System and method for processing multi-channel audio

• US 7,561,932 B1
• Filed: 08/19/2003
• Issued: 07/14/2009
• Est. Priority Date: 08/19/2003
• Status: Active Grant

• Current Assignee: NVIDIA Corporation
• Original Assignee: NVIDIA Corporation
• Inventors: Pereira, Mark A., Holmes, Stephen G., Stroud, Micah S.
• Primary Examiner(s): Kuntz; Curtis
• Assistant Examiner(s): Saunders, Jr.; Joseph
• Application Number:
  US10/642,678
• Time in Patent Office: 2,156 Days
• Field of Search: 381/18, 381/19, 381/20, 381/21, 381/80, 381/81, 381/82, 381/85, 381/306, 381/307, 381/310
• US Class Current: 700/94
• CPC Class Codes: G06F 3/165 Management of the audio stream, e.g. setting of volume, audio stream path
• CPC Class Codes: H04R 5/04 Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments combinations of amplifiers H03F3/68; stereophonic systems H04S

Abstract

A user can assign different audio data streams to different output channels of a single audio card using substantially conventional APIs, device drivers, and Audio Codec Interfaces (ACIs). An Application Processing Unit (APU) sequences audio data streams in accordance with a user'"'"'s output channel assignment.

Claims

1. A method for using a single sound card to output audio data from a plurality of entertainment sources that include a media player and game software, comprising:

presenting a plurality of virtual devices to a user with each virtual device corresponding to a selection of a set of speakers from a group of speakers in different locations including speakers located in at least two different rooms, the presenting including displaying a list of the plurality of virtual devices on a graphical user interface;

receiving a first selection from the user associating a media player application with at least one of the plurality of virtual devices such that the first selection determines a first speaker assignment for the media player application;

receiving a second selection from the user associating a game software application with at least one of the plurality of virtual devices such that the second selection determines a second speaker assignment for the game software application; and

using a plurality of virtual device drivers to write audio data streams for the media player application and the game software application into a system memory accessible by the single sound card and to program the single sound card to associate audio data streams of the media player application and the game software application with output audio channels based on the user'"'"'s selections of virtual devices; and

the single sound card operative to simultaneously output audio according to the first speaker assignment and the second speaker assignment with the single sound card performing any mixing required to output audio from the media player application and the game software application on one or more shared speakers.

2. The method of claim 1, wherein the different rooms includes different rooms in a house.

3. The method of claim 1, wherein the different locations of the group of speakers includes different positions within one room.

4. A method for using a single sound card to output audio data from a plurality of entertainment sources that include a video player and game software, comprising:

presenting a plurality of virtual devices to a user with each virtual device corresponding to a selection of a set of speakers from a group of speakers in different locations including speakers located in at least two different rooms, the presenting including displaying a list of the plurality of virtual devices on a graphical user interface;

receiving a first selection from the user associating a video player application with at least one of the plurality of virtual devices such that the first selection determines a first speaker assignment for the video player application;

receiving a second selection from the user associating a game software application with at least one of the plurality of virtual devices such that the second selection determines a second speaker assignment for the game software application; and

using a plurality of virtual device drivers to write audio data streams for the video player application and the game software application into a system memory accessible by the single sound card and to program the single sound card to associate audio data streams of the video player application and the game software application with output audio channels based on the user'"'"'s selections of virtual devices; and

the single sound card operative to simultaneously output audio according to the first speaker assignment and the second speaker assignment with the single sound card performing any mixing required to output audio from the video player application and the game software application on one or more shared speakers.

5. The method of claim 4, wherein the at least two different rooms includes different rooms in a house.

6. The method of claim 4, wherein the different locations of the group of speakers includes different positions within one room of a house.

7. A method for using a single sound card to output audio data from a plurality of entertainment sources that include a media player and a video player, comprising:

presenting a plurality of virtual devices to a user with each virtual device corresponding to a selection of a set of speakers from a group of speakers in different locations including speakers located in at least two different rooms, the presenting including displaying a list of the plurality of virtual devices on a graphical user interface;

receiving a first selection from the user associating a media player application with at least one of the plurality of virtual devices such that the first selection determines a first speaker assignment for the media player application;

receiving a second selection from the user associating a video player application with at least one of the plurality of virtual devices such that the second selection determines a second speaker assignment for the video player application; and

using a plurality of virtual device drivers to write audio data streams for the media application and the video player application into a system memory accessible by the single sound card and to program the single sound card to associate audio data streams of the media player application and the video player application with output audio channels based on the user'"'"'s selections of virtual devices; and

the single sound card operative to simultaneously output audio according to the first speaker assignment and the second speaker assignment with the single sound card performing any mixing required to output audio from the media player application and the video player application on one or more shared speakers.

8. The method of claim 7, wherein the at least two different rooms includes different rooms in a house.

9. The method of claim 7, wherein the different locations of the group of speakers includes different positions within one room.