Method and Apparatus for an Active Vehicle Sound Management System

• US 20100329488A1
• Filed: 06/25/2009
• Published: 12/30/2010
• Est. Priority Date: 06/25/2009
• Status: Abandoned Application

• Current Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Original Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Inventors: Holub, Patrick K.
• Application Number:
  US12/491,269
• Publication Number:
  US 20100329488A1
• Time in Patent Office: Days
• US Class Current: 381/301
• CPC Class Codes: H04R 2410/05 Noise reduction with a separate noise microphone
• CPC Class Codes: H04R 2420/01 Input selection or mixing for amplifiers or loudspeakers for hearing aids H04R25/43
• CPC Class Codes: H04R 2420/03 Connection circuits to selectively connect loudspeakers or headphones to amplifiers
• CPC Class Codes: H04R 2430/01 Aspects of volume control, not necessarily automatic, in sound systems
• CPC Class Codes: H04R 2499/13 Acoustic transducers and sound field adaptation in vehicles
• CPC Class Codes: H04R 27/00 Public address systems circuits for preventing acoustic reaction H04R3/02; circuits for distributing signals to loudspeakers H04R3/12; monitoring or testing arrangements for public address systems H04R29/007; amplifiers H03F

Abstract

An active sound management system for a vehicle includes a plurality of zones defined in the vehicle, each zone including at least one speaker and at least one microphone associated therewith, and a control unit operatively connected to the plurality of zones, the control unit having an input line for receiving an input signal from the at least one microphone of each of the plurality of zones and an output line for sending an output signal to the at least one speaker of each of the plurality of zones. The control unit is capable of selectively communicating with at least one of the plurality of zones defined in the vehicle in a plurality of selected modes, the plurality of selected modes being selected from a group consisting of a noise cancellation mode, a speech amplification mode, a voice privacy mode, an audio/multimedia mode, a voice recognition mode, and a cell phone interface mode, whereby the control unit is operative to manage the sound in the vehicle in the at least one of the plurality of zones defined in the vehicle when in the at least one of the plurality of selected modes.

Claims

1. An active sound management system for a vehicle comprising:

a plurality of zones defined in the vehicle, each zone including at least one speaker and at least one microphone associated therewith; and

a control unit operatively connected to the plurality of zones, the control unit having an input line for receiving an input signal from the at least one microphone of each of the plurality of zones and an output line for sending an output signal to the at least one speaker of each of the plurality of zones;

wherein the control unit is capable of selectively communicating with at least one of the plurality of zones defined in the vehicle in at least one of a plurality of selected modes, the plurality of selected modes being selected from a group consisting of a noise cancellation mode, a speech amplification mode, a voice privacy mode, an audio/multimedia mode, a voice recognition mode, and a cell phone interface mode, whereby the control unit is operative to manage the sound in the vehicle in the at least one of the plurality of zones defined in the vehicle when in the at least one of the plurality of selected modes.

2. The active sound management system for a vehicle of claim 1 wherein the control unit is capable of selectively communicating between at least two of the plurality of zones defined in the vehicle in at least one of the plurality of selected modes.

3. The active sound management system for a vehicle of claim 2, wherein the at least two of the plurality of zones is selected from the group consisting of at least two individual seats in the vehicle, at least two rows of seats in the vehicle, and at least one individual seat in the vehicle and at least one row of seats in the vehicle.

4. The active sound management system for a vehicle of claim 1 wherein in the noise cancellation mode, noise within the vehicle would be reduced or minimized through filtering of the input signal from at least one microphone from at least one zone to the control unit to maximize the separation of voice and background sounds and broadcast through at least one speaker of the at least one zone an inverse phased cancelling sound for all controllable background sound frequencies and amplitudes detected at the at least one zone to the at least one speaker thereof.

5. The active sound management system for a vehicle of claim 2 wherein in the speech amplification mode, spoken communication from at least one microphone from one of the at least two plurality of zones is transmitted to the control unit and separated voice signals are enhanced by amplification and are transmitted by the control unit to the at least one speaker of the other one of the at least two plurality of zones.

6. The active sound management system for a vehicle of claim 2 wherein in the illustrated voice privacy mode, the control unit uses the input from at least one microphone from one of the at least two plurality of zones to adjust the volume and/or content of voice masking sound delivered to the at least one speaker of the other one of the at least two plurality of zones.

7. The active sound management system for a vehicle of claim 1 wherein in the audio/multimedia mode, audio content of at least one zone is output by the control unit to the at least one speaker of the at least one zone and wherein noise cancellation algorithms are used to minimize background vehicle/road noise in the at least one zone and to create cancelling signals of the audio content to the at least one speaker of any other active zone and of any desired inactive zone.

8. The active sound management system for a vehicle of claim 1 wherein in the voice recognition command mode, the control unit uses the input signals from at least one microphone at the at least one zone to facilitate voice recognition of a vehicle passenger in the at least one zone.

9. The active sound management system for a vehicle of claim 1 wherein in the cell phone interface mode, the control unit uses the input signal from at least one microphone at the at least one zone to facilitate cell phone conversation participation by a vehicle passenger in the at least one zone.

10. A method of operation for an active sound management system for a vehicle comprising the steps of:

(a) providing a plurality of zones defined in the vehicle, each zone including at least one speaker and at least one microphone associated therewith;

(b) providing a control unit operatively connected to the plurality of zones, the control unit having an input line for receiving an input signal from the at least one microphone of each of the plurality of zones and an output line for sending an output signal to the at least one speaker of each of the plurality of zones; and

(c) operating the control unit whereby the control unit selectively communicates with at least one of the plurality of zones defined in the vehicle in a plurality of selected modes, the plurality of selected modes being selected from a group consisting of a noise cancellation mode, a speech amplification mode, a voice privacy mode, an audio/multimedia mode, a voice recognition mode, and a cell phone interface mode, whereby the control unit is operative to manage the sound in the vehicle in the at least one of the plurality of zones defined in the vehicle when in the at least one of the plurality of selected modes.

11. The method of operation for an active sound management system for a vehicle of claim 10 wherein in step (c) the control unit is capable of selectively communicating between at least two of the plurality of zones defined in the vehicle in at least one of the plurality of selected modes.

12. The method of operation for an active sound management system for a vehicle of claim 11 wherein the at least two of the plurality of zones in step (c) is selected from the group consisting of at least two individual seats in the vehicle, at least two rows of seats in the vehicle, and at least one individual seat in the vehicle and at least one row of seats in the vehicle.

13. The method of operation for an active sound management system for a vehicle of claim 10 wherein in step (c) the noise cancellation mode, noise within the vehicle would be reduced or minimized through filtering of the input signal from at least one microphone from at least one zone to the control unit to maximize the separation of voice and background sounds and broadcast through at least one speaker of the at least one zone an inverse phased cancelling sound for all controllable background sound frequencies and amplitudes detected at the at least one zone to the at least one speaker thereof.

14. The method of operation for an active sound management system for a vehicle of claim 11 wherein in step (c) the speech amplification mode, spoken communication from at least one microphone from one of the at least two plurality of zones is transmitted to the control unit and separated voice signals are enhanced by amplification and are transmitted by the control unit to the at least one speaker of the other one of the at least two plurality of zones.

15. The method of operation for an active sound management system for a vehicle of claim 11 wherein in step (c) the illustrated voice privacy mode, the control unit uses the input from at least one microphone from one of the at least two plurality of zones to adjust the volume and/or content of voice masking sound delivered to the at least one speaker of the other one of the at least two plurality of zones.

16. The method of operation for an active sound management system for a vehicle of claim 10 wherein in step (c) the audio/multimedia mode, audio content of at least one zone is output by the control unit to the at least one speaker of the at least one zone and wherein noise cancellation algorithms are used to minimize background vehicle/road noise in the at least one zone and to create cancelling signals of the audio content to the at least one speaker of any other active zone and of any desired inactive zone.

17. The method of operation for an active sound management system for a vehicle of claim 10 wherein in step (c) the voice recognition command mode, the control unit uses the input signals from at least one microphone at the at least one zone to facilitate voice recognition of a vehicle passenger in the at least one zone.

18. The method of operation for an active sound management system for a vehicle of claim 10 wherein in step (c) the cell phone interface mode, the control unit uses the input signal from at least one microphone at the at least one zone to facilitate cell phone conversation participation by a vehicle passenger in the at least one zone.

19. A method of operation for an active sound management system for a vehicle comprising the steps of:

(a) providing a plurality of zones defined in a vehicle, each zone including a speaker and a microphone associated therewith;

(b) providing a control unit operatively connected to the plurality of zones, the control unit having an input line for receiving an input signal from the microphone of each of the plurality of zones and an output line for sending an output signal to the speaker of each of the plurality of zones; and

(c) operating the control unit whereby the control unit selectively communicates between at least two of the plurality of zones defined in the vehicle in a plurality of selected modes, the plurality of selected modes being selected from a group consisting of a noise cancellation mode, a speech amplification mode, a voice privacy mode, an audio/multimedia mode, a voice recognition mode, and a cell phone interface mode, whereby the control unit is operative to manage the sound in the vehicle between the at least two of the plurality of zones defined in the vehicle when in the at least one of the plurality of selected modes.

20. The method of operation for an active sound management system for a vehicle of claim 19 wherein the at least two of the plurality of zones in step (c) is selected from the group consisting of at least two individual seats in the vehicle, at least two rows of seats in the vehicle, and at least one individual seat in the vehicle and at least one row of seats in the vehicle.