METHODS AND APPARATUS FOR PROVIDING AN INTERFACE TO A PROCESSING ENGINE THAT UTILIZES INTELLIGENT AUDIO MIXING TECHNIQUES

• US 20090136063A1
• Filed: 11/28/2007
• Published: 05/28/2009
• Est. Priority Date: 11/28/2007
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Gupta, Samir Kumar, Choy, Eddie L. T., Kulkarni, Prajakt V., Xiang, Pei
• Granted Patent: US 8,515,106 B2
• Time in Patent Office: Days
• US Class Current: 381/119
• CPC Class Codes: H04R 2499/11 Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
• CPC Class Codes: H04S 2400/11 Positioning of individual sound objects, e.g. moving airplane, within a sound field H04S2420/13 takes precedence
• CPC Class Codes: H04S 7/30 Control circuits for electronic adaptation of the sound field
• CPC Class Codes: H04S 7/302 Electronic adaptation of stereophonic sound system to listener position or orientation H04S7/301 takes precedence

Abstract

A method for providing an interface to a processing engine that utilizes intelligent audio mixing techniques may include receiving a request to change a perceptual location of an audio source within an audio mixture from a current perceptual location relative to a listener to a new perceptual location relative to the listener. The audio mixture may include at least two audio sources. The method may also include generating one or more control signals that are configured to cause the processing engine to change the perceptual location of the audio source from the current perceptual location to the new perceptual location via separate foreground processing and background processing. The method may also include providing the one or more control signals to the processing engine.

Claims

1. A method for providing an interface to a processing engine that utilizes intelligent audio mixing techniques, comprising:

triggering by an event a request to change a perceptual location of an audio source within an audio mixture from a current perceptual location relative to a listener to a new perceptual location relative to the listener, wherein the audio mixture comprises at least two audio sources;

generating one or more control signals that are configured to cause the processing engine to change the perceptual location of the audio source from the current perceptual location to the new perceptual location via separate foreground processing and background processing; and

providing the one or more control signals to the processing engine.

2. The method of claim 1, wherein separate foreground processing and background processing comprises:

splitting an input audio source into a foreground signal and a background signal; and

processing the foreground signal differently than the background signal.

3. The method of claim 2, wherein the background processing comprises processing the background signal to sound more diffuse than the foreground signal.

4. The method of claim 1, wherein the one or more control signals cause the processing engine to gradually change the perceptual location of the audio source from the current perceptual location to the new perceptual location.

5. The method of claim 1, further comprising determining new values for parameters of the processing engine, wherein the new values correspond to the new perceptual location, and wherein the one or more control signals comprise commands for setting the parameters to the new values.

6. The method of claim 1, wherein changing from the current perceptual location to the new perceptual location comprises a transition within a foreground region relative to the listener, and further comprising determining new values for parameters of a foreground angle control component of the processing engine.

7. The method of claim 1, wherein changing from the current perceptual location to the new perceptual location comprises a transition within a background region relative to the listener, and further comprising determining new values for parameters of a background angle control component of the processing engine.

8. The method of claim 1, wherein changing from the current perceptual location to the new perceptual location comprises a transition from a background region relative to the listener to a foreground region relative to the listener, and further comprising determining new values for parameters of a foreground angle control component of the processing engine, a foreground attenuation component of the processing engine, and a background attenuation component of the processing engine.

9. The method of claim 1, wherein changing from the current perceptual location to the new perceptual location comprises a transition from a foreground region relative to the listener to a background region relative to the listener, and further comprising determining new values for parameters of a background angle control component of the processing engine, a background attenuation component of the processing engine, and a foreground attenuation component of the processing engine.

10. An apparatus for providing an interface to a processing engine that utilizes intelligent audio mixing techniques, comprising:

a processor;

memory in electronic communication with the processor;

instructions stored in the memory, the instructions being executable to;

trigger by an event a request to change a perceptual location of an audio source within an audio mixture from a current perceptual location relative to a listener to a new perceptual location relative to the listener, wherein the audio mixture comprises at least two audio sources;

generate one or more control signals that are configured to cause the processing engine to change the perceptual location of the audio source from the current perceptual location to the new perceptual location via separate foreground processing and background processing; and

provide the one or more control signals to the processing engine.

11. The apparatus of claim 10, wherein separate foreground processing and background processing comprises:

splitting an input audio source into a foreground signal and a background signal; and

processing the foreground signal differently than the background signal.

12. The apparatus of claim 11, wherein the background processing comprises processing the background signal to sound more diffuse than the foreground signal.

13. The apparatus of claim 10, wherein the one or more control signals cause the processing engine to gradually change the perceptual location of the audio source from the current perceptual location to the new perceptual location.

14. The apparatus of claim 10, wherein the instructions are also executable to determine new values for parameters of the processing engine, wherein the new values correspond to the new perceptual location, and wherein the one or more control signals comprise commands for setting the parameters to the new values.

15. The apparatus of claim 10, wherein changing from the current perceptual location to the new perceptual location comprises a transition within a foreground region relative to the listener, and wherein the instructions are also executable to determine new values for parameters of a foreground angle control component of the processing engine.

16. The apparatus of claim 10, wherein changing from the current perceptual location to the new perceptual location comprises a transition within a background region relative to the listener, and wherein the instructions are also executable to determine new values for parameters of a background angle control component of the processing engine.

17. The apparatus of claim 10, wherein changing from the current perceptual location to the new perceptual location comprises a transition from a background region relative to the listener to a foreground region relative to the listener, and wherein the instructions are also executable to determine new values for parameters of a foreground angle control component of the processing engine, a foreground attenuation component of the processing engine, and a background attenuation component of the processing engine.

18. The apparatus of claim 10, wherein changing from the current perceptual location to the new perceptual location comprises a transition from a foreground region relative to the listener to a background region relative to the listener, and wherein the instructions are also executable to determine new values for parameters of a background angle control component of the processing engine, a background attenuation component of the processing engine, and a foreground attenuation component of the processing engine.

19. A computer-readable medium comprising instructions providing an interface to a processing engine that utilizes audio mixing techniques on a mobile device, which when executed by a processor causes the processor to

trigger by an event a request to change a perceptual location of an audio source within an audio mixture from a current perceptual location relative to a listener to a new perceptual location relative to the listener, wherein the audio mixture comprises at least two audio sources;

generate one or more control signals that are configured to cause the processing engine to change the perceptual location of the audio source from the current perceptual location to the new perceptual location via separate foreground processing and background processing; and

provide the one or more control signals to the processing engine.

20. The computer-readable medium of claim 19, wherein separate foreground processing and background processing comprises:

splitting an input audio source into a foreground signal and a background signal; and

processing the foreground signal differently than the background signal.

21. The computer-readable medium of claim 20, wherein the background processing comprises processing the background signal to sound more diffuse than the foreground signal.

22. The computer-readable medium of claim 19, wherein the one or more control signals cause the processing engine to gradually change the perceptual location of the audio source from the current perceptual location to the new perceptual location.

23. The computer-readable medium of claim 19, wherein the instructions also cause the processor to determine new values for parameters of the processing engine, wherein the new values correspond to the new perceptual location, and wherein the one or more control signals comprise commands for setting the parameters to the new values.

24. The computer-readable medium of claim 19, wherein changing from the current perceptual location to the new perceptual location comprises a transition within a foreground region relative to the listener, and wherein the instructions also cause the processor to determine new values for parameters of a foreground angle control component of the processing engine.

25. The computer-readable medium of claim 19, wherein changing from the current perceptual location to the new perceptual location comprises a transition within a background region relative to the listener, and wherein the instructions also cause the processor to determine new values for parameters of a background angle control component of the processing engine.

26. The computer-readable medium of claim 19, wherein changing from the current perceptual location to the new perceptual location comprises a transition from a background region relative to the listener to a foreground region relative to the listener, and wherein the instructions also cause the processor to determine new values for parameters of a foreground angle control component of the processing engine, a foreground attenuation component of the processing engine, and a background attenuation component of the processing engine.

27. The computer-readable medium of claim 19, wherein changing from the current perceptual location to the new perceptual location comprises a transition from a foreground region relative to the listener to a background region relative to the listener, and wherein the instructions also cause the processor to determine new values for parameters of a background angle control component of the processing engine, a background attenuation component of the processing engine, and a foreground attenuation component of the processing engine.

28. An apparatus for providing an interface to a processing engine that utilizes intelligent audio mixing techniques, comprising:

means for triggering by an event a request to change a perceptual location of an audio source within an audio mixture from a current perceptual location relative to a listener to a new perceptual location relative to the listener, wherein the audio mixture comprises at least two audio sources;

means for generating one or more control signals that are configured to cause the processing engine to change the perceptual location of the audio source from the current perceptual location to the new perceptual location via separate foreground processing and background processing; and

means for providing the one or more control signals to the processing engine.

29. The apparatus of claim 28, wherein separate foreground processing and background processing comprises:

splitting an input audio source into a foreground signal and a background signal; and

processing the foreground signal differently than the background signal.

30. The apparatus of claim 29, wherein the background processing comprises processing the background signal to sound more diffuse than the foreground signal.

31. The apparatus of claim 28, wherein the one or more control signals cause the processing engine to gradually change the perceptual location of the audio source from the current perceptual location to the new perceptual location.

32. The apparatus of claim 28, further comprising determining new values for parameters of the processing engine, wherein the new values correspond to the new perceptual location, and wherein the one or more control signals comprise commands for setting the parameters to the new values.

33. The apparatus of claim 28, wherein changing from the current perceptual location to the new perceptual location comprises a transition within a foreground region relative to the listener, and further comprising means for determining new values for parameters of a foreground angle control component of the processing engine.

34. The apparatus of claim 28, wherein changing from the current perceptual location to the new perceptual location comprises a transition within a background region relative to the listener, and further comprising means for determining new values for parameters of a background angle control component of the processing engine.

35. The apparatus of claim 28, wherein changing from the current perceptual location to the new perceptual location comprises a transition from a background region relative to the listener to a foreground region relative to the listener, and further comprising means for determining new values for parameters of a foreground angle control component of the processing engine, a foreground attenuation component of the processing engine, and a background attenuation component of the processing engine.

36. The apparatus of claim 28, wherein changing from the current perceptual location to the new perceptual location comprises a transition from a foreground region relative to the listener to a background region relative to the listener, and further comprising means for determining new values for parameters of a background angle control component of the processing engine, a background attenuation component of the processing engine, and a foreground attenuation component of the processing engine.