公开(公告)号：US09154881B2

公开(公告)日：2015-10-06

申请号：US13973739

申请日：2013-08-22

Applicant: NXP B.V.

Inventor： Temujin Gautama ,  Alan Ocinneide

IPC: H04R5/04 ,  G10L19/005

CPC classification number: H04R5/04 ,  G10L19/005

Abstract: Systems and method for audio processing are disclosed. Left and right channels of an audio data stream are combined to derive sum and difference signals. A time domain to frequency domain converter is provided for converting the sum and difference signals to the frequency domain. a first processing unit is provided for deriving a frequency domain noise signal based at least partly on the frequency domain difference signal. A second processing unit is provided for processing the frequency domain sum signal using the noise signal thereby to reduce noise artifacts in the sum signal. A frequency domain to time domain converter is provided for converting at least the processed frequency domain sum signal to the time domain.

Abstract translation: 公开了用于音频处理的系统和方法。 组合音频数据流的左和右声道以导出和和差信号。 提供时域到频域转换器，用于将和信号和差信号转换成频域。 第一处理单元被提供用于至少部分地基于频域差信号导出频域噪声信号。 提供第二处理单元，用于使用噪声信号来处理频域和信号，从而减少和信号中的噪声伪像。 提供了一个频域至时域转换器，用于至少将经处理的频域和信号转换为时域。