公开(公告)号：US08311812B2

公开(公告)日：2012-11-13

申请号：US12629006

申请日：2009-12-01

申请人： John P. Kroeker ,  Janet Slifka ,  Richard S. McGowan

发明人： John P. Kroeker ,  Janet Slifka ,  Richard S. McGowan

IPC分类号： G10L15/02 ,  G10L19/02

CPC分类号： G10L25/15

摘要： A method and apparatus are provided for determining an instantaneous frequency and an instantaneous bandwidth of a speech resonance of a speech signal. The method includes receiving a speech signal having a real component; filtering the speech signal so as to generate a plurality of filtered signals such that the real component and an imaginary component of the speech signal are reconstructed; and generating a first estimated frequency and a first estimated bandwidth of a speech resonance of the speech signal based on both a first filtered signal of the plurality of filtered signals and a single-lag delay of the first filtered signal.

摘要翻译： 提供了一种用于确定语音信号的语音共振的瞬时频率和瞬时带宽的方法和装置。 该方法包括接收具有真实分量的语音信号; 对所述语音信号进行滤波，以产生多个经滤波的信号，使得重构所述语音信号的实数分量和虚分量; 以及基于所述多个滤波信号的第一滤波信号和所述第一滤波信号的单滞后延迟来产生所述语音信号的语音共振的第一估计频率和第一估计带宽。

公开(公告)号：US20110131039A1

公开(公告)日：2011-06-02

申请号：US12629006

申请日：2009-12-01

申请人： John P. Kroeker ,  Janet Slifka ,  Richard S. McGowan

发明人： John P. Kroeker ,  Janet Slifka ,  Richard S. McGowan

IPC分类号： G10L21/00

CPC分类号： G10L25/15

摘要： A method and apparatus are provided for determining an instantaneous frequency and an instantaneous bandwidth of a speech resonance of a speech signal. The method includes receiving a speech signal having a real component; filtering the speech signal so as to generate a plurality of filtered signals such that the real component and an imaginary component of the speech signal are reconstructed; and generating a first estimated frequency and a first estimated bandwidth of a speech resonance of the speech signal based on both a first filtered signal of the plurality of filtered signals and a single-lag delay of the first filtered signal.

摘要翻译： 提供了一种用于确定语音信号的语音共振的瞬时频率和瞬时带宽的方法和装置。 该方法包括接收具有真实分量的语音信号; 对所述语音信号进行滤波，以产生多个经滤波的信号，使得重构所述语音信号的实数分量和虚分量; 以及基于所述多个滤波信号的第一滤波信号和所述第一滤波信号的单滞后延迟来产生所述语音信号的语音共振的第一估计频率和第一估计带宽。

公开(公告)号：US20140122067A1

公开(公告)日：2014-05-01

申请号：US13665486

申请日：2012-10-31

申请人： John P. Kroeker ,  Janet Slifka ,  Richard S. McGowan

发明人： John P. Kroeker ,  Janet Slifka ,  Richard S. McGowan

IPC分类号： G10L25/15

CPC分类号： G10L25/15

摘要： A speech analysis system uses one or more digital processors to reconstruct a speech signal by accurately extracting speech formants from a digitized version of the speech signal. The system extracts the formants by determining an estimated instantaneous frequency and an estimated instantaneous bandwidth of speech resonances of the digital version of the speech signal in real time. The system digitally filters the digital speech signal using a plurality of complex digital filters in parallel having overlapping bandwidths to ensure that substantially all of the bandwidth of the speech signal is covered. This virtual chain of overlapping complex digital filters produces a corresponding plurality of complex filtered signals. A first estimated frequency and a first estimated bandwidth is generated for each of the filtered signals, and speech resonances of the input speech signal are identified therefrom.

摘要翻译： 语音分析系统使用一个或多个数字处理器通过从语音信号的数字化版本精确地提取语音共振峰来重建语音信号。 该系统通过实时估计语音信号的数字版本的语音共振的估计瞬时频率和估计的瞬时带宽来提取共振峰。 该系统使用具有重叠带宽并行的多个复数数字滤波器对数字语音信号进行数字滤波，以确保覆盖语音信号的基本上所有的带宽。 这个重叠的复数数字滤波器虚拟链产生相应的多个复数滤波信号。 为每个滤波信号产生第一估计频率和第一估计带宽，并且从其识别输入语音信号的语音谐振。