Method for Determining an Audio Data Spatial Encoding Mode

• US 20080319764A1
• Filed: 12/13/2006
• Published: 12/25/2008
• Est. Priority Date: 12/27/2005
• Status: Active Grant

• Current Assignee: Orange S.A.
• Original Assignee: Orange S.A.
• Inventors: Briand, Manuel, Nagle, Arnault, Sollaud, Aurelien
• Granted Patent: US 8,600,530 B2
• Time in Patent Office: Days
• US Class Current: 704/500
• CPC Class Codes: G10L 19/008 Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• CPC Class Codes: H04L 67/303 Terminal profiles
• CPC Class Codes: H04L 69/24 Negotiation of communication capabilities

Abstract

A method of determining a spatial coding mode for audio data sent by a sender entity (20) to a receiver terminal (10) adapted to receive said audio data in one or more sound reproduction formats. The method comprises the steps of the receiver terminal (10) indicating (1) to the sender entity (20) said reproduction format(s) in a given order of preference and the sender entity (20) determining a mode of spatial coding of the audio data compatible with a reproduction format taken in the order of preference and indicating (2) said reproduction format to the receiver terminal (10). Application to Voice over IP services.

Claims

1. A method of determining a spatial coding mode for audio data sent by a sender entity (20) to a receiver terminal (10) adapted to receive said audio data in one or more reproduction formats, wherein said method comprises the steps of:

the receiver terminal (10) indicating (1) said reproduction format(s) to the sender entity (20) in a given order of preference; and

the sender entity (20) determining a mode for spatial coding of the audio data compatible with a reproduction format taken in the given order of preference and indicating (2) said reproduction format to the receiver terminal (10).

2. The method according to claim 1, wherein said sender entity is a bridge in a centralized multipoint connection.

3. The method according to claim 1, wherein said sender entity is a terminal in a point-to-point or distributed multipoint connection.

4. The method according to claim 1, wherein the receiver terminal indicates said reproduction format(s) and said order of preference in a message sent to the sender entity and said sender entity indicates the reproduction format to be used in a response message sent to the receiver terminal.

5. The method according to claim 3, wherein the receiver terminal indicates said reproduction format(s) and said order of preference in a message sent to the sender entity and said sender entity indicates the reproduction format to be used in a response message sent to the receiver terminal, and wherein the sender entity also indicates one or more reproduction formats in a given order of preference in said response message and said receiver terminal indicates the reproduction format to be used in a response message sent to the sender entity.

6. The method according to claim 4, wherein said messages are signaling messages.

7. The method according to claim 6, wherein said signaling messages are SIP signaling messages.

8. A receiver terminal adapted to receive in one or more sound reproduction formats spatial audio data sent by a sender entity, wherein said receiver terminal is adapted to supply said reproduction format(s) to a sender entity in a given order of preference and said sender entity is adapted to determine a spatial coding mode compatible with a reproduction format taken in the order of preference.

9. A sender entity adapted to send spatial audio data to a receiver terminal adapted to receive said spatial audio data in one or more sound reproduction formats in a given order of preference, wherein said sender entity is adapted to determine a spatial coding mode compatible with a reproduction format taken in the order of preference and to indicate said reproduction format to the receiver terminal.

10. A message from a receiver terminal adapted to receive in one or more sound reproduction formats spatial audio data sent by a sender entity, wherein said message includes an indication of said reproduction format(s) in a given order of preference, said sender entity being adapted to determine a spatial coding mode compatible with a reproduction format taken in the order of preference.

11. The response message from the sender entity to the message according to claim 10, wherein said response message indicates the reproduction format to be used by the receiver terminal.

12. The response message according to claim 11, wherein said response message also indicates one or more reproduction formats for the sender entity in a given order of preference.