公开(公告)号：US20120185241A1

公开(公告)日：2012-07-19

申请号：US13433063

申请日：2012-03-28

申请人： Shuji MIYASAKA ,  Kosuke Nishio ,  Takeshi Norimatsu

发明人： Shuji MIYASAKA ,  Kosuke Nishio ,  Takeshi Norimatsu

IPC分类号： G10L19/04 ,  G10L19/00

CPC分类号： G10L19/0212 ,  G10L19/12 ,  G10L19/22

摘要： An audio decoding apparatus comprises: a plurality of decoding units; a band replicating unit which processes a decoded signal obtained when a corresponding decoding unit decodes a coded signal, according to a scheme specified by transmitted information; and an information transmitting unit which transmits, to a signal processing unit, information identifying the corresponding decoding unit from among the plurality of decoding units.

摘要翻译： 音频解码装置包括：多个解码单元; 频带复制单元，根据所发送的信息指定的方案，处理当对应的解码单元解码编码信号时获得的解码信号; 以及信息发送单元，其向所述信号处理单元发送从所述多个解码单元中识别对应的解码单元的信息。

公开(公告)号：US5617478A

公开(公告)日：1997-04-01

申请号：US225602

申请日：1994-04-11

申请人： Ryou Tagami ,  Takeshi Norimatsu ,  Masaharu Matsumoto ,  Mikio Oda ,  Mitsuhiko Serikawa ,  Akihisa Kawamura ,  Hiroko Numazu

发明人： Ryou Tagami ,  Takeshi Norimatsu ,  Masaharu Matsumoto ,  Mikio Oda ,  Mitsuhiko Serikawa ,  Akihisa Kawamura ,  Hiroko Numazu

IPC分类号： H03G5/00 ,  H04R5/04 ,  H04R29/00 ,  H03G3/00

CPC分类号： H04R5/04 ,  H03G5/005

摘要： A sound reproduction system for automatically conducting a tone control for an audio signal according to the present invention includes: an input terminal for inputting an audio signal; a judgment circuit for determining a ratio between a stereophonic signal component and a monophonic signal component of the input audio signal and for outputting a judgment signal; a signal processing section for receiving the input audio signal and processing the input audio signal so as to generate an output signal having uniform transmission characteristics irrespective of the listening position; an adder for receiving the input audio signal and the output signal and for adding the input audio signal with the output signal at a certain addition ratio based on the judgment signal so as to generate an added signal; and a loudspeaker for receiving the added signal and for reproducing the added signal in a plurality of positions.

摘要翻译： 根据本发明的用于自动进行音频信号的音调控制的声音再现系统包括：用于输入音频信号的输入端; 用于确定所述输入音频信号的立体声信号分量和单声道信号分量之间的比率并用于输出判断信号的判断电路; 信号处理部分，用于接收输入音频信号并处理输入音频信号，以产生具有均匀传输特性的输出信号，而与收听位置无关; 加法器，用于接收所述输入音频信号和所述输出信号，并且用于基于所述判断信号以一定的相加比例将所述输入音频信号与所述输出信号相加以产生相加信号; 以及用于接收所附加的信号并用于在多个位置再现附加的信号的扬声器。

公开(公告)号：US5381482A

公开(公告)日：1995-01-10

申请号：US12265

申请日：1993-02-01

申请人： Masaharu Matsumoto ,  Mitsuhiko Serikawa ,  Akihisa Kawamura ,  Hiroko Numazu ,  Takeshi Norimatsu ,  Ryo Tagami ,  Mikio Oda

发明人： Masaharu Matsumoto ,  Mitsuhiko Serikawa ,  Akihisa Kawamura ,  Hiroko Numazu ,  Takeshi Norimatsu ,  Ryo Tagami ,  Mikio Oda

IPC分类号： H04S1/00 ,  H04S3/00 ,  H04S5/02 ,  H04S7/00

CPC分类号： H04S1/002 ,  H04S7/305 ,  H04S1/007 ,  H04S2400/01 ,  H04S5/00

摘要： A sound field controller for generating apparent sound sources by adjusting the amplitude and delay time of a sound signal so that the sound will be perceived by plural listeners as sound coming from a location separated from the specific location of the front speakers, and for additionally controlling the effect of the apparent sound sources by evaluating the attributes of the source sound signal. The controller includes FIR filters for generating a left sound pattern signal, FIR filters for generating a right sound pattern signal, a first delay circuit for delaying the left and right sound pattern signals by a first predetermined time and applying the delayed left and right sound pattern signals to the left and right speakers, respectively, to introduce an apparent sound source located left rear of a center listener; and a second delay circuit for delaying the left and right sound pattern signals by a second predetermined time and applying the delayed left and right sound pattern signals to the right and left speakers, respectively, to introduce an apparent sound source located right rear of a center listener.

摘要翻译： 一种声场控制器，用于通过调节声音信号的幅度和延迟时间来产生视在声源，使得声音将被多个听众感知为来自与前置扬声器的特定位置分离的位置的声音，并且用于另外控制 通过评估源声音信号的属性来观察视声源的影响。 控制器包括用于产生左声音模式信号的FIR滤波器，用于产生右声音模式信号的FIR滤波器，用于将左右声音图形信号延迟第一预定时间的第一延迟电路，并将延迟的左右声音模式 分别向左右扬声器发出信号，引入位于中心听众左后方的明显声源; 以及第二延迟电路，用于将左右声音图形信号延迟第二预定时间，并将延迟的左右声音图案信号分别施加到左右扬声器，以引入位于中心右后方的表观声源 听众

公开(公告)号：US20100063828A1

公开(公告)日：2010-03-11

申请号：US12519248

申请日：2008-10-16

申请人： Tomokazu Ishikawa ,  Takeshi Norimatsu ,  Takashi Katayama

发明人： Tomokazu Ishikawa ,  Takeshi Norimatsu ,  Takashi Katayama

IPC分类号： G10L19/00

CPC分类号： H04M3/568 ,  G10L19/008 ,  G10L25/12 ,  H04L65/607

摘要： To provide an enhanced true-to-life atmosphere enjoyed in multipoint connecting, and reduce a calculation load at a multipoint connection unit, as well.A stream synthesizing device includes an input unit which inputs at least two coded signals each including a first downmix acoustic signal and an extended signal, each of first downmix acoustic signals being obtained by coding an acoustic signal into which at least two sound signals are downmixed, and the extended signal being for obtaining the at least two sound signals out of the first downmix acoustic signal; a coded signal generating unit which generates: a second downmix acoustic signal and an extended signal based on each of coded signals inputted by the input unit, the second downmix acoustic signal being for obtaining each of the first downmix acoustic signals, and the generated extended signal being for obtaining each of the first downmix acoustic signals out of the second downmix acoustic signal; and generate a coded signal including the generated second downmix acoustic signal, the generated extended signal, and each of extended signals included in the corresponding inputted coded signal; and an output unit which outputs the generated coded signal.

摘要翻译： 为了提供在多点连接中享受的增强的真实生活氛围，并减少多点连接单元的计算负荷。 流合成装置包括：输入单元，其输入至少两个编码信号，每个编码信号包括第一下混音声信号和扩展信号，每个第一下混音声信号是通过对至少两个声音信号进行混合的声信号进行编码而获得的， 并且所述扩展信号用于从所述第一下混声音信号中获得所述至少两个声音信号; 编码信号生成单元，其基于由所述输入单元输入的每个编码信号生成第二下混声音信号和扩展信号，所述第二下混声音信号用于获得所述第一下混声音信号中的每一个，并且所生成的扩展信号 用于从所述第二下混声音信号中获得所述第一下混声音信号中的每一个; 并生成包括所生成的第二下混声音信号，所生成的扩展信号和包括在相应的输入编码信号中的每个扩展信号的编码信号; 以及输出单元，其输出所生成的编码信号。

公开(公告)号：US08391513B2

公开(公告)日：2013-03-05

申请号：US12519248

申请日：2008-10-16

申请人： Tomokazu Ishikawa ,  Takeshi Norimatsu ,  Takashi Katayama

发明人： Tomokazu Ishikawa ,  Takeshi Norimatsu ,  Takashi Katayama

IPC分类号： H03G5/00

CPC分类号： H04M3/568 ,  G10L19/008 ,  G10L25/12 ,  H04L65/607

摘要： To provide an enhanced true-to-life atmosphere enjoyed in multipoint connecting, and reduce a calculation load at a multipoint connection unit, as well.A stream synthesizing device includes an input unit which inputs at least two coded signals each including a first downmix acoustic signal and an extended signal, each of first downmix acoustic signals being obtained by coding an acoustic signal into which at least two sound signals are downmixed, and the extended signal being for obtaining the at least two sound signals out of the first downmix acoustic signal; a coded signal generating unit which generates: a second downmix acoustic signal and an extended signal based on each of coded signals inputted by the input unit, the second downmix acoustic signal being for obtaining each of the first downmix acoustic signals, and the generated extended signal being for obtaining each of the first downmix acoustic signals out of the second downmix acoustic signal; and generate a coded signal including the generated second downmix acoustic signal, the generated extended signal, and each of extended signals included in the corresponding inputted coded signal; and an output unit which outputs the generated coded signal.

摘要翻译： 为了提供在多点连接中享受的增强的真实生活氛围，并减少多点连接单元的计算负荷。 流合成装置包括：输入单元，其输入至少两个编码信号，每个编码信号包括第一下混音声信号和扩展信号，每个第一下混音声信号是通过对至少两个声音信号进行混合的声信号进行编码而获得的， 并且所述扩展信号用于从所述第一下混声音信号中获得所述至少两个声音信号; 编码信号生成单元，其基于由所述输入单元输入的每个编码信号生成第二下混声音信号和扩展信号，所述第二下混声音信号用于获得所述第一下混声音信号中的每一个，并且所生成的扩展信号 用于从所述第二下混声音信号中获得所述第一下混声音信号中的每一个; 并生成包括所生成的第二下混声音信号，所生成的扩展信号和包括在相应的输入编码信号中的每个扩展信号的编码信号; 以及输出单元，其输出所生成的编码信号。

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。

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。

公开(公告)号：US06311153B1

公开(公告)日：2001-10-30

申请号：US09165297

申请日：1998-10-02

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： G01L2100

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。

公开(公告)号：US08108222B2

公开(公告)日：2012-01-31

申请号：US12836900

申请日：2010-07-15

申请人： Mineo Tsushima ,  Takeshi Norimatsu ,  Kosuke Nishio ,  Naoya Tanaka

发明人： Mineo Tsushima ,  Takeshi Norimatsu ,  Kosuke Nishio ,  Naoya Tanaka

IPC分类号： G10L21/00

CPC分类号： G10L21/038 ,  G10L19/0208 ,  G10L19/0212

摘要： An encoding device (200) includes an MDCT unit (202) that transforms an input signal in a time domain into a frequency spectrum including a lower frequency spectrum, a BWE encoding unit (204) that generates extension data which specifies a higher frequency spectrum at a higher frequency than the lower frequency spectrum, and an encoded data stream generating unit (205) that encodes to output the lower frequency spectrum obtained by the MDCT unit (202) and the extension data obtained by the BWE encoding unit (204). The BWE encoding unit (204) generates as the extension data (i) a first parameter which specifies a lower subband which is to be copied as the higher frequency spectrum from among a plurality of the lower subbands which form the lower frequency spectrum obtained by the MDCT unit (202) and (ii) a second parameter which specifies a gain of the lower subband after being copied.

摘要翻译： 一种编码装置（200）包括：将时域中的输入信号变换成包括较低频谱的频谱的MDCT单元（202），生成扩展数据的BWE编码单元（204），其生成指定较高频谱的扩展数据 频率高于较低频谱的编码数据流生成单元（205），其编码为输出由MDCT单元（202）获得的较低频谱和由BWE编码单元（204）获得的扩展数据。 BWE编码单元（204）生成作为扩展数据（i）的第一参数，该第一参数指定要从多个下个子带中复制的较低子带作为较高频谱，其形成由 MDCT单元（202）和（ii）指定复制后下一个子带的增益的第二参数。

公开(公告)号：US07783496B2

公开(公告)日：2010-08-24

申请号：US12370203

申请日：2009-02-12

申请人： Mineo Tsushima ,  Takeshi Norimatsu ,  Kosuke Nishio ,  Naoya Tanaka

发明人： Mineo Tsushima ,  Takeshi Norimatsu ,  Kosuke Nishio ,  Naoya Tanaka

IPC分类号： G10L21/00

CPC分类号： G10L21/038 ,  G10L19/0208 ,  G10L19/0212

摘要： An encoding device (200) includes an MDCT unit (202) that transforms an input signal in a time domain into a frequency spectrum including a lower frequency spectrum, a BWE encoding unit (204) that generates extension data which specifies a higher frequency spectrum at a higher frequency than the lower frequency spectrum, and an encoded data stream generating unit (205) that encodes to output the lower frequency spectrum obtained by the MDCT unit (202) and the extension data obtained by the BWE encoding unit (204). The BWE encoding unit (204) generates as the extension data (i) a first parameter which specifies a lower subband which is to be copied as the higher frequency spectrum from among a plurality of the lower subbands which form the lower frequency spectrum obtained by the MDCT unit (202) and (ii) a second parameter which specifies a gain of the lower subband after being copied.

摘要翻译： 一种编码装置（200）包括：将时域中的输入信号变换成包括较低频谱的频谱的MDCT单元（202），生成扩展数据的BWE编码单元（204），其生成指定较高频谱的扩展数据 频率高于较低频谱的编码数据流生成单元（205），其编码为输出由MDCT单元（202）获得的较低频谱和由BWE编码单元（204）获得的扩展数据。 BWE编码单元（204）生成作为扩展数据（i）的第一参数，该第一参数指定要从多个下个子带中复制的较低子带作为较高频谱，其形成由 MDCT单元（202）和（ii）指定复制后下一个子带的增益的第二参数。