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1. 发明申请

WO03052744A2 SIGNAL MODIFICATION METHOD FOR EFFICIENT CODING OF SPEECH SIGNALS 审中-公开
标题翻译：用于语音信号有效编码的信号修改方法
公开(公告)号：WO03052744A2
公开(公告)日：2003-06-26
申请号：PCT/CA0201948
申请日：2002-12-13
申请人： VOICEAGE CORP , TAMMI MIKKO , JELINEK MILAN , LAFLAMME CLAUDE , RUOPPILA VESA
发明人： TAMMI MIKKO , JELINEK MILAN , LAFLAMME CLAUDE , RUOPPILA VESA
IPC分类号： G10L19/12 , G10L19/08
CPC分类号： G10L19/08
摘要： For determining a long-term-prediction delay parameter characterizing a long term prediction in a technique using signal modification for digitally encoding a sound signal, the sound signal is divided into a series of successive frames, a feature of the sound signal is located in a previous frame, a corresponding feature of the sound signal is located in a current frame, and the long-term-prediction delay parameter is determined for the current frame while mapping, with the long term prediction, the signal feature of the previous frame with the corresponding signal feature of the current frame. In a signal modification method for implementation into a technique for digitally encoding a sound signal, the sound signal is divided into a series of successive frames, each frame of the sound signal is partitioned into a plurality of signal segments, and at least a part of the signal segments of the frame are warped while constraining the warped signal segments inside the frame. For searching pitch pulses in a sound signal, a residual signal is produced by filtering the sound signal through a linear prediction analysis filter, a weighted sound signal is produced by processing the sound signal through a weighting filter, the weighted sound signal being indicative of signal periodicity, a synthesized weighted sound signal is produced by filtering a synthesized speech signal produced during a last subframe of a previous frame of the sound signal through the weighting filter, a last pitch pulse of the sound signal of the previous frame is located from the residual signal, a pitch pulse prototype of given length is extracted around the position of the last pitch pulse of the sound signal of the previous frame using the synthesized weighted sound signal, and the pitch pulses are located in a current frame using the pitch pulse prototype.
摘要翻译：为了确定在使用用于数字编码声音信号的信号修改的技术中表征长期预测的长期预测延迟参数，声音信号被分成一系列连续的帧，声音信号的特征位于前一帧，声音信号的对应特征位于当前帧中，并且为当前帧确定长期预测延迟参数，同时长期预测将前一帧的信号特征与当前帧的相应信号特征。在用于实现用于对声音信号进行数字编码的技术的信号修改方法中，声音信号被分成一系列连续的帧，声音信号的每个帧被划分为多个信号段，并且至少部分框架的信号段扭曲，同时约束框架内的翘曲的信号段。为了在声音信号中搜索音调脉冲，通过线性预测分析滤波器对声音信号进行滤波来产生残留信号，通过加权滤波器处理声音信号产生加权声音信号，加权声音信号表示信号通过对通过加权滤波器的声音信号的先前帧的最后一个子帧产生的合成语音信号进行滤波，产生合成加权声音信号，前一帧的声音信号的最后音调脉冲位于剩余信号，使用合成的加权声音信号在前一帧的声音信号的最后音调脉冲的位置周围提取给定长度的音调脉冲原型，并且使用音调脉冲原型将音调脉冲位于当前帧中。

2. 发明专利

NO20042974A 未知
公开(公告)号：NO20042974A
公开(公告)日：2004-09-14
申请号：NO20042974
申请日：2004-07-14
申请人： VOICEAGE CORP
发明人： LAFLAMME CLAUDE , TAMMI MIKKO , JELINEK MILAN , RUOPPILA VESA
IPC分类号： G10L19/12 , G10L19/08
CPC分类号： G10L19/08

3. 发明专利

AU2002350340A1 SIGNAL MODIFICATION METHOD FOR EFFICIENT CODING OF SPEECH SIGNALS 未知
公开(公告)号：AU2002350340A1
公开(公告)日：2003-06-30
申请号：AU2002350340
申请日：2002-12-13
申请人： VOICEAGE CORP
发明人： TAMMI MIKKO , JELINEK MILAN , LAFLAMME CLAUDE , RUOPPILA VESA
IPC分类号： G10L19/12 , G10L19/08
摘要： For determining a long-term-prediction delay parameter characterizing a long term prediction in a technique using signal modification for digitally encoding a sound signal, the sound signal is divided into a series of successive frames, a feature of the sound signal is located in a previous frame, a corresponding feature of the sound signal is located in a current frame, and the long-term-prediction delay parameter is determined for the current frame while mapping, with the long term prediction, the signal feature of the previous frame with the corresponding signal feature of the current frame. In a signal modification method for implementation into a technique for digitally encoding a sound signal, the sound signal is divided into a series of successive frames, each frame of the sound signal is partitioned into a plurality of signal segments, and at least a part of the signal segments of the frame are warped while constraining the warped signal segments inside the frame. For searching pitch pulses in a sound signal, a residual signal is produced by filtering the sound signal through a linear prediction analysis filter, a weighted sound signal is produced by processing the sound signal through a weighting filter, the weighted sound signal being indicative of signal periodicity, a synthesized weighted sound signal is produced by filtering a synthesized speech signal produced during a last subframe of a previous frame of the sound signal through the weighting filter, a last pitch pulse of the sound signal of the previous frame is located from the residual signal, a pitch pulse prototype of given length is extracted around the position of the last pitch pulse of the sound signal of the previous frame using the synthesized weighted sound signal, and the pitch pulses are located in a current frame using the pitch pulse prototype.

4. 发明专利

NO20042974L 未知
公开(公告)号：NO20042974L
公开(公告)日：2004-09-14
申请号：NO20042974
申请日：2004-07-14
申请人： VOICEAGE CORP
发明人： LAFLAMME CLAUDE , TAMMI MIKKO , JELINEK MILAN , RUOPPILA VESA
IPC分类号： G10L19/12 , G10L19/08
摘要： For determining a long-term-prediction delay parameter characterizing a long term prediction in a technique using signal modification for digitally encoding a sound signal, the sound signal is divided into a series of successive frames, a feature of the sound signal is located in a previous frame, a corresponding feature of the sound signal is located in a current frame, and the long-term-prediction delay parameter is determined for the current frame while mapping, with the long term prediction, the signal feature of the previous frame with the corresponding signal feature of the current frame. In a signal modification method for implementation into a technique for digitally encoding a sound signal, the sound signal is divided into a series of successive frames, each frame of the sound signal is partitioned into a plurality of signal segments, and at least a part of the signal segments of the frame are warped while constraining the warped signal segments inside the frame. For searching pitch pulses in a sound signal, a residual signal is produced by filtering the sound signal through a linear prediction analysis filter, a weighted sound signal is produced by processing the sound signal through a weighting filter, the weighted sound signal being indicative of signal periodicity, a synthesized weighted sound signal is produced by filtering a synthesized speech signal produced during a last subframe of a previous frame of the sound signal through the weighting filter, a last pitch pulse of the sound signal of the previous frame is located from the residual signal, a pitch pulse prototype of given length is extracted around the position of the last pitch pulse of the sound signal of the previous frame using the synthesized weighted sound signal, and the pitch pulses are located in a current frame using the pitch pulse prototype.

5. 发明专利

DE60219351D1 未知
公开(公告)号：DE60219351D1
公开(公告)日：2007-05-16
申请号：DE60219351
申请日：2002-12-13
申请人： VOICEAGE CORP
发明人： TAMMI MIKKO , JELINEK MILAN , LAFLAMME CLAUDE , RUOPPILA VESA
IPC分类号： G10L19/12
摘要： For determining a long-term-prediction delay parameter characterizing a long term prediction in a technique using signal modification for digitally encoding a sound signal, the sound signal is divided into a series of successive frames, a feature of the sound signal is located in a previous frame, a corresponding feature of the sound signal is located in a current frame, and the long-term-prediction delay parameter is determined for the current frame while mapping, with the long term prediction, the signal feature of the previous frame with the corresponding signal feature of the current frame. In a signal modification method for implementation into a technique for digitally encoding a sound signal, the sound signal is divided into a series of successive frames, each frame of the sound signal is partitioned into a plurality of signal segments, and at least a part of the signal segments of the frame are warped while constraining the warped signal segments inside the frame. For searching pitch pulses in a sound signal, a residual signal is produced by filtering the sound signal through a linear prediction analysis filter, a weighted sound signal is produced by processing the sound signal through a weighting filter, the weighted sound signal being indicative of signal periodicity, a synthesized weighted sound signal is produced by filtering a synthesized speech signal produced during a last subframe of a previous frame of the sound signal through the weighting filter, a last pitch pulse of the sound signal of the previous frame is located from the residual signal, a pitch pulse prototype of given length is extracted around the position of the last pitch pulse of the sound signal of the previous frame using the synthesized weighted sound signal, and the pitch pulses are located in a current frame using the pitch pulse prototype.

6. 发明专利

BR0214920A 未知
公开(公告)号：BR0214920A
公开(公告)日：2004-12-21
申请号：BR0214920
申请日：2002-12-13
申请人： VOICEAGE CORP
发明人： TAMMI MIKKO , JELINEK MILAN , LAFLAMME CLAUDE , RUOPPILA VESA
IPC分类号： G10L19/12 , G10L19/08
摘要： For determining a long-term-prediction delay parameter characterizing a long term prediction in a technique using signal modification for digitally encoding a sound signal, the sound signal is divided into a series of successive frames, a feature of the sound signal is located in a previous frame, a corresponding feature of the sound signal is located in a current frame, and the long-term-prediction delay parameter is determined for the current frame while mapping, with the long term prediction, the signal feature of the previous frame with the corresponding signal feature of the current frame. In a signal modification method for implementation into a technique for digitally encoding a sound signal, the sound signal is divided into a series of successive frames, each frame of the sound signal is partitioned into a plurality of signal segments, and at least a part of the signal segments of the frame are warped while constraining the warped signal segments inside the frame. For searching pitch pulses in a sound signal, a residual signal is produced by filtering the sound signal through a linear prediction analysis filter, a weighted sound signal is produced by processing the sound signal through a weighting filter, the weighted sound signal being indicative of signal periodicity, a synthesized weighted sound signal is produced by filtering a synthesized speech signal produced during a last subframe of a previous frame of the sound signal through the weighting filter, a last pitch pulse of the sound signal of the previous frame is located from the residual signal, a pitch pulse prototype of given length is extracted around the position of the last pitch pulse of the sound signal of the previous frame using the synthesized weighted sound signal, and the pitch pulses are located in a current frame using the pitch pulse prototype.

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