories Licensing Corporation
1275 Market Street, San Francisco, California 94103-1410 United States of America US
US Mark Franklin DAVIS (US citizen)
Dolby Laboratories Licensing Corporation 100 Potrero Avenue San Francisco CA 94103-4813 United States of America US
LAO TRADEMARK AGENCY (LAO IP AGENCY)
LLC Bldg, Nongbone Road, P.O.BOX 925,Tel: +(856 21)264 866, 264 877; Fax: +(856 21) 264 344 LA
Multichannel Audio Coding Multichannel Audio Coding 20240129 20260403 Patent - Foreign

<p>Disciosed is a method for decoding M encoded audio channels represenfing N audio channels, where N is two or more, and a set of one or more spatial&nbsp;parameters, wherein one or more of said spatial parameters are differentially encoded. The method comprises: a) receiving said M encoded audio channels and said set of spatial pararneters, b) applying a differential decoding procoss to the one or more differentially,encoded spatial parameters, c) deriving N audio signals from said M encoded channels, wherein each audio signal is divided into a plurality of frequency bands, wherein each band comprises one ro&nbsp;more spectral components, and d) generating a multichannel output signals from the N audio signais and the spatial parameters. M is two or more,&nbsp;at least one of said N audio signals is a correlated signal derived from a weighted combination of at least two of said M encoded audio channels. Said set of spatial parameters inciudes a first parameter indicative of the amounl of an utcorrelatedsignai to mix with a correiated sigrral. Step d) inciudes deriving at least one uncorrelated&nbsp;signal from said at least one correlated signal, and controliing the proportion of said at least one correlated signal to said at least one uncorrelated signal&nbsp;in at least one charnel of said multichannel output signal in response to one or ones of said spatial parameters, wherein said controlling is at leasf partly in accordance with said first parameter.</p>

<p>Disciosed is a method for decoding M encoded audio channels represenfing N audio channels, where N is two or more, and a set of one or more spatial&nbsp;parameters, wherein one or more of said spatial parameters are differentially encoded. The method comprises: a) receiving said M encoded audio channels and said set of spatial pararneters, b) applying a differential decoding procoss to the one or more differentially,encoded spatial parameters, c) deriving N audio signals from said M encoded channels, wherein each audio signal is divided into a plurality of frequency bands, wherein each band comprises one ro&nbsp;more spectral components, and d) generating a multichannel output signals from the N audio signais and the spatial parameters. M is two or more,&nbsp;at least one of said N audio signals is a correlated signal derived from a weighted combination of at least two of said M encoded audio channels. Said set of spatial parameters inciudes a first parameter indicative of the amounl of an utcorrelatedsignai to mix with a correiated sigrral. Step d) inciudes deriving at least one uncorrelated&nbsp;signal from said at least one correlated signal, and controliing the proportion of said at least one correlated signal to said at least one uncorrelated signal&nbsp;in at least one charnel of said multichannel output signal in response to one or ones of said spatial parameters, wherein said controlling is at leasf partly in accordance with said first parameter.</p>