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1. 发明授权

US07031926B2 Spectral parameter substitution for the frame error concealment in a speech decoder 有权
公开(公告)号：US07031926B2
公开(公告)日：2006-04-18
申请号：US09918300
申请日：2001-07-30
申请人： Jari Mäkinen , Hannu Mikkola , Janne Vainio , Jani Rotola-Pukkila
发明人： Jari Mäkinen , Hannu Mikkola , Janne Vainio , Jani Rotola-Pukkila
IPC分类号： G10L19/00
CPC分类号： G10L19/005 , G10L19/06 , G10L25/93
摘要： A method for use by a speech decoder in handling bad frames received over a communications channel a method in which the effects of bad frames are concealed by replacing the values of the spectral parameters of the bad frames (a bad frame being either a corrupted frame or a lost frame) with values based on an at least partly adaptive mean of recently received good frames, but in case of a corrupted frame (as opposed to a lost frame), using the bad frame itself if the bad frame meets a predetermined criterion. The aim of concealment is to find the most suitable parameters for the bad frame so that subjective quality of the synthesized speech is as high as possible.

2. 发明授权

US07529673B2 Spectral parameter substitution for the frame error concealment in a speech decoder 有权
公开(公告)号：US07529673B2
公开(公告)日：2009-05-05
申请号：US11402220
申请日：2006-04-10
申请人： Jari Mäkinen , Hannu Mikkola , Janne Vainio , Jani Rotola-Pukkila
发明人： Jari Mäkinen , Hannu Mikkola , Janne Vainio , Jani Rotola-Pukkila
IPC分类号： G10L19/00
CPC分类号： G10L19/005 , G10L19/06 , G10L25/93
摘要： A method for use by a speech decoder in handling bad frames received over a communications channel a method in which the effects of bad frames are concealed by replacing the values of the spectral parameters of the bad frames (a bad frame being either a corrupted frame or a lost frame) with values based on an at least partly adaptive mean of recently received good frames, but in case of a corrupted frame (as opposed to a lost frame), using the bad frame itself if the bad frame meets a predetermined criterion. The aim of concealment is to find the most suitable parameters for the bad frame so that subjective quality of the synthesized speech is as high as possible.

3. 发明授权

US06968309B1 Method and system for speech frame error concealment in speech decoding 有权
标题翻译：语音解码中语音帧错误隐藏的方法和系统
公开(公告)号：US06968309B1
公开(公告)日：2005-11-22
申请号：US09702540
申请日：2000-10-31
申请人： Jari Mäkinen , Hannu Mikkola , Janne Vainio , Jani Rotola-Pukkila
发明人： Jari Mäkinen , Hannu Mikkola , Janne Vainio , Jani Rotola-Pukkila
IPC分类号： G10L19/005 , G10L13/00 , G10L19/04 , G11B20/18 , H03M7/36 , H04L1/00
CPC分类号： G10L19/005 , G10L25/93
摘要： A method and system for concealing errors in one or more bad frames in a speech sequence as part of an encoded bit stream received in a decoder. When the speech sequence is voiced, the LTP-parameters in the bad frames are replaced by the corresponding parameters in the last frame. When the speech sequence is unvoiced, the LTP-parameters in the bad frames are replaced by values calculated based on the LTP history along with an adaptively-limited random term.
摘要翻译：一种用于在语音序列中隐藏一个或多个坏帧中的错误的方法和系统，作为在解码器中接收的编码比特流的一部分。当语音序列发声时，坏帧中的LTP参数被最后一帧中的相应参数所取代。当语音序列是清音时，坏帧中的LTP参数被替换为基于LTP历史计算的值以及自适应限制的随机项。

4. 发明授权

US06782367B2 Method and arrangement for changing source signal bandwidth in a telecommunication connection with multiple bandwidth capability 有权
标题翻译：用于在具有多个带宽能力的电信连接中改变源信号带宽的方法和装置
公开(公告)号：US06782367B2
公开(公告)日：2004-08-24
申请号：US09850889
申请日：2001-05-08
申请人： Janne Vainio , Hannu Mikkola , Jani Rotola-Pukkila
发明人： Janne Vainio , Hannu Mikkola , Jani Rotola-Pukkila
IPC分类号： G10L2104
CPC分类号： G10L19/18
摘要： A speech encoding or decoding arrangement (711, 721, 811, 821) comprises a speech signal input and a multiple mode speech encoder (402) or decoder (411) for encoding or decoding speech signals coupled to the speech signal input selectabily with a first encoding or decoding mode associated with a first bandwidth or a second encoding or decoding mode associated with a second bandwidth. It comprises a soft bandwidth switching block (401, 412, 500) with an input (IN) and an output (OUT). In an encoding arrangement the input (IN) is coupled to the speech signal input and the output (OUT) is coupled to the multiple mode speech encoder (402). In a decoding arrangement the input (IN) is coupled to the multiple mode speech decoder (411) and the output (OUT) is the output of the decoding arrangement. The soft bandwidth switching block (401, 412, 500) is arranged to gradually change the bandwidth of a speech signal coupled to the multiple mode speech encoder or decoder as a response to an instruction for changing speech signal bandwidth (421).
摘要翻译：语音编码或解码装置（711,721,811,821）包括语音信号输入和多模式语音编码器（402）或解码器（411），用于对与语音信号输入耦合的语音信号进行编码或解码以选择性地与第一与第一带宽相关联的编码或解码模式或与第二带宽相关联的第二编码或解码模式。它包括具有输入（IN）和输出（OUT）的软带宽切换块（401,412,500）。在编码装置中，输入（IN）耦合到语音信号输入，输出（OUT）耦合到多模式语音编码器（402）。在解码装置中，输入（IN）耦合到多模式语音解码器（411），输出（OUT）是解码装置的输出。软带宽切换块（401,412,500）被布置为作为对用于改变语音信号带宽的指令的响应逐渐改变耦合到多模式语音编码器或解码器的语音信号的带宽（421）。

5. 发明授权

US07483830B2 Speech decoder and a method for decoding speech 有权
标题翻译：语音解码器和语音解码方法
公开(公告)号：US07483830B2
公开(公告)日：2009-01-27
申请号：US09797115
申请日：2001-03-01
申请人： Jani Rotola-Pukkila , Janne Vainio , Hannu Mikkola
发明人： Jani Rotola-Pukkila , Janne Vainio , Hannu Mikkola
IPC分类号： G10L19/04
CPC分类号： G10L19/16 , G10L19/0212
摘要： A speech decoder comprises a decoder (103) for converting a linear prediction encoded speech signal into a first sample stream having a first sampling rate and representing a first frequency band. Additionally it comprises a vocoder (105) for converting an input signal into a second sample stream having a second sampling rate and representing a second frequency band, and combination means (107) for combining the first and second sample streams in processed form. It comprises also means (301) for generating a second linear prediction filter, to be used by the vocoder (105) on the second frequency band, on the basis of a first linear prediction filter used by the decoder (103) on the first frequency band. Extrapolation through an infinite impulse response filter is the preferable method of generating the second linear prediction filter.
摘要翻译：语音解码器包括用于将线性预测编码语音信号转换为具有第一采样率并表示第一频带的第一采样流的解码器（103）。另外，它包括用于将输入信号转换为具有第二采样率并表示第二频带的第二采样流的声码器（105），以及用于以处理形式组合第一和第二采样流的组合装置（107）。它还包括用于产生由第二频带上的声码器（105）使用的第二线性预测滤波器的装置（301），该第二线性预测滤波器基于第一频率由解码器（103）使用的第一线性预测滤波器带。通过无限脉冲响应滤波器的外推是产生第二线性预测滤波器的优选方法。

6. 发明授权

US06981202B2 Method and system for allocating convolutional encoded bits into symbols before modulation for wireless communication 有权
标题翻译：用于在无线通信调制之前将卷积编码比特分配成符号的方法和系统
公开(公告)号：US06981202B2
公开(公告)日：2005-12-27
申请号：US10040885
申请日：2002-01-02
申请人： Hannu Mikkola , Janne Vainio , Jani Rotola-Pukkila
发明人： Hannu Mikkola , Janne Vainio , Jani Rotola-Pukkila
IPC分类号： H03M13/29 , H03M13/00 , H03M13/23 , H03M13/27 , H03M13/35 , H04L1/00 , H03M13/03 , G01R31/28
CPC分类号： H04L1/0068 , H03M13/23 , H03M13/27 , H03M13/35 , H04L1/0059 , H04L1/0071 , H04L1/0083
摘要： A method and corresponding apparatus for encoding a sequence of bits for transmission as symbols, some of the bit positions of the symbols having a higher bit error rate than other bit positions. A plurality of sequences of bits is provided using a convolutional encoder, in response to a sequence of input bits, each sequence of bits being defined by a predetermined generator polynomial having a predetermined level of sensitivity to puncturing. Then the bits of each sequence of bits are mapped to symbol positions based on the level of sensitivity of the generator polynomial defining the sequence of bits. With interleaving, the mapping of bits of each sequence of bits to symbol positions can precede a symbol interleaving step, or it can follow a bit interleaving step.
摘要翻译：一种用于将用于传输的比特序列编码为符号的方法和相应的装置，所述符号的一些比特位置具有比其他比特位置更高的比特错误率。使用卷积编码器提供多个比特序列，响应于输入比特序列，每个比特序列由具有对穿孔的预定灵敏度水平的预定生成多项式定义。然后，基于定义比特序列的生成多项式的灵敏度级别，将每个比特序列的比特映射到符号位置。通过交织，每个比特序列的比特映射到符号位置可以在符号交织步骤之前，或者可以跟随比特交织步骤。

7. 发明授权

US06658064B1 Method for transmitting background noise information in data transmission in data frames 有权
标题翻译：在数据帧中数据传输中发送背景噪声信息的方法
公开(公告)号：US06658064B1
公开(公告)日：2003-12-02
申请号：US09387369
申请日：1999-08-31
申请人： Jani Rotola-Pukkila , Hannu Mikkola , Pekka Kapanen , Janne Vainio
发明人： Jani Rotola-Pukkila , Hannu Mikkola , Pekka Kapanen , Janne Vainio
IPC分类号： G10L1106
CPC分类号： H04L1/0072 , H04L1/0071
摘要： The invention relates to a method for transmitting background noise information including a silence descriptor identifier and background noise parameters in a communication system in which the information to be transmitted is formed into data frames. The data frames are subjected to channel coding to form channel-coded frames. The channel-coded frames are interleaved to be transmitted in two or more data transmission frames, and information of two channel-coded frames is transmitted in each data transmission frame. A first silence descriptor frame is formed provided with the silence descriptor identifier. The first silence descriptor frame is subjected to channel coding to form a channel-coded silence descriptor frame. The channel-coded silence descriptor frame is transmitted in two or more data transmission frames, and at least one data transmission frame transmitting part of the channel-coded silence descriptor frame is also used to transmit at least the background noise parameters.
摘要翻译：本发明涉及一种用于在其中要发送的信息被形成为数据帧的通信系统中发送包括静音描述符标识符和背景噪声参数的背景噪声信息的方法。对数据帧进行信道编码以形成信道编码帧。信道编码帧被交织以在两个或更多个数据传输帧中发送，并且在每个数据传输帧中发送两个信道编码帧的信息。形成了具有静默描述符标识符的第一个静默描述符帧。对第一个静默描述符帧进行信道编码以形成信道编码的静默描述符帧。信道编码静音描述符帧在两个或多个数据传输帧中发送，并且至少一个数据传输帧发送部分信道编码静音描述符帧也用于至少发送背景噪声参数。

8. 发明授权

US06615169B1 High frequency enhancement layer coding in wideband speech codec 有权
标题翻译：宽带语音编解码器中的高频增强层编码
公开(公告)号：US06615169B1
公开(公告)日：2003-09-02
申请号：US09691440
申请日：2000-10-18
申请人： Pasi Ojala , Jani Rotola-Pukkila , Janne Vainio , Hannu Mikkola
发明人： Pasi Ojala , Jani Rotola-Pukkila , Janne Vainio , Hannu Mikkola
IPC分类号： G10L1902
CPC分类号： G10L19/012 , G10L21/0364 , G10L25/78
摘要： A speech coding method and device for encoding and decoding an input signal and providing synthesized speech, wherein the higher frequency components of the synthesized speech are achieved by high-pass filtering and coloring an artificial signal to provide a processed artificial signal. The processed artificial signal is scaled by a first scaling factor during the active speech periods of the input signal and a second scaling factor during the non-active speech periods, wherein the first scaling factor is characteristic of the higher frequency band of the input signal and the second scaling factor is characteristic of the lower frequency band of the input signal. In particular, the second scaling factor is estimated based on the lower frequency components of the synthesized speech and the coloring of the artificial signal is based on the linear predictive coding coefficients characteristic of the lower frequency of the input signal.
摘要翻译：一种用于对输入信号进行编码和解码并提供合成语音的语音编码方法和装置，其中通过对人造信号进行高通滤波和着色以提供经处理的人造信号来实现合成语音的较高频率分量。处理的人造信号在输入信号的有效语音周期期间由第一缩放因子缩放，在非活动语音周期期间被缩放，其中第一缩放因子是输入信号的较高频带的特征，第二比例因子是输入信号的较低频带的特征。特别地，基于合成语音的较低频率分量来估计第二缩放因子，并且人造信号的着色基于输入信号的较低频率的线性预测编码系数特性。

9. 发明授权

US07315814B2 Method and apparatus providing adaptive multi-rate speech coding 有权
标题翻译：提供自适应多速率语音编码的方法和装置
公开(公告)号：US07315814B2
公开(公告)日：2008-01-01
申请号：US10311657
申请日：2001-06-30
申请人： Janne Vainio , Hannu Mikkola , Jani Rotola-Pukkila
发明人： Janne Vainio , Hannu Mikkola , Jani Rotola-Pukkila
IPC分类号： G10L19/00
CPC分类号： G10L19/18 , H04L1/0014 , H04L1/0025
摘要： A wireless telecommunications system comprises a mobile station (MS) and a network. The mobile station has a multi-rate speech encoder which produces an encoded speech signal which is transmitted to the network. The network has a multi-rate speech decoder which decodes the encoded speech signal to produce a decoded speech signal. The network also comprises a signal analyser which measures speech characteristics of the decoded speech signal to produce speech characteristics information and an up-link mode control unit which receives the speech characteristics information and produces a mode command. The mode command is transmitted by the network to the mobile station where it is used to control the speech encoding bit rate of the multi-rate speech encoder.
摘要翻译：无线电信系统包括移动台（MS）和网络。移动台具有多速率语音编码器，其产生被发送到网络的编码语音信号。网络具有多速率语音解码器，其对编码的语音信号进行解码以产生解码的语音信号。网络还包括测量解码语音信号的语音特性以产生语音特征信息的信号分析器，以及接收语音特征信息并产生模式命令的上行链路模式控制单元。该模式命令由网络发送到移动站，在该移动站处，用于控制多速率语音编码器的语音编码比特率。

10. 发明申请

US20070239462A1 Spectral parameter substitution for the frame error concealment in a speech decoder 有权
标题翻译：语音解码器中帧错误隐藏的频谱参数替换
公开(公告)号：US20070239462A1
公开(公告)日：2007-10-11
申请号：US11402220
申请日：2006-04-10
申请人： Jari Makinen , Hannu Mikkola , Janne Vainio , Jani Rotola-Pukkila
发明人： Jari Makinen , Hannu Mikkola , Janne Vainio , Jani Rotola-Pukkila
IPC分类号： G10L19/00
CPC分类号： G10L19/005 , G10L19/06 , G10L25/93
摘要： A method for use by a speech decoder in handling bad frames received over a communications channel a method in which the effects of bad frames are concealed by replacing the values of the spectral parameters of the bad frames (a bad frame being either a corrupted frame or a lost frame) with values based on an at least partly adaptive mean of recently received good frames, but in case of a corrupted frame (as opposed to a lost frame), using the bad frame itself if the bad frame meets a predetermined criterion. The aim of concealment is to find the most suitable parameters for the bad frame so that subjective quality of the synthesized speech is as high as possible.
摘要翻译：语音解码器在处理通过通信信道接收的不良帧时使用的方法，其中通过将坏帧的频谱参数的值（坏帧是损坏的帧或被破坏的帧）来隐藏坏帧的影响的方法，丢失的帧），其值基于最近接收到的良好帧的至少部分自适应均值，但是在损坏的帧（与丢帧相对的情况下）中，如果坏帧满足预定标准，则使用坏帧本身。隐藏的目的是为坏帧找到最合适的参数，使合成语音的主观质量尽可能高。

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