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    Compressed code decoding device and audio decoding device
    5.
    发明授权
    Compressed code decoding device and audio decoding device 失效
    压缩码解码装置和音频解码装置

    公开(公告)号：US6118821A

    公开(公告)日：2000-09-12

    申请号：US080133

    申请日：1998-05-15

    申请人： Masaharu Matsumoto ,  Takashi Katayama ,  Masahiro Sueyoshi ,  Shuji Miyasaka ,  Takeshi Fujita ,  Akihisa Kawamura ,  Tsukuru Ishito ,  Eiji Otomura ,  Tsuyoshi Nakamura

    发明人： Masaharu Matsumoto ,  Takashi Katayama ,  Masahiro Sueyoshi ,  Shuji Miyasaka ,  Takeshi Fujita ,  Akihisa Kawamura ,  Tsukuru Ishito ,  Eiji Otomura ,  Tsuyoshi Nakamura

    IPC分类号： G10L19/00 ,  G10L21/055 ,  H04H20/00 ,  H04N7/12 ,  H04N7/26 ,  H04S3/00

    CPC分类号： G10L21/055 ,  G10L19/00

    摘要： A compressed code decoding device of the present invention includes: a decoding section for receiving a plurality of groups of blocks of compressed codes and decoding each of the blocks of compressed codes; a buffer section for storing decoded signals decoded by the decoding section; a reproduction time acquisition section for acquiring a reproduction time at which to reproduce a predetermined one of the blocks; an output section for externally outputting the decoded signals stored in the buffer section; a detection section for detecting that the predetermined block of compressed codes has been decoded and output via the output section; an addition section for, at a time when the detection section detects that the predetermined block has been output, adding a time required for reproducing the predetermined block to the reproduction time acquired by the reproduction time acquisition section so as to produce a synchronization time; a synchronization section for comparing the synchronization time produced by the addition section and a current time so as to determine whether the synchronization time is ahead of or behind the current time; a code discarding section for, if the synchronization section determines that the synchronization time is ahead of the current time, discarding either compressed codes of one of the blocks next to the predetermined block or compressed codes of one of the groups next to the group including the predetermined block; and a reproduction delay section for, if the synchronization section determines that the synchronization time is behind the current time, delaying output of either decoded signals of the compressed codes of one of the blocks next to the predetermined block or decoded signals of the compressed codes of one of the groups next to the group including the predetermined block.

    摘要翻译： 本发明的压缩码解码装置包括：解码部分，用于接收多组压缩码块，并对每个压缩码块进行解码; 缓冲部，用于存储由解码部解码的解码信号; 再现时间获取部分，用于获取再现预定的一个块的再现时间; 输出部分，用于从存储在缓冲器部分中的外部输出解码信号; 检测部分，用于检测所述预定的压缩代码块是否经由所述输出部分被解码和输出; 一个加法部分，用于在检测部分检测到预定块已被输出时，将再现预定块所需的时间与由再现时间获取部分获得的再现时间相加以产生同步时间; 同步部分，用于比较由加法部分产生的同步时间和当前时间，以便确定同步时间是否在当前时间之前或之后; 代码丢弃部分，用于如果同步部分确定同步时间在当前时间之前，则丢弃与预定块相邻的块中的一个块的压缩代码或者包括 预定块 以及再现延迟部分，如果同步部分确定同步时间在当前时间之后，则将预定块之后的块之一的压缩码的解码信号的输出或压缩码的解码信号延迟 包括预定块的组旁边的组之一。

    Audio decoding device for decoding coded audio information with multiple channels
    6.
    发明授权
    Audio decoding device for decoding coded audio information with multiple channels 失效
    用于解码具有多个声道的编码音频信息的音频解码装置

    公开(公告)号：US06460016B1

    公开(公告)日：2002-10-01

    申请号：US09685234

    申请日：2000-10-10

    申请人： Masahiro Sueyoshi ,  Shuji Miyasaka ,  Tukuru Ishito ,  Takeshi Fujita ,  Takashi Katayama ,  Masaharu Matsumoto ,  Tuyoshi Nakamura ,  Eiji Otomura ,  Akihisa Kawamura

    发明人： Masahiro Sueyoshi ,  Shuji Miyasaka ,  Tukuru Ishito ,  Takeshi Fujita ,  Takashi Katayama ,  Masaharu Matsumoto ,  Tuyoshi Nakamura ,  Eiji Otomura ,  Akihisa Kawamura

    IPC分类号： G10L2104

    CPC分类号： H04B1/665 ,  H04H20/89 ,  H04H40/18

    摘要： An audio decoding device for decoding audio information with multiple channels includes a coded information memory section for storing the coded audio information; an information transmission section for reading the coded audio information stored at an arbitrary position in the coded information memory section; and an audio decoding section for decoding the coded audio information read by the information transmission section and outputting the resultant audio information in accordance with a time axis, wherein the information transmission section includes a buffer memory for retaining an address of an actual pointer for reading the coded audio information in the coded information memory section so as not to be reread, an address of a temporary pointer for reading the coded audio information in the coded information memory section so as to be reread, actual pointer data read by the actual pointer, and temporary pointer data read by the temporary pointer.

    摘要翻译： 用于对具有多个通道的音频信息进行解码的音频解码装置包括用于存储编码的音频信息的编码信息存储部分; 信息发送部，用于读取存储在编码信息存储部中的任意位置的编码音频信息; 以及音频解码部分，用于对由信息传输部分读取的编码音频信息进行解码，并根据时间轴输出所得到的音频信息，其中信息传输部分包括缓冲存储器，用于保存用于读取的实际指针的地址 编码信息存储部分中的编码音频信息不被重新读取，用于读取编码信息存储部分中的编码音频信息以便重新读取的临时指针的地址，由实际指针读取的实际指针数据，以及 由临时指针读取的临时指针数据。

    Decoding circuit and reproduction apparatus which mutes audio after header parameter changes
    9.
    发明授权
    Decoding circuit and reproduction apparatus which mutes audio after header parameter changes 有权
    标题参数改变后，使音频静音的解码电路和再现设备

    公开(公告)号：US06631352B1

    公开(公告)日：2003-10-07

    申请号：US09476897

    申请日：2000-01-03

    申请人： Takeshi Fujita ,  Takashi Katayama ,  Masahiro Sueyoshi ,  Shuji Miyasaka ,  Masaharu Matsumoto ,  Akihisa Kawamura ,  Kazutaka Abe ,  Kousuke Nishio

    发明人： Takeshi Fujita ,  Takashi Katayama ,  Masahiro Sueyoshi ,  Shuji Miyasaka ,  Masaharu Matsumoto ,  Akihisa Kawamura ,  Kazutaka Abe ,  Kousuke Nishio

    IPC分类号： G10L2100

    CPC分类号： G10L19/167 ,  G11B20/10527

    摘要： A decoding circuit, for receiving a bit stream including an encoded audio signal and header information used for-decoding the encoded audio signal, and decoding the encoded audio signal based on the header information, includes a header analysis section for outputting at least one decoding parameter obtained from the header information and decoding parameter change information indicating whether or not the at least one decoding parameter has been changed; a signal processing section for decoding the encoded audio signal, based on the at least one decoding parameter, into a decoded signal and outputting the decoded signal; an automatic mute processing section for executing automatic mute on the decoded signal after the at least one decoding parameter is changed; and an output section for outputting the decoded signal output from the automatic mute processing section.

    摘要翻译： 一种解码电路，用于接收包括编码音频信号的位流和用于解码编码音频信号的标题信息，以及基于标题信息对编码音频信号进行解码的标题分析部分，用于输出至少一个解码参数 从表示是否已经改变了至少一个解码参数的标题信息和解码参数改变信息获得; 信号处理部分，用于将编码音频信号基于至少一个解码参数解码为解码信号并输出​​解码信号; 自动静音处理部分，用于在所述至少一个解码参数改变之后对所述解码信号执行自动静音; 以及输出部分，用于输出从自动静音处理部分输出的解码信号。

    Sound image localization device and sound image localization method
    10.
    发明授权
    Sound image localization device and sound image localization method 失效
    声像定位装置和声像定位方法

    公开(公告)号：US06546105B1

    公开(公告)日：2003-04-08

    申请号：US09431092

    申请日：1999-11-01

    申请人： Takashi Katayama ,  Masaharu Matsumoto ,  Masahiro Sueyoshi ,  Shuji Miyasaka ,  Takeshi Fujita ,  Akihisa Kawamura ,  Kazutaka Abe ,  Kousuke Nishio

    发明人： Takashi Katayama ,  Masaharu Matsumoto ,  Masahiro Sueyoshi ,  Shuji Miyasaka ,  Takeshi Fujita ,  Akihisa Kawamura ,  Kazutaka Abe ,  Kousuke Nishio

    IPC分类号： H04R500

    CPC分类号： H04R5/00

    摘要： A sound image localization apparatus comprises a signal source for outputting an audio signal; a localization angle input unit for receiving an angle of a sound image to be localized; a coefficient control unit for receiving sound image localization angle information from the localization angle input unit, reading coefficients from a coefficient memory in accordance with the information, and outputting the coefficients; first, second, and third multipliers for multiplying the audio signal output from the signal source by using first, second, and third coefficients output from the coefficient control means, respectively; a first signal processing unit for receiving the output from the second multiplier, and processing it by using a filter having a predetermined first frequency response; a second signal processing unit for receiving the output from the second multiplier, and processing it by using a filter having a predetermined second frequency response; a first adder for adding the output from the first multiplier and the output from the first signal processing unit to output the sum; a second adder for adding the output from the third multiplier and the output from the second signal processing unit to output the sum; a first output unit for outputting the output of the first adder; and a second output unit for outputting the output of the second adder.

    摘要翻译： 声像定位装置包括用于输出音频信号的信号源; 定位角输入单元，用于接收要定位的声像的角度; 系数控制单元，用于从定位角输入单元接收声像定位角度信息，根据该信息从系数存储器读取系数，并输出系数; 第一，第二和第三乘法器，分别通过使用从系数控制装置输出的第一，第二和第三系数来乘以从信号源输出的音频信号; 第一信号处理单元，用于接收来自第二乘法器的输出，并通过使用具有预定的第一频率响应的滤波器对其进行处理; 第二信号处理单元，用于接收来自第二乘法器的输出，并通过使用具有预定的第二频率响应的滤波器进行处理; 第一加法器，用于将来自第一乘法器的输出和来自第一信号处理单元的输出相加以输出和; 第二加法器，用于将来自第三乘法器的输出和来自第二信号处理单元的输出相加以输出和; 第一输出单元，用于输出第一加法器的输出; 以及第二输出单元，用于输出第二加法器的输出。