公开(公告)号：EP2458587A1

公开(公告)日：2012-05-30

申请号：EP11009360.6

申请日：2011-11-25

申请人： Yamaha Corporation ,  Nara Institute of Science and Technology National University Corporation

发明人： Inoue, Takayuki ,  Saruwatari, Hiroshi ,  Kondo, Kazunobu

IPC分类号： G10L21/02

CPC分类号： G10L21/0208 ,  G10L2021/02085 ,  G10L2021/02163

摘要： An audio processing apparatus generates a suppression coefficient sequence that is composed of coefficient values corresponding to frequency components of an audio signal, the frequency components being multiplied by the corresponding coefficient values to suppress noise components of the audio signal. In the audio processing apparatus, a characteristic value calculation unit calculates a noise characteristic value depending on a shape of a magnitude distribution of the audio signal. An intensity setting unit variably sets a suppression intensity of the noise components based on the noise characteristic value. A coefficient sequence generation unit generates the suppression coefficient sequence based on the audio signal and the suppression intensity.

摘要翻译： 音频处理装置生成由与音频信号的频率分量对应的系数值组成的抑制系数序列，频率分量乘以相应的系数值，以抑制音频信号的噪声分量。 在音频处理装置中，特征值计算单元根据音频信号的幅度分布的形状来计算噪声特性值。 强度设定单元根据噪声特性值可变地设定噪声成分的抑制强度。 系数序列生成单元基于音频信号和抑制强度生成抑制系数序列。