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1. 发明授权

US07027518B2 Method and arrangement for providing optimal bit protection against transmission errors 有权
标题翻译：提供针对传输错误的最佳位保护的方法和装置
公开(公告)号：US07027518B2
公开(公告)日：2006-04-11
申请号：US10021748
申请日：2001-10-29
申请人： Hannu J. Mikkola , Janne Vainio , Jani Rotola-Pukkila
发明人： Hannu J. Mikkola , Janne Vainio , Jani Rotola-Pukkila
IPC分类号： H04L27/00 , H04B15/00
CPC分类号： H04L1/007 , H04L1/0043 , H04L1/0054 , H04L1/0059 , H04L1/0069 , H04L2001/0098
摘要： A method and arrangements are provided for transmitting frames of digital information over a wireless communication connection between a transmitter and a receiver. In the transmitter, a certain sequence of bits within each frame of digital information is convolutionally encoded and punctured before transmitting the frame over a wireless communication connection. The receiver decodes and depunctures the sequence of bits within each frame of digital information, that was convolutionally encoded and punctured, after receiving the frame over a wireless communication connection. The transmitter rearranges the sequence of bits within each frame of digital information that is to be convolutionally encoded and punctured, before convolutionally encoding and puncturing it. The rearranged order is one that has been found to produce, during the course of convolutionally encoding with a certain convolutional code and puncturing with a certain puncturing pattern, a convolutionally encoded and punctured sequence where the statistical probability of transmission errors exhibits a predefined behavior. In the receiver, the sequence of bits within each frame of digital information that was so rearranged in the transmitter is inversely rearranged so that the effect of said rearranging in the transmitter on the mutual order of the bits of the sequence is cancelled, after decoding and depuncturing the sequence of bits.
摘要翻译：提供了一种用于通过发射机和接收机之间的无线通信连接发送数字信息帧的方法和装置。在发射机中，在通过无线通信连接发送帧之前，对数字信息的每个帧内的某一比特序列进行卷积编码和打孔。在通过无线通信连接接收到帧之后，接收机对数字信息的每个帧内的比特序列进行解码和解码，该序列被卷积编码和打孔。在卷积编码和打孔之前，发射机重新排列将被卷积编码和打孔的数字信息的每帧内的比特序列。重新排列的顺序是在使用某种卷积码进行卷积编码和用某种打孔图案进行的打孔的过程中，已经被发现的顺序产生卷积编码和打孔的序列，其中传输错误的统计概率表现出预定义的行为。在接收机中，在发射机中如此重新排列的每个数字信息帧内的比特序列被反向重新排列，从而在解码之后消除发射机中所述重新排列在序列的比特的相互顺序上的影响，解码穿透位序列。

2. 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）。

3. 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.

4. 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。

5. 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。

6. 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。

7. 发明授权

US06606593B1 Methods for generating comfort noise during discontinuous transmission 有权
标题翻译：在不连续传输过程中产生舒适噪声的方法
公开(公告)号：US06606593B1
公开(公告)日：2003-08-12
申请号：US09371332
申请日：1999-08-10
申请人： Kari Jarvinen , Pekka Kapanen , Vesa Ruoppila , Jani Rotola-Pukkila
发明人： Kari Jarvinen , Pekka Kapanen , Vesa Ruoppila , Jani Rotola-Pukkila
IPC分类号： G10L1908
CPC分类号： G10L19/012
摘要： An improved method for generating comfort noise (CN) in a mobile terminal operating in a discontinuous transmission (DTX) mode. In one embodiment the invention provides an improved method for comfort noise generation, in which a random excitation is modified by a spectral control filter so that the frequency content of comfort noise and background noise become similar. In another embodiment the transmitter identifies speech coding parameters that are not representative of the actual background noise, and replaces the identified parameters with parameters having a median value. In this manner the non-representative parameters do not skew the result of an averaging operation.
摘要翻译：一种用于在以不连续传输（DTX）模式操作的移动终端中产生舒适噪声（CN）的改进方法。在一个实施例中，本发明提供了一种用于舒适噪声产生的改进方法，其中随机激励由频谱控制滤波器修改，使得舒适噪声和背景噪声的频率含量变得相似。在另一个实施例中，发射机识别不代表实际背景噪声的语音编码参数，并用具有中值的参数替换所识别的参数。以这种方式，非代表性参数不会使平均运算的结果偏斜。

8. 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。

9. 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.

10. 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。

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