System and Method for Measuring the Speech Quality of Telephone Devices in the Presence of Noise

• US 20090061843A1
• Filed: 08/28/2007
• Published: 03/05/2009
• Est. Priority Date: 08/28/2007
• Status: Abandoned Application

• Current Assignee: Spirent Communications Incorporated
• Original Assignee: Spirent Communications Incorporated
• Inventors: Topaltzas, Dimitrios M.
• Application Number:
  US11/846,198
• Publication Number:
  US 20090061843A1
• Time in Patent Office: Days
• US Class Current: 455/423
• CPC Class Codes: H04M 1/24 Arrangements for testing

Abstract

A system and method for measuring speech quality of a mobile telephone device in the presence of noise is provided. In one embodiment the method may comprise determining a test speech volume, which that comprises the speech volume that results in the best speech quality provided by the telephone device when the telephone device is not in the presence of noise. Subsequently, the method may include audibly producing test speech having a volume substantially equal to the test speech volume for reception by the telephone device, concurrently with audibly producing test speech, supplying audible noise to the telephone device, receiving a signal that includes the test speech and noise communicated from the telephone device; and determining a speech quality for the received signal. The method may be repeated for numerous telephone devices, including handsets and telephone accessory devices, under different noise conditions, and/or for different communication networks.

Claims

1. A method for measuring speech quality of a mobile telephone device in the presence of noise, comprising:

determining a test speech volume that comprises a speech volume that results in the best speech quality for audible speech received by the telephone device and communicated to a device;

audibly producing test speech having a volume substantially equal to the test speech volume for reception by the telephone device;

concurrently with audibly producing test speech, supplying audible noise to the telephone device;

receiving a communication signal that comprises the test speech and noise communicated from the telephone device; and

determining a speech quality for the received communication signal.

2. The method of claim 1, wherein determining a test speech volume comprises audibly producing test speech for reception by the telephone device at a plurality of speech volumes.

3. The method of claim 1, wherein the communication signals is communicated from the telephone device through a base station simulator.

4. The method of claim 1, wherein the mobile telephone device comprises a wireless earpiece communicatively coupled to a mobile telephone handset.

5. The method of claim 1, wherein said audibly producing test speech, said supplying audible noise, said receiving the communication signal, and said determining a speech quality are performed a plurality of times using a different noise each time.

6. The method of claim 1, further comprising storing the received communication signal in a memory, and wherein said determining a speech quality comprises executing program code configured to determine the speech quality by providing a mean opinion score.

7. The method of claim 1, further comprising storing the received communication signal in a memory, and wherein said determining a speech quality comprises audibly producing the speech and noise to a live listener.

23. The method of claim 1, further comprising storing the received communication signal in a memory, and wherein said determining a speech quality comprises audibly producing the speech and noise to a live listener.

8. A method for measuring speech quality of a telephone device in the presence of noise, comprising:

selecting a speech volume based on an associated speech quality provided by the telephone device for the selected speech volume without application of noise;

audibly producing test speech having a volume substantially equal to the selected speech volume;

concurrently with audibly producing test speech, audibly producing noise for reception by the telephone device;

receiving a communication signal communicated from the telephone device that represents the test speech produced during audible production of the noise; and

determining a speech quality for the received communication signal.

9. The method of claim 8, further comprising storing the received communication signal in a memory, and wherein said determining a speech quality comprises executing program code configured to determine the speech quality by providing a mean opinion score.

10. The method of claim 8, wherein the communication signals is communicated from the telephone device through a base station simulator.

11. The method of claim 8, wherein the mobile telephone device comprises a wireless earpiece communicatively coupled to a mobile telephone handset.

12. The method of claim 8, wherein said audibly producing test speech, said supplying audible noise, said receiving the communication signal, and said determining a speech quality are performed a plurality of times using a different noise each time.

13. The method of claim 8, further comprising storing the received communication signal in a memory, and wherein said determining a speech quality comprises audibly producing the speech and noise to a live listener.

14. The method of claim 8, further comprising:

selecting a noise file; and

executing an audio player to create an analog signal representative of the noise file.

15. A method for measuring speech quality of a telephone device in the presence of noise, comprising:

mounting a telephone device to a test device configured to provide speech output to the telephone device;

performing steps a-c using a different volume level to obtain a plurality of speech qualities;

a. audibly producing test speech from the test device to the telephone device having a volume level;

b. receiving the test speech at a remote device; and

c. determining a speech quality for the received test speech;

identifying a test speech volume by determining which of the plurality of volumes of test speech resulted in the best speech quality;

audibly producing test speech from the test device for reception by the telephone device at the test speech volume and concurrently audibly producing noise;

receiving the test speech at a remote device; and

determining a speech quality for the received test speech.

16. The method of claim 15, further comprising storing the received communication signal in a memory, and wherein said determining a speech quality comprises executing program code configured to determine the speech quality by providing a mean opinion score.

17. The method of claim 15, further comprising storing the received communication signal in a memory, and wherein said determining a speech quality comprises audibly producing the speech and noise to a live listener.

18. A method for measuring speech quality of a mobile telephone device in the presence of noise, comprising:

audibly producing test speech for reception by the telephone device at a plurality of speech volumes without application of noise;

determining a speech quality score for the test speech at each of the plurality of volumes;

selecting a speech volume that results in the best speech quality score;

audibly producing test speech having a volume substantially equal to the selected speech volume for reception by the telephone device;

concurrently with audibly producing test speech, supplying audible noise to the telephone device;

receiving a communication signal communicated from the telephone device that represents the test speech produced during audible production of the noise; and

determining a speech quality for the received communication signal.

19. The method of claim 18, wherein the communication signals is communicated from the telephone device through a base station simulator.

20. The method of claim 18, wherein the mobile telephone device comprises a wireless earpiece communicatively coupled to a mobile telephone handset.

21. The method of claim 18, wherein said audibly producing test speech, said supplying audible noise, said receiving the communication signal, and said determining a speech quality are performed a plurality of times using a different noise each time.

22. The method of claim 18, further comprising storing the received communication signal in a memory, and wherein said determining a speech quality comprises executing program code configured to determine the speech quality by providing a mean opinion score.

24. A method for measuring speech quality of a telephone device in the presence of noise, comprising:

providing a test device configured to provide speech output to the telephone device disposed in a sound room;

providing a sound system configured to produce noise in the sound room;

mounting a telephone device to the test device;

audibly producing test speech for reception by the telephone device at a plurality of speech volumes without application of noise;

determining a speech quality score for the test speech at each of the plurality of volumes;

selecting a speech volume that results in the best speech quality score;

audibly producing noise via the sound system;

concurrently with producing the noise, audibly producing test speech having a volume substantially equal to the selected speech volume for reception by the telephone device;

receiving the test speech from the telephone device at a remote device; and

determining a speech quality for the received test speech.

25. The method of claim 24, wherein the test speech is communicated from the telephone device through a base station simulator.