US 9,883,314 B2Granted

Auxiliary augmentation of soundfields

AssigneeDolby Laboratories Licensing Corporation

InventorsDavid Gunawan, Glenn N. Dickins, Richard J. Cartwright

Life of this patent

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Abstract

A method for altering an audio signal of interest in a multi-channel soundfield representation of an audio environment, the method including the steps of: (a) extracting the signal of interest from the soundfield representation; (b) determining a residual soundfield signal; (c) inputting a further associated audio signal, which is associated with the signal of interest; (d) transforming the associated audio signal into a corresponding associated soundfield signal compatable with the residual soundfield; and (e) combining the residual soundfield signal with the associated soundfield signal to produce an output soundfield signal.

Claims9

Dependent claims

A method for altering a multi-channel soundfield representation of an audio environment, the multi-channel soundfield representation captured by a soundfield microphone, the method including the steps of:

(a) extracting a first audio component from the soundfield representation, the first audio component comprising audio activity incident from a range of angles in the multi-channel soundfield representation;
(b) determining a second audio component from the multi-channel soundfield representation, the second audio component corresponding to the multi-channel soundfield representation with the first component at least partly removed;
(c) inputting an auxiliary audio signal captured by an auxiliary microphone;
(d) mixing the auxiliary audio signal with the first audio component based on a comparison between an instantaneous signal to noise ratio, SNR, of the multi-channel soundfield representation and an instantaneous SNR of the auxiliary audio signal, and thereby forming a mixed audio component,
(e) combining the second audio component with the mixed audio component to produce an output soundfield signal.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/323,724Filed 1 Jul 2015 · us provisional application
Priority: 3 Jul 2014
Published: US 2017/0164133 A18 Jun 2017
Granted: 30 Jan 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

H04S 7/30
Indicating arrangements; Control arrangements, e.g. balance control: control circuits for electronic adaptation of the sound field
H04S 3/002
Systems employing more than two channels, e.g. quadraphonic: non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound…
H04R 2420/01
Details of connection covered by H04R, not provided for in its groups: input selection or mixing for amplifiers or loudspeakers
H04R 2430/25
Processing of the output signals of the acoustic transducers of an array for obtaining a desired directivity characteristic: array processing for…

Family

Application62/020,702Us provisional application · filed 3 Jul 2014
US 2017/0164133 A1Pre-grant publication · published 8 Jun 2017
US 9,883,314 B2This patent

From the US filing history. Foreign family members aren’t listed.

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