公开(公告)号：US20070299655A1

公开(公告)日：2007-12-27

申请号：US11425809

申请日：2006-06-22

申请人： Laura Laaksonen ,  Jarmo Hiipakka ,  Ville Myllyla ,  Kalle I. Makinen

发明人： Laura Laaksonen ,  Jarmo Hiipakka ,  Ville Myllyla ,  Kalle I. Makinen

IPC分类号： G10L19/14

CPC分类号： G10L21/038

摘要： An apparatus for providing low frequency expansion of speech includes a nonlinear function element, a band-pass filter element and a level control element. The non-linear function element is configured to receive a signal including at least two harmonic components and to produce a signal including at least one lower frequency harmonic component having a lower frequency than a highest frequency component of the at least two harmonic components responsive to the signal including at least two harmonic components. The band-pass filter element is in communication with the non-linear function element and configured to filter the signal including the at least one lower frequency harmonic component. The level control element is configured to apply a level control to alter the filtered signal based on a feature vector associated with an input speech signal.

摘要翻译： 用于提供语音的低频扩展的装置包括非线性功能元件，带通滤波器元件和电平控制元件。 非线性功能元件被配置为接收包括至少两个谐波分量的信号，并产生包括至少一个低频谐波分量的信号，该低频谐波分量的频率低于至少两个谐波分量的最高频率分量 信号包括至少两个谐波分量。 带通滤波器元件与非线性功能元件通信，并且被配置为对包括至少一个较低频率谐波分量的信号进行滤波。 电平控制元件被配置为施加电平控制以基于与输入语音信号相关联的特征向量来改变滤波信号。