Systems and methods for controlling noise in a vehicle

A noise and interior technology, applied in the direction of active noise control, microphones, sound-generating devices, etc., can solve the problems of the overall performance of the ANC system and the inability to take into account changes in the cabin conditions

Active Publication Date: 2016-05-18
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the ANC system may not be able to account for changes in cabin conditions including, but not limited to: number of passengers, passenger location, aging of cabin components
As a result, the overall performance of the ANC system suffers

Method used

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  • Systems and methods for controlling noise in a vehicle
  • Systems and methods for controlling noise in a vehicle
  • Systems and methods for controlling noise in a vehicle

Examples

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Embodiment Construction

[0077] The following detailed description is merely exemplary in nature and not intended to limit its application and uses. Furthermore, there is no intention to be bound by any expressed or implied theory presented in the preceding technical field, background, brief summary or the following detailed description.

[0078] Referring to the drawings, wherein like reference numerals indicate like parts throughout the several views, as shown and described herein, an audio system 100 and method 500 for controlling noise within a vehicle compartment 102, such as a passenger cabin or cabin . In the exemplary embodiment, compartment 102 is part of vehicle 104 and vehicle 104 is an automobile (not separately numbered). However, it should be appreciated that the system 100 and / or method 500 described herein may be implemented in other types of vehicles 104 including, but not limited to, aircraft or watercraft. Additionally, system 100 and method 500 may be implemented in non-vehicular...

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Abstract

Methods and apparatus are provided for controlling noise in a compartment. The audio system includes an error microphone configured to receive sounds and generate an error signal corresponding to the received sounds. A processor in communication with the error microphone is configured receive the error signal from the error microphone and generate a noise-canceling signal based at least in part on the error signal and an acoustic transfer function. The audio system also includes a loudspeaker in communication with the processor to receive the noise-canceling signal and produce a noise-canceling sound wave based on the noise-canceling signal. The processor is also configured to receive at least one audio signal different from the error signal and to modify the acoustic transfer function utilizing the at least one audio signal.

Description

technical field [0001] The technical field generally relates to systems and methods for controlling interior noise, and more particularly to active noise control systems and methods for motor vehicles. Background technique [0002] Active noise control ("ANC") systems may be implemented in motor vehicles, such as automobiles, to reduce the amount of noise and undesired sounds experienced by passengers. Such systems typically include a microphone to receive the noise and at least one speaker to produce an inverted signal corresponding to the noise to be canceled. ANC systems may use transfer functions, particularly acoustic transfer functions, to mathematically represent the spatial characteristics of the vehicle cabin. The ANC system uses the microphone-generated signal and the acoustic transfer function when generating the noise-canceling signal that is sent to the speakers. [0003] The acoustic transfer functions used in many ANC systems of the prior art are evaluated d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/04
CPCH04R3/04H04R2410/05G10K11/175G10K2210/3055G10K11/17881G10K11/17813G10K2210/1282G10K11/17817G10K11/17827G10K11/17875G10K11/17885G10K11/17825G10L21/0208G10K2210/128G10K2210/1281
Inventor E·茨尔克尔-汉科克S·M·雷利
Owner GM GLOBAL TECH OPERATIONS LLC
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