Adaptive communication between a vehicle telematics unit and a call center based on acoustic conditions

• US 8,386,125 B2
• Filed: 11/22/2006
• Issued: 02/26/2013
• Est. Priority Date: 11/22/2006
• Status: Active Grant

• Current Assignee: General Motors LLC (General Motors Company)
• Original Assignee: General Motors LLC (General Motors Company)
• Inventors: Ross, Steven J., Johnson, Richard A., Chrumka, Edward P.
• Primary Examiner(s): Tarcza, Thomas
• Assistant Examiner(s): PIPALA, EDWARD J
• Application Number:
  US11/562,807
• Publication Number:
  US 20080119980A1
• Time in Patent Office: 2,288 Days
• Field of Search: 701/1, 701/29, 701/30, 701/33, 701/34, 701/35, 701/36, 701/29.1, 701/29.2, 701/29.6, 701/45, 701/49, 701/70, 701/93, 455/403, 455/404.1, 455/418, 455/445, 455/63.1, 455/73, 455/74, 455/74.1, 455/550.1, 455/552.1, 455/556.1, 455/556.2, 455/557, 455/563, 455/569.1, 455/569.2, 455/570, 455/414.1
• US Class Current: 701/36
• CPC Class Codes: G10L 15/01 Assessment or evaluation of speech recognition systems
• CPC Class Codes: G10L 15/20 Speech recognition techniques specially adapted for robustness in adverse environments, e.g. in noise, of stress induced speech G10L21/02 takes precedence

Abstract

A method of adaptively communicating between a telematics unit of a vehicle and a call center based on acoustic conditions. A communication session is initiated between a telematics unit and a call center and vehicle sensors are monitored for acoustics-related parameters. The acoustics-related parameters are analyzed, and it is determined if one or more of the acoustics-related parameters are indicative of an unacceptably noisy condition. The communication session is established as a live communication session between the telematics unit and a live advisor at the call center, if one or more of the acoustics-related parameters are indicative of an unacceptably noisy condition.

Claims

1. A method of adaptively communicating between a telematics unit of a vehicle and a call center based on acoustic conditions, comprising the steps of:

(a) initiating a communication session between a telematics unit and a call center;

(b) monitoring vehicle sensors for acoustics-related parameters;

(c) analyzing the acoustics-related parameters;

(d) determining if one or more of the acoustics-related parameters are indicative of an unacceptably noisy condition; and

(e) establishing the communication session as a live communication session between the telematics unit and the call center, if the step (d) determination is affirmative.

2. The method of claim 1, further comprising the step of (f) establishing the communication session as an automated communication session between the telematics unit and the call center, if the step (d) determination is negative.

3. The method of claim 1, further comprising the step of (g) carrying out one or more iterations of steps (b)-(d) during a previously established automated communication session and converting the automated communication session to a live communication session at any time that the step (d) determination is affirmative.

4. The method of claim 1, further comprising the step of (g) carrying out one or more iterations of steps (b)-(d) during a previously established automated communication session and maintaining the communication session as an automated communication session if the step (d) determination is affirmative.

5. The method of claim 1, wherein the acoustic-related parameters of the monitoring step (b) include at least one of vehicle speed, engine speed, fan speed, windshield wiper state, windshield wiper speed, seatbelt connection state, door opening/closed state, radio volume, window state, sun roof state, window relative opening, sun roof relative opening, or microphone signal-to-noise ratio.

6. The method of claim 1, wherein the analyzing step (c) includes comparing values of the acoustics-related parameters to threshold values.

7. The method of claim 6, further comprising the step of periodically updating one or more of the threshold values.

8. The method of claim 7, wherein the updating step further comprises the step of determining a recognition accuracy during one or more automated communication sessions and updating at least one threshold value in response to the determined recognition accuracy.

9. The method of claim 6, wherein it is determined in step (d) that one or more of the acoustics-related parameters are indicative of an unacceptably noisy condition, if one or more of the values of the acoustic-related parameters exceeds one or more of the threshold values.

10. A method of adaptively communicating between a telematics unit of a vehicle and a call center based on acoustic conditions, comprising the steps of:

(a) initiating a communication session between a telematics unit and a call center;

(b) monitoring vehicle sensors for acoustics-related parameters, which include at least one of vehicle speed, engine speed, fan speed, windshield wiper state, windshield wiper speed, seatbelt connection state, door opening/closed state, radio volume, window state, sun roof state, window relative opening, sun roof relative opening, or microphone signal-to-noise ratio;

(c) analyzing the acoustics-related parameters by comparing values of the acoustics-related parameters to threshold values;

(d) determining if one or more of the acoustics-related parameters are indicative of an unacceptably noisy condition, wherein the determination is affirmative if one or more of the values of the acoustic-related parameters exceeds one or more of the threshold values;

(e) establishing the communication session as a live communication session between the telematics unit and the call center, if the step (d) determination is affirmative;

(f) establishing the communication session as an automated communication session between the telematics unit and the call center, if the step (d) determination is negative; and

(g) carrying out one or more subsequent iterations of steps (b)-(d) and converting a previously established automated communication session to a live communication session at any time that the step (d) determination is affirmative.

11. The method of claim 10, further comprising the step of updating one or more of the threshold values by determining a recognition accuracy during one or more automated communication sessions and adjusting at least one threshold value in response to the determined recognition accuracy.

12. A method of adaptively communicating between a telematics unit of a vehicle and a call center based on acoustic conditions, comprising the steps of:

(a) monitoring vehicle sensors for acoustics-related parameters;

(b) analyzing the acoustics-related parameters;

(c) determining if one or more of the acoustics-related parameters are indicative of an unacceptably noisy condition; and

(d) establishing a live communication session between the telematics unit and the call center, if the step (c) determination is affirmative.

13. The method of claim 12, wherein the acoustic-related parameters of the monitoring step (a) include at least one of vehicle speed, engine speed, fan speed, windshield wiper state, windshield wiper speed, seatbelt connection state, door opening/closed state, radio volume, window state, sun roof state, window relative opening, or sun roof relative opening.

14. The method of claim 12, wherein the acoustic-related parameters of the monitoring step (a) include microphone signal-to-noise ratio.

15. The method of claim 12, further comprising the step of carrying out one or more iterations of steps (a)-(c) during a previously established automated communication session and converting the automated communication session to the live communication session at any time that the step (c) determination is affirmative.

16. The method of claim 12, further comprising the step of carrying out one or more iterations of steps (a)-(c) during a previously established automated communication session and maintaining the communication session as an automated communication session if the step (c) determination is affirmative.

17. The method of claim 12, wherein the analyzing step (b) includes comparing values of the acoustics-related parameters to threshold values.

18. The method of claim 17, further comprising the step of periodically updating one or more of the threshold values.

19. The method of claim 18, wherein the updating step further comprises the step of determining a recognition accuracy during one or more automated communication sessions and updating at least one threshold value in response to the determined recognition accuracy.

20. The method of claim 17, wherein it is determined in step (c) that one or more of the acoustics-related parameters are indicative of an unacceptably noisy condition, if one or more of the values of the acoustic-related parameters exceeds one or more of the threshold values.

21. A method of adaptively communicating between a telematics unit of a vehicle and a call center based on acoustic conditions, comprising the steps of:

(a) monitoring vehicle sensors for acoustics-related parameters;

(b) analyzing the acoustics-related parameters;

(c) determining if one or more of the acoustics-related parameters are indicative of an unacceptably noisy condition; and

(d) converting an automated communication session between the telematics unit and the call center to a live communication session between the telematics unit and the call center, if the step (c) determination is affirmative.