US 8,045,718 B2 · Method for binaural synthesis taking into account a room effect

Abstract

The invention concerns a method for three-dimensional spatialization of audio channels from a filter BRIR incorporating a theater effect. For a specific number N of samples corresponding to the size of the pulse response of the BRIR filter, it consists in breaking down (A) the BRIR filter into at least a set of delay and amplitude values associated with the times of arrival of reflections; extracting (B) on the number of B samples at least one spectral module of the BRIR filter; and constituting (C) from each successive delay, its amplitude and its spectral module associated with an elementary BRIR filter (BRIRe) directly applied to the audio channels in the time, frequency or transformed domain. The invention is applicable to binaural or multichannel spatialization.

Claims11

Dependent claims

A method for 3D spatialization of audio channels, using at least one acoustic filter transfer function incorporating a room effect, the method comprising, for a specific number of samples corresponding to a size of a pulse response of the transfer function, the steps of:

decomposing the transfer function into at least one set of delay and amplitude values associated with amplitude peak values;
extracting from the number of samples at least one spectral modulus of the transfer function;
and
forming from each successive delay, from its associated amplitude and from its associated spectral modulus, an elementary transfer function directly applied to the audio channels in the time, frequency, or transformed domain.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

12/225,691Filed 8 Mar 2007

Priority

FR 06 0269428 Mar 2006

Published

US 2009/0103738 A123 Apr 2009

Granted

25 Oct 2011

Term ends

Not estimatedThe source records don’t support an estimate.

Classification4 codes

H04S 1/005
Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution: for headphones
H04S 3/004
Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution: for headphones
H04S 2400/01
Details of stereophonic systems covered by H04S but not provided for in its groups: multi-channel, i.e. more than two input channels, sound…
H04S
Stereophonic systems

Method for binaural synthesis taking into account a room effect

Life of this patent

Method for binaural synthesis taking into account a room effect

Life of this patent

Abstract

Claims11