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1. 发明申请

WO1988000754A1 METHOD AND SYSTEM FOR COMPRESSING SPEECH SIGNAL DATA 审中-公开
标题翻译：用于压缩语音信号数据的方法和系统
公开(公告)号：WO1988000754A1
公开(公告)日：1988-01-28
申请号：PCT/US1987001492
申请日：1987-06-25
申请人： NCR CORPORATION
发明人： NCR CORPORATION , JIBBE, Mahmoud, Khaled
IPC分类号： G10L09/18
CPC分类号： H03M7/46 , G10L19/00 , G10L25/00 , G10L25/78 , G10L25/90 , G10L25/93
摘要： A compression system and method operates upon a serial bit stream of speech encoded data by reading the data in fixed length frames. Each frame is classified by a detector (46) as to whether the frame represents voiced, unvoiced or a silence condition. For a voiced frame, a pitch period (IP) is determined by a pitch detector (47). The bits of the voiced frame are then compared with a reference pitch pattern (RP), so as to detect repetition. When repetition is detected, a repetition count (N), the pitch period (IP), and the reference pitch pattern (RP) bits are stored in a storage device (50) ready for transmission. The compressed data is reconstructed by utilizing a decompressor which interprets the stored information and causes reinsertion of the repetitions.
摘要翻译：压缩系统和方法通过读取固定长度帧中的数据对语音编码数据的串行比特流进行操作。关于帧是否表示有声，无声或静音状态，每个帧由检测器（46）分类。对于有声帧，音调周期（IP）由音调检测器（47）确定。然后将有声帧的比特与参考音调模式（RP）进行比较，以便检测重复。当检测到重复时，重复计数（N），音调周期（IP）和参考音调模式（RP）位被存储在准备传输的存储装置（50）中。压缩数据通过使用解压缩器来重构，该解压缩器解释所存储的信息并导致重新插入重复。

2. 发明申请

WO1994029851A1 TRANSMISSION ERROR CONCEALMENT 审中-公开
标题翻译：传输错误保护
公开(公告)号：WO1994029851A1
公开(公告)日：1994-12-22
申请号：PCT/SE1994000533
申请日：1994-06-02
申请人： TELEFONAKTIEBOLAGET LM ERICSSON
发明人： TELEFONAKTIEBOLAGET LM ERICSSON , WIGREN, Karl, Torbjörn , BERGSTRÖM, Rolf, Anders
IPC分类号： G10L09/18
CPC分类号： G10L19/005 , G10L25/78 , H04L1/0061
摘要： A receiver in a frame based radio communication system includes a speech decoder of the source-filter type which is controlled by means (20, 22, 24) including internal state variables updated on a frame by frame basis for modifying received filter parameters representing background sounds transmitted over a communication channel. The receiver includes means (12, 13, 14) for detecting frames containing transmission errors, means (16) for deciding whether a frame in which transmission errors have been detected is acceptable, and means (18) for concealing the detected transmission errors by restricting updating of at least one of the internal state variables if the detected frame is declared non-acceptable by the deciding means.
摘要翻译：基于帧的无线电通信系统中的接收机包括源滤波器类型的语音解码器，该语音解码器由装置（20,22,24）控制，该装置包括逐帧更新的内部状态变量，用于修改表示背景声音的接收的滤波器参数通过通信信道传输。接收机包括用于检测包含传输错误的帧的装置（12,13,14），用于判定其中检测到传输错误的帧是否可接受的装置（16）以及用于通过限制来隐藏检测到的传输错误的装置（18）如果所述检测到的帧被所述决定装置声明为不可接受，则更新所述内部状态变量中的至少一个。

3. 发明申请

WO1997041549A1 ENCODING MODE CONTROL METHOD AND DECODING MODE DETERMINING APPARATUS 审中-公开
标题翻译：编码模式控制方法和解码模式确定装置
公开(公告)号：WO1997041549A1
公开(公告)日：1997-11-06
申请号：PCT/SE1997000616
申请日：1997-04-11
申请人： TELEFONAKTIEBOLAGET LM ERICSSON
发明人： TELEFONAKTIEBOLAGET LM ERICSSON , NYSTRÖM, Johan , MINDE, Tor, Björn , JANSSON, Fredrik
IPC分类号： G10L09/18
CPC分类号： H04W52/265 , H04L1/0009 , H04L1/0014 , H04L1/0025 , H04L1/0032 , H04L1/0038 , H04L1/007 , H04W24/10 , H04W28/22 , H04W52/267
摘要： In a digital cellular radio communication system a base station selects (120) a speech/channel encoding mode based on measurements (110) of the local radio environment. The mobile station determines (140) the selected mode by trial decoding possible modes to find the most probable mode and uses (170) the same mode for transmission to the base station on the return link. The coding gain/loss obtained by this mode switching may be used to adjust the output power of transmitters, thereby reducing the overall interference level in the system.
摘要翻译：在数字蜂窝无线电通信系统中，基站基于本地无线电环境的测量（110）来选择（120）语音/信道编码模式。移动台通过尝试解码可能的模式来确定（140）所选择的模式，以找到最可能的模式，并使用（170）相同的模式来传送到返回链路上的基站。通过该模式切换获得的编码增益/损耗可以用于调整发射机的输出功率，从而降低系统中的总体干扰电平。

4. 发明申请

WO1988008606A1 METHOD AND APPARATUS FOR DATA TRANSFER 审中-公开
标题翻译：用于数据传输的方法和设备
公开(公告)号：WO1988008606A1
公开(公告)日：1988-11-03
申请号：PCT/JP1988000431
申请日：1988-04-28
申请人： FUJITSU TEN LIMITED , SAKO, Kazuya , NAGAMI, Masaaki , CHONO, Takeshi , FUJIMOTO, Shoji , YASUI, Katsumaro
发明人： FUJITSU TEN LIMITED
IPC分类号： G10L09/18
CPC分类号： G06F13/38 , G06F5/065 , G06F2207/3824
摘要： An apparatus having a mantissa part register and an index part register which transfers floating point data only is now permitted to input and output fixed point data, too. The registers are connected to individual inputs and outputs and also receive a common clock signal. Depending on the input and output data format the registers are used separately or in combination. With the registers being separately used, increased kinds of input and output data can be processed simultaneously. In the event of a data length longer than the register length, a combination of registers can be used to accommodate the data.
摘要翻译：具有部分尾数寄存器和仅执行浮点数据传送的部分索引寄存器的装置现在也可以执行定点数据输入和检索。寄存器连接到单独的输入和输出，并且还接收公共时钟信号。根据输入和输出数据的格式，寄存器可以单独使用或组合使用。当单独使用寄存器时，可以同时处理不断增加的输入和输出数据类型。如果数据范围大于寄存器范围，则可以使用寄存器组合来容纳数据。

5. 发明申请

WO1996011468A1 VECTOR ENCODING METHOD AND ENCODER/DECODER USING THE METHOD 审中-公开
标题翻译：使用方法的矢量编码方法和编码器/解码器
公开(公告)号：WO1996011468A1
公开(公告)日：1996-04-18
申请号：PCT/JP1995001989
申请日：1995-09-29
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION , KATAOKA, Akitoshi , IKEDO, Jotaro
发明人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
IPC分类号： G10L09/18
CPC分类号： H03M7/02 , G06T9/008 , G10L19/00 , G10L19/005 , G10L2019/0005 , G10L2019/0013 , G10L2019/0014 , H03M7/3082
摘要： Representative vectors z1j, z2j are selected from code books CB1, CB2, respectively, and are multiplied by weighting factors w1, w2 having the same number of dimensions as the representative vectors by multipliers 21, 22 to generate weighted representative vectors z1iw1, z2jw2, respectively. They are then combined in a summing circuit portion 3, and the combination of z1i, z2j is selected by a control circuit so that the distance between the resultant vector yij and an input signal vector X becomes minimal. The weighting factor vectors w1, w2 have their respective factors at mutually different element positions, and are selected so that the sum of diagonal matrixes having the elements of these vectors becomes some multiples of a unit matrix.
摘要翻译：代表矢量z1j，z2j分别从码本CB1，CB2中选择，并且乘以与乘法器21,22相同的与代表矢量相同的维数的加权因子w1，w2，分别产生加权代表矢量z1i1，z2jw2 。然后将它们组合在求和电路部分3中，并且通过控制电路选择z1i，z2j的组合，使得所得到的矢量y ij与输入信号矢量X之间的距离变得最小。加权因子向量w1，w2在各自的元素位置具有各自的因子，并且被选择为使得具有这些向量的元素的对角矩阵的和变为单位矩阵的某个倍数。

6. 发明申请

WO1994029850A1 LOST FRAME CONCEALMENT 审中-公开
标题翻译：失物招领
公开(公告)号：WO1994029850A1
公开(公告)日：1994-12-22
申请号：PCT/SE1994000532
申请日：1994-06-02
申请人： TELEFONAKTIEBOLAGET LM ERICSSON
发明人： TELEFONAKTIEBOLAGET LM ERICSSON , TORBJÖRN, Wigren, Karl , ANDERS, Bergström, Rolf
IPC分类号： G10L09/18
CPC分类号： G10L19/005 , G10L25/78 , H04L1/0045
摘要： A receiver in a frame based radio communication system includes a speech decoder of the source-filter type which is controlled by means (20, 22, 24) including internal state variables updated on a frame by frame basis for modifying received filter defining parameters representing background sounds transmitted over a communication channel. The receiver includes means (14) for detecting frame loss and means (18) for concealing the effects of frame loss by restricting updating of at least one of the internal state variables.
摘要翻译：基于帧的无线电通信系统中的接收机包括源滤波器类型的语音解码器，该语音解码器由装置（20,22,24）控制，该装置包括逐帧更新的内部状态变量，用于修改表示背景的接收的过滤器定义参数通过通信信道发送的声音。接收机包括用于检测帧丢失的装置（14）和用于通过限制至少一个内部状态变量的更新来隐藏帧丢失的影响的装置（18）。

7. 发明申请

WO1992005541A1 VOICE CODING SYSTEM 审中-公开
标题翻译：语音编码系统
公开(公告)号：WO1992005541A1
公开(公告)日：1992-04-02
申请号：PCT/JP1991001235
申请日：1991-09-17
申请人： FUJITSU LIMITED , TANIGUCHI, Tomohiko , JOHNSON, Mark , OHTA, Yasuji , KURIHARA, Hideaki , TANAKA, Yoshinori , SAKAI, Yoshihiro
发明人： FUJITSU LIMITED
IPC分类号： G10L09/18
CPC分类号： G10L19/12 , G10L25/06 , G10L2019/0002 , G10L2019/0007 , G10L2019/0013 , G10L2019/0014
摘要： A voice coding system which finds by evaluation operation a code vector that minimizes the error between an input voice signal and a reproduced signal obtained through a linear estimation synthesis filtering simulating the vocal tract characteristics for each of the code vectors successively read out from a code book that stores a plurality of noise sequences as code vectors (C0, C1, C2 ....), and then encodes the input voice signal by using a code which specifies a code vector. The code book is constituted as a delta vector code book (11) that stores the initial vector (C0) and a plurality of delta vectors ( DELTA Ci) which consist of differential vectors among the neighboring code vectors. Operation means for the evaluation operation is provided with a cyclic adder means (20) which accumulates delta vectors for virtual reproduction of said code vectors (C0, C1, C2, ....).

8. 发明申请

WO1998000837A1 AUDIO SIGNAL CODING AND DECODING METHODS AND AUDIO SIGNAL CODER AND DECODER 审中-公开
标题翻译：音频信号编码和解码方法和音频信号编码器和解码器
公开(公告)号：WO1998000837A1
公开(公告)日：1998-01-08
申请号：PCT/JP1997002271
申请日：1997-07-01
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. , NORIMATSU, Takeshi , MIYASAKA, Shuji , MAKATO, Yoshihisa , TSUSHIMA, Mineo , ISHIKAWA, Tomokazu
发明人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
IPC分类号： G10L09/18
CPC分类号： G10L19/038 , G10L2019/0005
摘要： In order to code an audio signal by using a vector quantitization method and thereby reduce the quantity of information, the coding is done by a coding unit (1). When this operation is carried out, an audio code having a minimum distance among the auditive distances between sub-vectors produced by dividing an input vector and audio codes in a transmission-side code book 29003 is selected. A portion corresponding to an element of a sub-vector of a high auditive importance is handled in an audio code selecting unit 2900102 while neglecting the positive and negative codes indicating their phase information, and subjected to comparative retrieval with respect to audio codes in a transmission-side code book 29003, and phase information corresponding to an element portion of the sub-vector extracted separately in a phase information extraction unit 2900107 is added to the result obtained, and the result is outputted as a code index. Thus, the calculation amount in the code retrieval of vector quantitization and the number of codes in the code book are decreased without lowering the quality of an audio signal auditively during decoding operation.
摘要翻译：为了通过使用矢量量化方法对音频信号进行编码，从而减少信息量，由编码单元（1）进行编码。当执行该操作时，选择在发送侧代码簿29003中通过划分输入向量和音频代码产生的子向量之间的最小距离之间的音频代码。在音频代码选择单元2900102中处理与高听觉重要性的子向量的元素相对应的部分，同时忽略指示其相位信息的正码和负码，并且相对于传输中的音频码进行比较检索边代码簿29003，并将与在相位信息提取单元2900107中单独提取的子矢量的元素部分相对应的相位信息加到获得的结果中，并将该结果作为代码索引输出。因此，在解码操作期间，降低矢量量化的代码检索中的计算量和码本中的代码数量而不降低音频信号的质量。

9. 发明申请

WO1997002561A1 A METHOD TO EVALUATE THE HANGOVER PERIOD IN A SPEECH DECODER IN DISCONTINUOUS TRANSMISSION, AND A SPEECH ENCODER AND A TRANSCEIVER 审中-公开
标题翻译：评估不连续传输中的语音解码器中的过时期的方法，以及语音编码器和收发器
公开(公告)号：WO1997002561A1
公开(公告)日：1997-01-23
申请号：PCT/FI1996000369
申请日：1996-06-26
申请人： NOKIA MOBILE PHONES LTD. , KAPANEN, Pekka
发明人： NOKIA MOBILE PHONES LTD.
IPC分类号： G10L09/18
CPC分类号： H04B14/04
摘要： The invention relates to a method for mutual synchronization of the transmitter's speech encoder and the receiver's speech decoder in a communication system utilizing discontinuous transmitter between the transmitter and the receiver. The discontinuous transmission comprises temporally sequential frame periods of which some periods will contain transmitted frames and some periods contain no transmission; whereby the method contains steps to generate information transmission periods (200) comprising at least one frame and containing information given by a user to said transmitter device, and silence periods (208, 209) having a length of at least one frame period and containing other information than that given by the user. The discontinuous transmission further comprises an irregularly occurring period (T) comprising at least one frame between the information transmission period (200) and the next silence period (208, 209), the irregular period forming a hangover period to determine the information relating to the silence period. In the method according to the invention the number of frame periods is counted in the receiver until a certain moment; the beginning of said silence period (208, 209) is detected; and based on said counted number of frame periods and the beginning of the silence period (208, 209) it is decided whether or not there is a hangover period (T) of said type between said information transmission period (200) and the silence period (208) following the information transmission period.
摘要翻译：本发明涉及一种在发射机和接收机之间使用不连续发射机的通信系统中发射机的语音编码器和接收机的语音解码器的相互同步的方法。不连续传输包括时间上连续的帧周期，其中一些周期将包含传输的帧，并且一些周期不包含传输; 由此该方法包括生成包括至少一个帧并且包含由用户给予所述发射机设备的信息的信息传输周期（200）的步骤，以及具有至少一个帧周期的长度并包含其他帧的静默周期（208,209）信息比用户给出的信息。不连续传输还包括在信息传输周期（200）和下一沉默期（208,209）之间包括至少一个帧的不规则发生周期（T），形成宿醉期的不规则周期以确定与沉默期在根据本发明的方法中，在接收机中计数帧周期的数量直到某一时刻; 检测到所述静默期（208,209）的开始; 并且基于所述计数的帧周期数和静默期的开始（208,209），判定在所述信息发送期间（200）和所述静默期间（200）之间是否存在所述类型的中止期间（T）（208）。

10. 发明申请

WO1996034383A1 METHOD AND APPARATUS FOR LOW RATE CODING AND DECODING 审中-公开
标题翻译：低速编码和解码的方法和装置
公开(公告)号：WO1996034383A1
公开(公告)日：1996-10-31
申请号：PCT/US1996003235
申请日：1996-03-07
申请人： MOTOROLA INC. , ASHLEY, James, Patrick , PENG, Weimin , ZHANG, Peng
发明人： MOTOROLA INC.
IPC分类号： G10L09/18
CPC分类号： G10L19/038
摘要： A system for low rate coding or decoding includes the use of a mode indicator in the coded signal to indicate whether prequantizer (i.e., coarse) or quantizer (i.e., fine) information is being sent. In a transmitter (300) embodiment both a prequantizer (212) and a restricted quantizer (214) search is performed of predefined prequantizer ("P") and quantizer ("V") codewords, respectively, to determine the codewords with the least residual energy. The index of the P or V codeword with the least residual is then determined (220), and this index is transmitted along with an appropriate P or V mode indicator. In a receiver (330) embodiment, the mode indicator is used to set the decoder (e.g., a vocoder) (350) to form a signal replica from a P codeword (determined from the transmitted index), or from a V codeword (from the transmitted V index) and previously determined P codeword (e.g., the centroid of the V codeword).
摘要翻译：用于低速率编码或解码的系统包括在编码信号中使用模式指示符来指示是否正在发送预量化器（即，粗略）或量化器（即，精细）信息。在发射机（300）实施例中，分别对预定义的量化器（“P”）和量化器（“V”）码字执行预量化器（212）和限制量化器（214）搜索，以确定具有最小残差的码字能源。然后确定具有最小残差的P或V码字的索引（220），并且该索引与适当的P或V模式指示符一起发送。在接收机（330）实施例中，模式指示符用于设置解码器（例如，声码器）（350）以从P码字（从传送的索引确定）或从V码字（来自发送的V索引）和先前确定的P码字（例如，V码字的质心）。

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