System and method for selective volume adjustment in a vehicle

Patent metadata

Field	Value
Publication number	US-9893697-B1
Application number	US-201715627174-A
Country	US
Kind code	B1
Filing date	Jun 19, 2017
Priority date	Jun 19, 2017
Publication date	Feb 13, 2018
Grant date	Feb 13, 2018

Abstract

Systems and methods for automatically adjusting volume in a vehicle are provided. One method includes generating a noise prediction based on images received from a vehicle camera; determining a cabin noise level based on the noise prediction and an audio signal detected by a cabin microphone; and selectively amplifying a quiet passage within the detected audio signal to above the cabin noise level while maintaining volume level of remaining passages within the detected signal. A vehicle system includes a cabin microphone for detecting an audio signal; a camera for capturing images; and a processor configured to: generate a noise prediction based on the images; determine a cabin noise level based on the noise prediction and the detected audio signal; and selectively amplify a quiet passage within the detected signal to above the cabin noise level while maintaining volume level of remaining passages within the detected signal.

First claim

The invention claimed is:

1. A method of automatically adjusting volume in a vehicle, comprising:
generating a noise prediction based on images received from at least one vehicle camera;
determining a cabin noise level based on the noise prediction and an audio signal detected by a cabin microphone; and
selectively amplifying at least one quiet passage within the detected audio signal to above the cabin noise level while maintaining volume level of remaining passages within the detected signal.

2. The method of claim 1 , further comprising selectively decreasing an amplitude of at least one loud passage within the detected audio signal to below a predetermined loud threshold while maintaining the volume level of the remaining passages.

3. The method of claim 1 , wherein the images include information related to vehicle surroundings.

4. The method of claim 1 , wherein the images include information related to vehicle occupants.

5. The method of claim 1 , further comprising generating the noise prediction based further on vehicle location data obtained from a wireless receiver.

6. The method of claim 1 , further comprising generating the noise prediction based further on usage data received from an electronic device located in a vehicle cabin.

7. The method of claim 1 , wherein determining the cabin noise level includes comparing the detected audio signal to an original audio signal provided to a vehicle speaker to obtain a cabin noise signal.

8. A vehicle system, comprising:
a cabin microphone for detecting an audio signal;
at least one camera for capturing images;
a processor configured to:
generate a noise prediction based on the images;
determine a cabin noise level based on the noise prediction and the detected audio signal; and
selectively amplify at least one quiet passage within the detected signal to above the cabin noise level while maintaining volume level of remaining passages within the detected signal.

9. The vehicle system of claim 8 , wherein the processor is further configured to selectively decrease an amplitude of at least one loud passage within the detected audio signal to below a predetermined loud threshold while maintaining the volume level of the remaining passages.

10. The vehicle system of claim 8 , wherein the at least one camera is configured to capture images of an area outside the vehicle.

11. The vehicle system of claim 10 , wherein the processor generates the noise prediction based on vehicle surroundings data obtained from the captured images.

12. The vehicle system of claim 8 , wherein the at least one camera is configured to capture images of an area inside the vehicle.

13. The vehicle system of claim 12 , wherein the processor generates the noise prediction based on vehicle occupant data obtained from the captured images.

14. The vehicle system of claim 8 , further comprising a wireless receiver for obtaining vehicle location data, the processor generating the noise prediction based further on the vehicle location data.

15. The vehicle system of claim 8 , further comprising an audio speaker for outputting an original audio signal, wherein the processor is configured to determine the cabin noise level by comparing the detected audio signal to the original audio signal to obtain a cabin noise signal.

Assignees

• Ford Global Tech Llc

Inventors

• Churchwell Ii Howard E
• Ghannam Mahmoud Yousef
• Jensen John

Classifications

• G06K9/00832

  Physics · mapped topic

• H04R29/001

  for loudspeakers (H04R29/007 takes precedence) · CPC title

• G06K9/00791

  Physics · mapped topic

• H03G3/32 Primary

  the control being dependent upon ambient noise level or sound level · CPC title

• H04R2499/13

  Acoustic transducers and sound field adaptation in vehicles · CPC title