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1. 发明授权

US06484142B1 Encoder using Huffman codes 有权
标题翻译：编码器使用霍夫曼码
公开(公告)号：US06484142B1
公开(公告)日：2002-11-19
申请号：US09551796
申请日：2000-04-18
申请人： Shuji Miyasaka , Takeshi Norimatsu , Mineo Tsushima , Tomokazu Ishikawa , Yoshiaki Sawada
发明人： Shuji Miyasaka , Takeshi Norimatsu , Mineo Tsushima , Tomokazu Ishikawa , Yoshiaki Sawada
IPC分类号： G10L1914
CPC分类号： H03M7/42
摘要： An encoder of the present invention includes: G storage sections for storing G groups of data; a selection section for selecting one of H Huffman codebooks having codebook numbers for each of the groups of data; G encoding sections Huffman-encoding the G groups of data by using the selected Huffman codebook; and an encoding section for encoding the codebook number of each Huffman codebook selected. The selection section includes a calculation section for calculating a code length and a control section for selecting one of the Huffman codebooks. When the Huffman codebook selected is an unsigned codebook, a number of bits required for sign information has previously been added to the calculated code length.
摘要翻译：本发明的编码器包括：G存储部分，用于存储G组数据; 选择部分，用于选择具有每组数据的码本号码的霍夫曼代码簿之一; G编码部分通过使用所选的霍夫曼码本对G组数据进行霍夫曼编码; 以及编码部，用于编码所选择的每个霍夫曼码本的码本号。选择部分包括用于计算代码长度的计算部分和用于选择霍夫曼码本之一的控制部分。当选择的霍夫曼代码簿是无符号码本时，已经将计算的代码长度添加到符号信息所需的位数。

2. 发明授权

US07243061B2 Multistage inverse quantization having a plurality of frequency bands 有权
标题翻译：具有多个频带的多级逆量化
公开(公告)号：US07243061B2
公开(公告)日：2007-07-10
申请号：US10954589
申请日：2004-10-01
申请人： Takeshi Norimatsu , Shuji Miyasaka , Yoshihisa Nakatoh , Mineo Tsushima , Tomokazu Ishikawa
发明人： Takeshi Norimatsu , Shuji Miyasaka , Yoshihisa Nakatoh , Mineo Tsushima , Tomokazu Ishikawa
IPC分类号： G10L19/02
CPC分类号： G10L19/032 , G10L19/0212 , G10L19/038
摘要： With respect to audio signal coding and decoding apparatuses, there is provided a coding apparatus that enables a decoding apparatus to reproduce an audio signal even through it does not use all of data from the coding apparatus, and a decoding apparatus corresponding to the coding apparatus. A quantization unit constituting a coding apparatus includes a first sub-quantization unit comprising sub-quantization units for low-band, intermediate-band, and high-band; a second sub-quantization unit for quantizing quantization errors from the first sub-quantization unit; and a third sub-quantization unit for quantizing quantization errors which have been processed by the first sub-quantization unit and the second sub-quantization unit.
摘要翻译：对于音频信号编码和解码装置，提供了一种编码装置，即使通过编码装置不使用全部数据，能够使解码装置再现音频信号，也可以使用与编码装置对应的解码装置。构成编码装置的量化单元包括：第一子量化单元，包括用于低频带，中频带和高频带的子量化单元; 第二子量化单元，用于量化来自第一子量化单元的量化误差; 以及用于量化由第一子量化单元和第二子量化单元处理的量化误差的第三子量化单元。

3. 发明授权

US06826526B1 AUDIO SIGNAL CODING METHOD, DECODING METHOD, AUDIO SIGNAL CODING APPARATUS, AND DECODING APPARATUS WHERE FIRST VECTOR QUANTIZATION IS PERFORMED ON A SIGNAL AND SECOND VECTOR QUANTIZATION IS PERFORMED ON AN ERROR COMPONENT RESULTING FROM THE FIRST VECTOR QUANTIZATION 有权
标题翻译：音频信号编码方法，解码方法，音频信号编码装置和解码装置，其中第一个矢量量化在信号上执行，第二矢量量化在由第一矢量量化得到的错误组件上执行
公开(公告)号：US06826526B1
公开(公告)日：2004-11-30
申请号：US09171266
申请日：1999-07-23
申请人： Takeshi Norimatsu , Shuji Miyasaka , Yoshihisa Nakato , Mineo Tsushima , Tomokazu Ishikawa
发明人： Takeshi Norimatsu , Shuji Miyasaka , Yoshihisa Nakato , Mineo Tsushima , Tomokazu Ishikawa
IPC分类号： G10L1900
CPC分类号： G10L19/038 , G10L2019/0005
摘要： A coding unit codes an audio signal by using a vector quantization method to reduce the quantity of data. An audio code having a minimum distance among auditive distances between sub-vectors produced by dividing an input vector and audio codes in a transmission-side code book is selected. A portion corresponding to an element of a sub-vector having a high auditive importance is handled in an audio code selecting unit while neglecting the codes indicating phase information and subjected to comparative retrieval with respect to audio codes in a transmission-side code book. Extracted phase information corresponding to an element portion of the sub-vector is added to the result obtained and output as a code index. Thereby, the calculation amount in the code retrieval of vector quantization and the number of codes in the code book are decreased without lowering the quality of an audio signal.
摘要翻译：编码单元通过使用矢量量化方法对音频信号进行编码以减少数据量。选择具有通过划分输入向量和发送侧码本中的音频码产生的子向量之间的听觉距离之间的最小距离的音频码。在音频代码选择单元中处理对应于具有高听觉重要性的子向量的元素的部分，同时忽略指示相位信息的代码，并且对发送侧代码簿中的音频代码进行比较检索。对应于子向量的元素部分的提取相位信息被添加到获得的结果并作为代码索引输出。由此，在不降低音频信号的质量的情况下，减少矢量量化的代码检索和码本中的代码数量的计算量。

4. 发明授权

US06898615B2 Signal processing unit and signal processing method including using an exponent part and a mantissa part for power generation 失效
标题翻译：信号处理单元和信号处理方法，包括使用指数部分和尾数部分进行发电
公开(公告)号：US06898615B2
公开(公告)日：2005-05-24
申请号：US09909971
申请日：2001-07-23
申请人： Shuji Miyasaka , Takeshi Norimatsu , Mineo Tsushima , Tomokazu Ishikawa , Yoshiaki Sawada
发明人： Shuji Miyasaka , Takeshi Norimatsu , Mineo Tsushima , Tomokazu Ishikawa , Yoshiaki Sawada
IPC分类号： G06F1/03 , G06F7/556 , G06F1/02
CPC分类号： G06F1/0307 , G06F7/483 , G06F7/556
摘要： An exponent part extraction section extracts a bit series from the exponent part of an inputted floating point data. A mantissa part extraction section extracts the uppermost K bits from the mantissa part of the floating point data. A first conversion section inputs the output e from the exponent part extraction section and outputs the value of a function X(e) thereof. A second conversion section inputs the output f from the mantissa part extraction section and outputs the value of a function Y(f) thereof. A multiplier section multiplies together these values. By setting suitable tables in advance in the first and the second conversion sections, the calculation of the v^p for an item v of floating point data can be performed.
摘要翻译：指数部分提取部分从输入的浮点数据的指数部分中提取比特序列。尾数部分提取部分从浮点数据的尾数部分提取最上面的K位。第一转换部分输入来自指数部分提取部分的输出e，并输出其函数X（e）的值。第二转换部分输入来自尾数部分提取部分的输出f并输出其函数Y（f）的值。乘数部分将这些值相乘。通过预先在第一和第二转换部分中设置合适的表，可以执行浮点数据的项目v的v ^ p的计算。

5. 发明申请

US20050060147A1 Multistage inverse quantization having the plurality of frequency bands 有权
标题翻译：具有多个频带的多级逆量化
公开(公告)号：US20050060147A1
公开(公告)日：2005-03-17
申请号：US10954589
申请日：2004-10-01
申请人： Takeshi Norimatsu , Shuji Miyasaka , Yoshihisa Nakatoh , Mineo Tsushima , Tomokazu Ishikawa
发明人： Takeshi Norimatsu , Shuji Miyasaka , Yoshihisa Nakatoh , Mineo Tsushima , Tomokazu Ishikawa
IPC分类号： G10L19/00 , G10L21/02
CPC分类号： G10L19/032 , G10L19/0212 , G10L19/038
摘要： With respect to audio signal coding and decoding apparatuses, there is provided a coding apparatus that enables a decoding apparatus to reproduce an audio signal even through it does not use all of data from the coding apparatus, and a decoding apparatus corresponding to the coding apparatus. A quantization unit constituting a coding apparatus includes a first sub-quantization unit comprising sub-quantization units for low-band, intermediate-band, and high-band; a second sub-quantization unit for quantizing quantization errors from the first sub-quantization unit; and a third sub-quantization unit for quantizing quantization errors which have been processed by the first sub-quantization unit and the second sub-quantization unit.
摘要翻译：对于音频信号编码和解码装置，提供了一种编码装置，即使通过编码装置不使用全部数据，能够使解码装置再现音频信号，也可以使用与编码装置对应的解码装置。构成编码装置的量化单元包括：第一子量化单元，包括用于低频带，中频带和高频带的子量化单元; 第二子量化单元，用于量化来自第一子量化单元的量化误差; 以及用于量化由第一子量化单元和第二子量化单元处理的量化误差的第三子量化单元。

6. 发明授权

US06999828B2 Parallel signal processing device for a portable audio system 失效
标题翻译：用于便携式音频系统的并行信号处理装置
公开(公告)号：US06999828B2
公开(公告)日：2006-02-14
申请号：US09741912
申请日：2000-12-22
申请人： Shuji Miyasaka , Takeshi Norimatsu , Mineo Tsushima , Tomokazu Ishikawa , Yoshiaki Sawada
发明人： Shuji Miyasaka , Takeshi Norimatsu , Mineo Tsushima , Tomokazu Ishikawa , Yoshiaki Sawada
IPC分类号： G06F17/00 , G10L21/00
CPC分类号： H03H17/0223
摘要： The present invention is a signal processing device which performs parallel processes A and B efficiently. There is a deviation in the throughputs of the process A and B in processing an audio signal. First to Nth sub signal processing sections have capabilities to complete the process A within a period (N×T). A main signal processing sections has a capability to complete the process B within a period T. Efficient signal processing can be achieved by processing an input digital signal by means of distinct sub signal processing devices one after another and then processing the signal by the main signal processing section. (N×T).
摘要翻译：本发明是一种有效执行并行处理A和B的信号处理装置。在处理音频信号时，处理A和B的吞吐量有偏差。第一至第N个子信号处理部分具有在一段时间内完成过程A的能力（NxT）。主信号处理部分具有在时段T内完成处理B.能够通过不同的子信号处理装置一个接一个处理输入数字信号，然后通过主信号处理信号来实现有效的信号处理处理部分。（NxT）。

7. 发明授权

US06917712B2 Encoding apparatus and decoding apparatus 有权
标题翻译：编码装置和解码装置
公开(公告)号：US06917712B2
公开(公告)日：2005-07-12
申请号：US09952757
申请日：2001-09-12
申请人： Mineo Tsushima , Takeshi Norimatsu , Shuji Miyasaka , Tomokazu Ishikawa , Yoshiaki Sawada
发明人： Mineo Tsushima , Takeshi Norimatsu , Shuji Miyasaka , Tomokazu Ishikawa , Yoshiaki Sawada
IPC分类号： G10L19/02 , G10L19/18 , G06K9/36
CPC分类号： G10L19/18 , G10L19/02 , G10L19/0208 , G10L2019/0007
摘要： An encoding apparatus includes a quantized spectral sequence generation section for generating a quantized spectral sequence by quantizing an audio signal with a predetermined quantization precision, and a circulating code vector quantization section for outputting a spectral sequence code containing circulating position identification information indicating how much a reference spectral sequence is circulated to obtain a circulant quantized spectral sequence which is most similar to the quantized spectral sequence.
摘要翻译：编码装置包括：量化频谱序列生成部，其通过以预定的量化精度量化音频信号来生成量化的频谱序列;循环码矢量量化部，其输出含有循环位置识别信息的频谱序列码，光谱序列被循环以获得与量化的光谱序列最相似的循环量化的光谱序列。

8. 发明授权

US06904404B1 Multistage inverse quantization having the plurality of frequency bands 有权
公开(公告)号：US06904404B1
公开(公告)日：2005-06-07
申请号：US09227189
申请日：1999-01-08
申请人： Takeshi Norimatsu , Shuji Miyasaka , Yoshihisa Nakatoh , Mineo Tsushima , Tomokazu Ishikawa
发明人： Takeshi Norimatsu , Shuji Miyasaka , Yoshihisa Nakatoh , Mineo Tsushima , Tomokazu Ishikawa
IPC分类号： G10L19/00 , G10L21/02
CPC分类号： G10L19/032 , G10L19/0212 , G10L19/038
摘要： With respect to audio signal coding and decoding apparatuses, there is provided a coding apparatus that enables a decoding apparatus to reproduce an audio signal even through it does not use all of data from the coding apparatus, and a decoding apparatus corresponding to the coding apparatus. A quantization unit constituting a coding apparatus includes a first sub-quantization unit comprising sub-quantization units for low-band, intermediate-band, and high-band; a second sub-quantization unit for quantizing quantization errors from the first sub-quantization unit; and a third sub-quantization unit for quantizing quantization errors which have been processed by the first sub-quantization unit and the second sub-quantization unit.

9. 发明授权

US06871106B1 Audio signal coding apparatus, audio signal decoding apparatus, and audio signal coding and decoding apparatus 有权
标题翻译：音频信号编码装置，音频信号解码装置和音频信号编码和解码装置
公开(公告)号：US06871106B1
公开(公告)日：2005-03-22
申请号：US09266631
申请日：1999-03-11
申请人： Tomokazu Ishikawa , Mineo Tsushima , Takeshi Norimatsu
发明人： Tomokazu Ishikawa , Mineo Tsushima , Takeshi Norimatsu
IPC分类号： G10L19/02 , G06F17/00
CPC分类号： G10L19/0212
摘要： An audio signal coding apparatus includes a first-stage encoder for quantizing the time-to-frequency transformed audio signal and second-and-subsequent-stages of encoders each for quantizing a quantization error output from the previous-stage encoder A characteristic decision unit is provided which decides the frequency band of an audio signal to be quantized by each encoder of multiple-stage encoders, and a coding band control unit receives the frequency band decided by the characteristic decision unit and the time-to-frequency transformed audio signal, decides the order of connecting the respective encoders, and transforms the quantization bands of the encoders and the connecting order to code sequences. Therefore, it is possible to provide an audio signal coding apparatus performing adaptive scalable coding, which exhibits sufficient performance when coding various audio signals.
摘要翻译：音频信号编码装置包括用于量化时间 - 频率变换的音频信号的第一级编码器和用于量化前级编码器特性判定单元输出的量化误差的编码器的第二级和后级级由编码频带控制单元接收由特性判定单元和时间 - 频率变换音频信号决定的频带，决定由多级编码器的各编码器量化的音频信号的频带，连接各编码器的顺序，将编码器的量化频带和连接顺序转换为编码序列。因此，可以提供执行自适应可伸缩编码的音频信号编码装置，其在对各种音频信号进行编码时表现出足够的性能。

10. 发明授权

US06477490B2 Audio signal compression method, audio signal compression apparatus, speech signal compression method, speech signal compression apparatus, speech recognition method, and speech recognition apparatus 有权
标题翻译：音频信号压缩方法，音频信号压缩装置，语音信号压缩方法，语音信号压缩装置，语音识别方法和语音识别装置
公开(公告)号：US06477490B2
公开(公告)日：2002-11-05
申请号：US09892745
申请日：2001-06-28
申请人： Yoshihisa Nakatoh , Takeshi Norimatsu , Mineo Tsushima , Tomokazu Ishikawa , Mitsuhiko Serikawa , Taro Katayama , Junichi Nakahashi , Yoriko Yagi
发明人： Yoshihisa Nakatoh , Takeshi Norimatsu , Mineo Tsushima , Tomokazu Ishikawa , Mitsuhiko Serikawa , Taro Katayama , Junichi Nakahashi , Yoriko Yagi
IPC分类号： G10L1906
CPC分类号： H04B1/665 , G10L2019/0005
摘要： An audio signal compression apparatus for compressively coding an input audio signal comprises a time-to-frequency transformation unit for transforming the input audio signal to a frequency domain signal; a spectrum envelope calculation unit for calculating a spectrum envelope having different resolutions for different frequencies, from the input audio signal, using a weighting function on frequency based on human auditory characteristics; a normalization unit for normalizing the frequency domain signal using the spectrum envelope to obtain a residual signal; a power normalization unit for normalizing the residual signal by the power; an auditory weighting calculation unit for calculating weighting coefficients on frequency, based on the spectrum of the input audio signal and human auditory characteristics; and a multi-stage quantization device having plural stages of vector quantizers connected in series, to which the normalized residual signal is input, and at least one of the vector quantizers quantizing the residual signal using the weighting coefficients. Therefore, a low frequency band, which is auditively important, can be analyzed with a higher frequency resolution as compared with a high frequency band, whereby efficient signal compression utilizing human auditory characteristics is realized.
摘要翻译：一种用于对输入音频信号进行压缩编码的音频信号压缩装置包括用于将输入音频信号变换为频域信号的时间 - 频率变换单元; 频谱包络计算单元，用于根据输入的音频信号，使用基于人的听觉特征的频率的加权函数来计算用于不同频率的不同分辨率的频谱包络; 归一化单元，用于使用频谱包络对频域信号进行归一化以获得残余信号; 功率归一化单元，用于通过所述功率归一化所述残余信号; 听觉加权计算单元，用于基于输入音频信号的频谱和人类听觉特征来计算频率上的加权系数; 以及具有串联连接的多级矢量量化器的多级量化装置，其中输入归一化残差信号，以及使用加权系数量化残差信号的矢量量化器中的至少一个。因此，与高频带相比，可以以更高的频率分辨率来分析具有重要意义的低频带，从而实现利用人类听觉特性的有效信号压缩。

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