APPARATUS AND METHOD FOR PERFORMING AN AUDIO MEASUREMENT SWEEP

• US 20150023509A1
• Filed: 07/18/2014
• Published: 01/22/2015
• Est. Priority Date: 07/18/2013
• Status: Active Grant

• Current Assignee: Harman International Industries Incorporated (Samsung Electronics Co. Ltd.)
• Original Assignee: Harman International Industries Incorporated (Samsung Electronics Co. Ltd.)
• Inventors: Devantier, Allan, Hess, Sean
• Granted Patent: US 9,596,553 B2
• Time in Patent Office: Days
• US Class Current: 381/58
• CPC Class Codes: H04R 2430/03 Synergistic effects of band splitting and sub-band processing
• CPC Class Codes: H04R 29/001 for loudspeakers H04R29/007 takes precedence
• CPC Class Codes: H04R 3/007 Protection circuits for transducers

Abstract

In at least one embodiment, an apparatus for performing an audio measurement is provided. The apparatus includes a controller that is programmed to generate an audio test signal based on a first frequency range that comprises a first noise spectrum, a second frequency range that comprises a second noise spectrum, and a third frequency range that comprises a third noise spectrum and to transmit the audio test signal to an audio device that generates an audio response signal responsive to the audio test signal. The controller is further programmed to receive the audio response signal and to determine audio related characteristics for the audio device in response to the audio response signal.

Claims

1. An apparatus for performing an audio measurement, the apparatus comprising:

a controller programmed to;

generate an audio test signal based on a first frequency range that comprises a first noise spectrum, a second frequency range that comprises a second noise spectrum, and a third frequency range that comprises a third noise spectrum;

transmit the audio test signal to an audio device that generates an audio response signal responsive to the audio test signal;

receive the audio response signal; and

determine audio related characteristics for the audio device in response to the audio response signal.

2. The apparatus of claim 1 wherein the first noise spectrum comprises a white noise spectrum.

3. The apparatus of claim 2 wherein the second noise spectrum comprises a pink noise spectrum.

4. The apparatus of claim 3 wherein the third noise spectrum comprises a red noise spectrum.

5. The apparatus of claim 1 wherein the audio related characteristics comprise a frequency response and a time domain response.

6. The apparatus of claim 1 wherein the controller is further programmed to merge the first frequency range, the second frequency range, and the third frequency range together on the audio test signal prior to transmitting the audio test signal.

7. The apparatus of claim 1 wherein the controller is further programmed to convert first frequencies within the first frequency range, second frequencies within the second frequency range, and third frequencies within the third frequency range into a time domain prior to transmitting the audio test signal to the audio device.

8. The apparatus of claim 7 wherein the controller is further programmed to perform an Inverse Fast Fourier Transform (IFFT) on the first frequencies, the second frequencies, and the third frequencies for conversion into the time domain.

9. The apparatus of claim 7 wherein the controller is further programmed to apply a digital filter to the first frequencies, the second frequencies, and the third frequencies such that data on the audio test signal starts at zero and ends at zero prior to transmitting the audio test signal to the audio device.

10. A computer-program product embodied in a non-transitory computer readable medium that is programmed to perform an audio measurement, the computer-program product comprising instructions to:

generate an audio test signal based on at least a first frequency range of a white noise spectrum;

transmit the audio test signal to an audio device that generates an audio response signal responsive to the audio test signal;

receive the audio response signal; and

determine audio related characteristics for the audio device in response to the audio response signal.

11. The computer-program product of claim 10 further comprising instructions to generate the audio test signal based on a second frequency range of a pink noise spectrum.

12. The computer-program product of claim 11 further comprising instructions to generate the audio test signal based on a third frequency range of a red noise spectrum.

13. The computer-program product of claim 12 wherein the audio related characteristics comprise a frequency response and a time domain response.

14. The computer-program product of claim 12 further comprising instructions to merge the first frequency range, the second frequency range, and the third frequency range together on the audio test signal prior to transmitting the audio test signal.

15. The computer-program product of claim 12 further comprising instructions to convert first frequencies within the first frequency range, second frequencies within the second frequency range, and third frequencies within the third frequency range into a time domain prior to transmitting the audio test signal to the audio device.

16. The computer-program product of claim 15 further comprising instructions to perform an Inverse Fast Fourier Transform (IFFT) on the first frequencies, the second frequencies, and the third frequencies for conversion into the time domain.

17. The computer-program product of claim 15 further comprising instructions to apply a digital filter to the first frequencies, the second frequencies, and the third frequencies such that data on the audio test signal starts at zero and ends at zero prior to transmitting the audio test signal to the audio device.

18. An apparatus comprising:

an audio device programmed to;

generate an audio response signal responsive to an audio test signal that is based on a first frequency range that comprises a first noise spectrum, a second frequency range that comprises a second noise spectrum, and a third frequency range that comprises a third noise spectrum; and

transmit the audio response signal to a controller that determines audio related characteristics for the audio device in response to the audio response signal.

19. The apparatus of claim 18 wherein the audio related characteristics comprise a frequency response and a time domain response.

20. The apparatus of claim 18 wherein the first noise spectrum comprises a white noise spectrum, the second noise spectrum comprises a pink spectrum, and the third noise spectrum comprises a red spectrum.