Telecommunication terminal able to modify the voice transmitted during a telephone call

• US 20030215085A1
• Filed: 05/15/2003
• Published: 11/20/2003
• Est. Priority Date: 05/16/2002
• Status: Active Grant

• Current Assignee: DRNC Holdings, Inc. (InterDigital, Inc.)
• Original Assignee: Alcatel SA (Nokia Corporation)
• Inventors: Bonnard, Pierre, Fourquin, Xavier, Bourmeyster, Ivan, Ladouce, Pierre
• Granted Patent: US 7,796,748 B2
• Time in Patent Office: Days
• US Class Current: 379/387.02
• CPC Class Codes: G10L 19/00 Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis in musical instruments G10H
• CPC Class Codes: G10L 2021/0135 Voice conversion or morphing
• CPC Class Codes: H04M 1/72448 with means for adapting the functionality of the device according to specific conditions

Abstract

A telecommunication terminal receives an analog speech signal from a user of the terminal and converts the analog speech signal into a digital signal. A vocoder applies source coding to the speech signal and extracts reconstruction parameters from the speech signal. The reconstruction parameters are modified so that the transmitted voice associated with the signal is modified.

Claims

1. A telecommunication terminal including means for input of an analog speech signal by a user of said terminal, means for converting said analog speech signal into a digital signal, a vocoder for applying source coding to said speech signal and including means for extracting reconstruction parameters from said speech signal, and means for modifying said reconstruction parameters so that the transmitted voice associated with said signal is modified.

2. The terminal claimed in claim 1 wherein said means for modifying said reconstruction parameters include means for modifying a parameter representative of the fundamental frequency of the voice.

3. The terminal claimed in claim 1 wherein said source coding of said speech signal is RPE-LTP coding.

4. The terminal claimed in claim 2 wherein said source coding of said speech signal is RPE-LTP coding.

5. The terminal claimed in claim 1 wherein said means for modifying said reconstruction parameters include means for modifying the short-term filter parameters of said vocoder.

6. The terminal claimed in claim 2 wherein said means for modifying said reconstruction parameters include means for modifying the short-term filter parameters of said vocoder.

7. The terminal claimed in claim 3 wherein said means for modifying said reconstruction parameters include means for modifying the short-term filter parameters of said vocoder.

8. The terminal claimed in claim 4 wherein said means for modifying said reconstruction parameters include means for modifying the short-term filter parameters of said vocoder.

9. The terminal claimed in claim 1 wherein said means for modifying said reconstruction parameters include means for modifying the parameters associated with excitation magnitudes.

10. The terminal claimed in claim 2 wherein said means for modifying said reconstruction parameters include means for modifying the parameters associated with excitation magnitudes.

11. The terminal claimed in claim 3 wherein said means for modifying said reconstruction parameters include means for modifying the parameters associated with excitation magnitudes.

12. The terminal claimed in claim 4 wherein said means for modifying said reconstruction parameters include means for modifying the parameters associated with excitation magnitudes.

13. The terminal claimed in claim 5 wherein said means for modifying said reconstruction parameters include means for modifying the parameters associated with excitation magnitudes.

14. The terminal claimed in claim 6 wherein said means for modifying said reconstruction parameters include means for modifying the parameters associated with excitation magnitudes.

15. The terminal claimed in claim 7 wherein said means for modifying said reconstruction parameters include means for modifying the parameters associated with excitation magnitudes.

16. The terminal claimed in claim 8 wherein said means for modifying said reconstruction parameters include means for modifying the parameters associated with excitation magnitudes.

17. The terminal claimed in claim 1 wherein said means for modifying said reconstruction parameters include means for modifying the long-term filter parameters of said vocoder.

18. The terminal claimed in claim 2 wherein said means for modifying said reconstruction parameters include means for modifying the long-term filter parameters of said vocoder.

19. The terminal claimed in claim 3 wherein said means for modifying said reconstruction parameters include means for modifying the long-term filter parameters of said vocoder.

20. The terminal claimed in claim 5 wherein said means for modifying said reconstruction parameters include means for modifying the long-term filter parameters of said vocoder.

21. The terminal claimed in claim 9 wherein said means for modifying said reconstruction parameters include means for modifying the long-term filter parameters of said vocoder.

22. The terminal claimed in claim 1 wherein said means for modifying said reconstruction parameters include means for modifying said parameters as a function of coded data representative of a set of notes defined by their frequencies and their respective durations.

23. The terminal claimed in claim 2 wherein said means for modifying said reconstruction parameters include means for modifying said parameters as a function of coded data representative of a set of notes defined by their frequencies and their respective durations.

24. The terminal claimed in claim 3 wherein said means for modifying said reconstruction parameters include means for modifying said parameters as a function of coded data representative of a set of notes defined by their frequencies and their respective durations.

25. The terminal claimed in claim 5 wherein said means for modifying said reconstruction parameters include means for modifying said parameters as a function of coded data representative of a set of notes defined by their frequencies and their respective durations.

26. The terminal claimed in claim 9 wherein said means for modifying said reconstruction parameters include means for modifying said parameters as a function of coded data representative of a set of notes defined by their frequencies and their respective durations.

27. The terminal claimed in claim 17 wherein said means for modifying said reconstruction parameters include means for modifying said parameters as a function of coded data representative of a set of notes defined by their frequencies and their respective durations.

28. The terminal claimed in claim 1 including means for selecting a type of modification of the voice to be transmitted.

29. The terminal claimed in claim 2 including means for selecting a type of modification of the voice to be transmitted.

30. The terminal claimed in claim 3 including means for selecting a type of modification of the voice to be transmitted.

31. The terminal claimed in claim 5 including means for selecting a type of modification of the voice to be transmitted.

32. The terminal claimed in claim 9 including means for selecting a type of modification of the voice to be transmitted.

33. The terminal claimed in claim 17 including means for selecting a type of modification of the voice to be transmitted.

34. The terminal claimed in claim 22 including means for selecting a type of modification of the voice to be transmitted.

35. The terminal claimed in claim 1 including means for manually configuring the modifications of said reconstruction parameters of the speech signal.

36. The terminal claimed in claim 2 including means for manually configuring the modifications of said reconstruction parameters of the speech signal.

37. The terminal claimed in claim 3 including means for manually configuring the modifications of said reconstruction parameters of the speech signal.

38. The terminal claimed in claim 5 including means for manually configuring the modifications of said reconstruction parameters of the speech signal.

39. The terminal claimed in claim 22 including means for manually configuring the modifications of said reconstruction parameters of the speech signal.

40. The terminal claimed in claim 1 including means for executing said modifications in a test mode.

41. The terminal claimed in claim 2 including means for executing said modifications in a test mode.

42. The terminal claimed in claim 3 including means for executing said modifications in a test mode.

43. The terminal claimed in claim 5 including means for executing said modifications in a test mode.

44. The terminal claimed in claim 35 including means for executing said modifications in a test mode.

45. The terminal claimed in claim 1 wherein said terminal is a mobile telephone.