Title:
オーディオ強化システムおよび方法
Document Type and Number:
Japanese Patent JP4755506
Kind Code:
B2
Abstract:
A system and method for enhancing the sound signal produced by an audio system in a listening environment by compensating for ambient noise in a listening environment is provided, which produce an electrical sound signal and generating a sound output from said electrical sound signal; obtain a total sound signal representative of the total sound level in said environment, wherein said total sound level comprises both said sound output from said audio means and the ambient noise within said environment; extract an ambient noise signal representative of the ambient noise in said environment from said total sound signal in response to said total sound signal and to a reference signal derived from said electrical sound signal, said extraction step comprising an adaptive adaptive filtering with an adaptation step size; generate a control signal based on the outcome of said analysis in response to said ambient noise signal; adjust the sound output of said audio means to compensate for said ambient noise level in response to said control signal; and a step size calculation step for controlling the adaptive adaption step size of said adaptive filtering.
Inventors:
Marx Christoph
Application Number:
JP2006053925A
Publication Date:
August 24, 2011
Filing Date:
February 28, 2006
Export Citation:
Assignee:
Herman Becker Automotive Systems GM Behr
International Classes:
H04R3/00; B60R11/02; G10K11/178; H03G5/16; H04R1/02
Domestic Patent References:
| JP2005027273A | ||||
| JP9116469A | ||||
| JP6310962A | ||||
| JP2005086284A | ||||
| JP10206180A | ||||
| JP2001195085A |
Attorney, Agent or Firm:
Hidesaku Yamamoto
Takaaki Yasumura
Natsuki Morishita
Takaaki Yasumura
Natsuki Morishita