Method and apparatus to perform speech recognition over a data channel

• US 7,346,496 B2
• Filed: 01/08/2007
• Issued: 03/18/2008
• Est. Priority Date: 12/07/2001
• Status: Expired due to Fees

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Stanford, Michael
• Primary Examiner(s): Hudspeth; David
• Assistant Examiner(s): Sked; Matthew J.
• Application Number:
  US11/620,974
• Publication Number:
  US 20070174046A1
• Time in Patent Office: 435 Days
• Field of Search: None
• US Class Current: 704/201
• CPC Class Codes: G10L 15/08 Speech classification or search

Abstract

Various embodiments directed to performing speech recognition over a data channel are described. One or more embodiments may comprise encoding voice information to be communicated over a voice channel using a voice compression algorithm, switching from said voice channel to a data channel, encoding voice information to be communicated over said data channel using said voice compression algorithm used for said voice channel, and communicating encoded voice information over said data channel. Other embodiments are described and claimed.

Claims

1. A communications method, comprising:

encoding voice information to be communicated over a voice channel using a voice compression algorithm;

switching from said voice channel to a data channel;

encoding voice information to be communicated over said data channel using said voice compression algorithm used for said voice channel; and

communicating encoded voice information over said data channel.

2. The method of claim 1, wherein said data channel provides higher quality voice information than said voice channel.

3. The method of claim 1, further comprising:

receiving an analog audio waveform representing speech;

converting said analog audio waveform into a digital audio signal; and

encoding said digital audio signal using said voice compression algorithm.

4. The method of claim 3, further comprising transmitting said digital audio signal over said voice channel.

5. The method of claim 3, further comprising transmitting said digital audio signal over said data channel.

6. The method of claim 5, further comprising:

receiving a first signal from said speech recognition system to initiate sending said requested voice information over said-data channel; and

transmitting said digital audio signal over said data channel in accordance with said first signal.

7. The method of claim 6, further comprising:

receiving a second signal from said speech recognition system to terminate sending said requested voice information over said data channel; and

terminating transmission of said digital audio signal over said data channel in accordance with said second signal.

8. The method of claim 5, further comprising:

monitoring for a signal from a user to initiate sending said requested voice information over said data channel;

receiving said signal from said user; and

transmitting said digital audio signal over said data channel while said signal is received.

9. The method of claim 1, further comprising receiving a request for voice information.

10. The method of claim 9, wherein said request comprises a prompt for a voice command from a speech recognition system.

11. The method of claim 1, further comprising:

sending a request for voice information for a speech recognition system over said voice channel;

receiving requested voice information over said data channel; and

performing speech recognition of said requested voice information.

12. The method of claim 11, further comprising:

sending a first signal over said voice channel to initiate sending said requested voice information over said data channel; and

receiving said requested voice information over said data channel in accordance with said first signal.

13. The method of claim 12, further comprising sending a second signal over said voice channel to terminate sending said requested voice information over said data channel.

14. The method of claim 1, further comprising:

communicating encoded voice information in accordance with one or more Global System For Mobile Communications (GSM) standards.

15. The method of claim 1, further comprising:

communicating encoded voice information in accordance with one or more General Packet Radio System (GPRS) standards.

16. An apparatus, comprising:

a vocoder to encode speech using a voice compression algorithm;

a transceiver to communicate encoded speech over one of a voice channel and a data channel; and

a switching device to switch from said voice channel to said data channel,

said vocoder to encode speech to be communicated over said data channel using the voice compression algorithm used for said voice channel after switching from said voice channel to said data channel.

17. The apparatus of claim 16, said switching device comprising an input device to move between a first position and a second position.

18. The apparatus of claim 17, further comprising:

a position sensor to determine when said input device is in said first position and said second position; and

a position signal generating module to generate a signal indicating when said input device is in one of said first and second positions.

19. The apparatus of claim 17, said input device comprising a button.

20. The apparatus of claim 16, further comprising:

a microphone to receive analog speech signals; and

an analog-to-digital converter to convert said analog speech signals into digital speech signals.

21. The apparatus of claim 16, further comprising:

an automatic speech recognition (ASR) control module to control when said encoded speech is communicated over said voice channel and said data channel.

22. The apparatus of claim 21, further comprising:

an ASR input module to generate a signal from a user, said ASR control module to receive said signal and cause said encoded speech to be communicated over said data channel while said signal is received.

23. The apparatus of claim 16, said transceiver to communicate encoded voice information in accordance with one or more Global System For Mobile Communications (GSM) standards.

24. The apparatus of claim 16, said transceiver to communicate encoded voice information in accordance with one or more General Packet Radio System (GPRS) standards.

25. A wireless communication system, comprising:

a speech recognition system;

a base station in communication with said speech recognition system; and

a mobile station to communicate with said base station, said mobile station comprising;

a vocoder to encode speech using a voice compression algorithm;

a transceiver to communicate encoded speech over one of a voice channel and a data channel; and

a switching device to switch from said voice channel to said data channel,

said vocoder to encode speech to be communicated over said data channel using the voice compression algorithm used for said voice channel after switching from said voice channel to said data channel.

26. The system of claim 25, said switching device comprising an input device to move between a first position and a second position.

27. The system of claim 26, said mobile station further comprising:

a position sensor to determine when said input device is in said first position and said second position; and

a position signal generating module to generate a signal indicating when said input device is in one of said first and second positions.

28. The system of claim 26, said input device comprising a button.

29. The system of claim 25, said mobile station further comprising:

a microphone to receive analog speech signals; and

an analog-to-digital converter to convert said analog speech signals into digital speech signals.

30. The system of claim 25, further comprising:

an automatic speech recognition (ASR) control module to control when said encoded speech is communicated over said voice channel and said data channel.

31. The system of claim 30, further comprising:

an ASR input module to generate a signal from a user, said ASR control module to receive said signal and cause said encoded speech to be communicated over said data channel while said signal is received.

32. The system of claim 25, said transceiver to communicate encoded voice information in accordance with one or more Global System For Mobile Communications (GSM) standards.

33. The system of claim 25, said transceiver to communicate encoded voice information in accordance with one or more General Packet Radio System (GPRS) standards.