Method and apparatus for automatic adjustment of play speed of audio data

• US 20070250311A1
• Filed: 04/25/2006
• Published: 10/25/2007
• Est. Priority Date: 04/25/2006
• Status: Abandoned Application

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Shires, Glen
• Application Number:
  US11/411,074
• Publication Number:
  US 20070250311A1
• Time in Patent Office: Days
• US Class Current: 704/226
• CPC Class Codes: G10L 21/04 Time compression or expansion

Abstract

A method for managing audio data includes identifying a condition in the audio data. A rate of playback of the audio data is automatically adjusted in response to identifying the condition. Other embodiments are disclosed.

Claims

1. A method for managing audio data, comprising:

identifying a condition in the audio data; and

automatically adjusting a rate of playback of the audio data in response to identifying the condition.

2. The method of claim 1, wherein the condition is a rate of speech.

3. The method of claim 1, wherein the condition is noise.

4. The method of claim 1, wherein the condition is a filled pause.

5. The method of claim 1, wherein identifying the condition, comprises:

converting the audio data from a time domain to a frequency domain;

extracting features of the audio data in the frequency domain; and

analyzing the features of the audio data.

6. The method of claim 1, wherein identifying the condition, comprises:

converting the audio data from a time domain to a frequency domain;

extracting features of the audio data in the frequency domain; and

comparing the features of the audio data with a model.

7. The method of claim 5, wherein the features comprises sub-band energies.

8. The method of claim 5, wherein the features comprises phoneme characteristics.

9. The method of claim 1, further comprising:

identifying a second condition in the audio data; and

automatically adjusting the rate of playback of the audio data in response to identifying the first and second conditions.

10. The method of claim 1, wherein adjusting the rate of playback of the audio data comprises performing selective sampling.

11. The method of claim 1, wherein adjusting the rate of playback of the audio data comprises performing synchronized overlap-add.

12. The method of claim 1, wherein adjusting the rate of playback of the audio data comprises performing harmonic scaling.

13. An article of manufacture comprising a machine accessible medium including sequences of instructions, the sequences of instructions including instructions which when executed cause the machine to perform:

identifying a condition in audio data; and

automatically adjusting a rate of playback of the audio data in response to identifying the condition.

14. The article of manufacture of claim 13, wherein identifying the condition, comprises:

converting the audio data from a time domain to a frequency domain;

extracting features of the audio data in the frequency domain; and

analyzing the features of the audio data.

15. The article of manufacture of claim 13, further comprising instructions which when executed cause the machine to perform:

identifying a second condition in the audio data; and

automatically adjusting the rate of playback of the audio data in response to identifying the first and second conditions.

16. The article of manufacture of claim 13, wherein the condition is a rate of speech.

17. A play-speed adjustment unit, comprising:

a rate of change integrator unit to identify a change of rate of speech in audio data; and

an audio data processing unit to adjust a rate of playback of the audio data in response to the change of the rate of speech.

18. The play-speed adjustment unit of claim 17, further comprising a comparator unit to identify a condition in the audio data, wherein the audio data processing unit adjusts the rate of playback in response to the change of the rate of speech and the condition.

19. The play-speed adjustment unit of claim 17, wherein the condition is background noise.

20. The play-speed adjustment unit of claim 17, further comprising a feature extractor unit to identify features in the audio data.