公开(公告)号：US09318125B2

公开(公告)日：2016-04-19

申请号：US13741497

申请日：2013-01-15

Applicant: INTEL MOBILE COMMUNICATIONS GMBH

Inventor： Navin Chatlani

IPC: G10L21/00 ,  G10L21/0264 ,  G10L21/0232

CPC classification number: G10L21/0264 ,  G10L21/0232

Abstract: A noise reduction device may be provided. The noise reduction device may include: an input configured to receive an input signal including a representation in a frequency domain of an audio signal, wherein the representation includes a plurality of time frames and a plurality of coefficients for each time frame; a noise detection circuit configured to determine a first indicator being indicative of a bandwidth of a coefficient over at least two time; a noise reduction circuit configured to reduce based on the first indicator a noise component in the audio signal; and an output configured to output an output signal including a representation in the frequency domain of the audio signal with the reduced noise component.

Abstract translation: 可以提供降噪装置。 噪声降低装置可以包括：被配置为接收包括音频信号的频域中的表示的输入信号的输入，其中所述表示包括用于每个时间帧的多个时间帧和多个系数; 噪声检测电路，被配置为确定指示系数至少两次的带宽的第一指示符; 噪声降低电路，被配置为基于所述第一指示符来减少所述音频信号中的噪声分量; 以及输出，被配置为输出包括具有降低的噪声分量的音频信号的频域中的表示的输出信号。