公开(公告)号：US09431024B1

公开(公告)日：2016-08-30

申请号：US14731432

申请日：2015-06-05

Applicant: Faraday Technology Corp.

Inventor： Chung-Chi Hsu

IPC: G10L21/02 ,  G10L21/034 ,  G10L19/02 ,  G10L21/0264 ,  G10L21/0232

CPC classification number: G10L25/84 ,  G10L21/0216 ,  G10L21/0232

Abstract: A method and an apparatus for detecting noise of audio signals are provided. The method includes steps of converting an audio signal into a plurality of audio frames, where the audio frames are arranged in chronological order while taking a target frame as a center, calculating a plurality of magnitudes respectively corresponding to a plurality of spectral components of each of the audio frames, calculating differences between the adjacent magnitudes in a time-frequency domain to obtain a plurality of difference values in at least two directions orthogonal to each other in the time-frequency domain, where the time-frequency domain is defined by the audio frames, determining a maximum degree of difference of the magnitudes in the time-frequency domain according to the difference values, and determining whether a part of the audio signal corresponding to the target frame is a noise according to the maximum degree of difference.

Abstract translation: 提供了一种用于检测音频信号噪声的方法和装置。 该方法包括以下步骤：将音频信号转换成多个音频帧，其中音频帧按照时间顺序排列，同时以目标帧为中心，计算分别对应于每个的多个频谱分量的多个量值 音频帧，计算时间 - 频域中的相邻量值之间的差异，以在时间 - 频率域中彼此正交的至少两个方向上获得多个差值，其中时间 - 频域由音频 根据差值确定时频域中的幅度的最大差异度，并且根据最大差异度来确定与目标帧对应的音频信号的一部分是否为噪声。

公开(公告)号：US20160260442A1

公开(公告)日：2016-09-08

申请号：US14731432

申请日：2015-06-05

Applicant: Faraday Technology Corp.

Inventor： Chung-Chi Hsu

IPC: G10L21/034 ,  G10L21/0264 ,  G10L21/0232 ,  G10L19/02

CPC classification number: G10L25/84 ,  G10L21/0216 ,  G10L21/0232

Abstract: A method and an apparatus for detecting noise of audio signals are provided. The method includes steps of converting an audio signal into a plurality of audio frames, where the audio frames are arranged in chronological order while taking a target frame as a center, calculating a plurality of magnitudes respectively corresponding to a plurality of spectral components of each of the audio frames, calculating differences between the adjacent magnitudes in a time-frequency domain to obtain a plurality of difference values in at least two directions orthogonal to each other in the time-frequency domain, where the time-frequency domain is defined by the audio frames, determining a maximum degree of difference of the magnitudes in the time-frequency domain according to the difference values, and determining whether a part of the audio signal corresponding to the target frame is a noise according to the maximum degree of difference.

Abstract translation: 提供了一种用于检测音频信号噪声的方法和装置。 该方法包括以下步骤：将音频信号转换成多个音频帧，其中音频帧按照时间顺序排列，同时以目标帧为中心，计算分别对应于每个的多个频谱分量的多个量值 音频帧，计算时间 - 频域中的相邻量值之间的差异，以在时间 - 频率域中彼此正交的至少两个方向上获得多个差值，其中时间 - 频域由音频 根据差值确定时频域中的幅度的最大差异度，并且根据最大差异度来确定与目标帧对应的音频信号的一部分是否为噪声。