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65 条记录 (耗时 0.03 秒)

    Exponential calculation device and decoding device
    21.
    发明授权
    Exponential calculation device and decoding device 有权
    指数计算装置和解码装置

    公开(公告)号：US06304890B1

    公开(公告)日：2001-10-16

    申请号：US09244155

    申请日：1999-02-03

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

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

    IPC分类号： G06F738

    CPC分类号： G06F7/552 ,  G10L19/0212

    摘要： A device of the present invention is an exponential calculation device for calculating x{circumflex over ( )}(a/b) (where a and b are each an integer constant) for a given input value of x. The device includes: an input control section for outputting a value of x′, wherein x′=x when x≦A (where A is a threshold value within a variable range of x) and x′=x/2{circumflex over ( )}b when x>A; a core section for outputting a value of z′=x′{circumflex over ( )}(a/b); and an output control section for outputting a value of z, wherein z=z′ when x≦A and z=z′*2{circumflex over ( )}a when x>A.

    摘要翻译： 本发明的装置是用于为x的给定输入值计算x {circumflex over（）}（a / b）（其中a和b各自为整数常数）的指数计算装置。 该装置包括：用于输出x'的值的输入控制部分，其中当x <= A时，x'= x（其中A是x的可变范围内的阈值），x'= x / 2 （）} b当x> A时; 用于输出z'= x'{circumflex over（）}（a / b）的值的核心部分; 以及输出控制部分，用于输出z的值，其中当x> A时z = z'，当x> A时，z = z'* 2 {circumflex over（）} a。

    Decoding device
    22.
    发明授权
    Decoding device 有权
    解码设备

    公开(公告)号：US06297754B1

    公开(公告)日：2001-10-02

    申请号：US09538674

    申请日：2000-03-30

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

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

    IPC分类号： H03M740

    CPC分类号： H03M7/425

    摘要： A decoding device for decoding a data stream includes a decoding table including a first region and a second region; a first decoder; and a second decoder. The first region defines a relationship between first data having a predetermined number of bits and a result of decoding a portion of the first data having bits smaller than or equal to the predetermined number. The second region defines a relationship between concatenated data obtained by concatenating the first data with second data having additional bits and a result of decoding the concatenated data. The first decoder reads the first data from the data stream; decodes the portion of the first data based on the first region; determines whether the decoding of the portion of the first data is completed or not; and when the decoding of the portion of the first data is completed, outputs a result of the decoding of the portion of the first data. When the decoding of the portion of the first data is not completed, the second decoder reads the second data out of the data stream; concatenates the first data with the second data to generate the concatenated data; decodes the concatenated data based on the second region; and outputs a result of the decoding of the concatenated data.

    摘要翻译： 用于对数据流进行解码的解码装置包括：包括第一区域和第二区域的解码表; 第一解码器; 和第二解码器。 第一区域定义具有预定位数的第一数据和对具有小于或等于预定数目的位的第一数据的一部分进行解码的结果之间的关系。 第二区域定义了通过将第一数据与具有附加位的第二数据连接获得的级联数据和对级联数据进行解码的结果之间的关系。 第一解码器从数据流读取第一数据; 基于第一区域对第一数据的部分进行解码; 确定第一数据的部分的解码是否完成; 并且当第一数据的部分的解码完成时，输出第一数据的部分的解码结果。 当第一数据的部分的解码未完成时，第二解码器从数据流中读出第二数据; 将第一数据与第二数据连接以生成级联数据; 基于第二区域解码连接的数据; 并输出级联数据的解码结果。

    Sound field controller
    23.
    发明授权
    Sound field controller 失效
    声场控制器

    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

    Sound field control apparatus
    24.
    发明授权
    Sound field control apparatus 失效
    声场控制装置

    公开(公告)号：US5073942A

    公开(公告)日：1991-12-17

    申请号：US645476

    申请日：1991-01-24

    申请人： Hiroko Yoshida ,  Mitsuhiko Serikawa ,  Akihisa Kawamura ,  Masaharu Matsumoto ,  Katsuaki Sato

    发明人： Hiroko Yoshida ,  Mitsuhiko Serikawa ,  Akihisa Kawamura ,  Masaharu Matsumoto ,  Katsuaki Sato

    IPC分类号： G10H1/18 ,  G10H1/00 ,  H03H17/00 ,  H03H17/06

    CPC分类号： G10H1/0091 ,  G10H2210/301 ,  Y10S84/26

    摘要： A sound field switcher inputs an output sound field signal from a sound field producer. The inputted sound field signal is delayed sequentially by plural delayers, after which they are multiplied by coefficients by plural multipliers, and the multiplied results are all added by an adder. Coefficients stored in an area of a memory indicated by a coefficient counter are read out and set to the plural multipliers. The sound field switcher carries out control of the timing for switching the sound field signal produced by the sound field producer and the timing for the coefficient counter to commence counting. Assuming the time required for switching the sound field to be N sampling periods, in case of carrying out a sound field switching from a sound field A to a sound field B, a sound field switching controller issues an order to the coefficient counter so as to count up one by one from 0 to N, and on each count the coefficients stored in an area of the coefficient memory is set to the multipliers. When the count value of the coefficient counter comes to (N/2) or nearest to (N/2), the sound field switching controller issues an order to the sound field producer to output the sound field signal of the sound field B. When the count value of the coefficient counter comes to N, the switching from the sound field A to the sound field B is completed.

    Calculation of filter factors for digital filter
    26.
    发明授权
    Calculation of filter factors for digital filter 失效
    数字滤波器滤波因子的计算

    公开(公告)号：US4896285A

    公开(公告)日：1990-01-23

    申请号：US144477

    申请日：1988-01-15

    申请人： Seiichi Ishikawa ,  Masaharu Matsumoto ,  Katsuaki Satoh ,  Akihisa Kawamura

    发明人： Seiichi Ishikawa ,  Masaharu Matsumoto ,  Katsuaki Satoh ,  Akihisa Kawamura

    IPC分类号： H03H17/02 ,  H03H17/06

    CPC分类号： H03H17/06 ,  H03H17/0211

    摘要： An apparatus for calculating a filter factor for a digital filter which can be simply constructed and in which the time period for calculation can be shortened as compared with conventional techniques. The apparatus has an input circuit for inputting a desirable frequency property, a division circuit for dividing the inputted frequency property into a plurality of frequency bands, and a calculating circuit for obtaining filter factors for realizing a frequency property of each of the divided frequency bands. The input circuit inputs the frequency property with a frequency resolution corresponding to the number of the filter factors. The division circuit performs a correction for a division so that the frequency property becomes zero from a frequency over the high cut-off frequency of a band-pass filter toward the Nyquist frequency of the frequency band corresponding to the transversal filter, the Nyquist frequency being 1/2 of the sampling frequency. The calculating circuit has a transformation unit for performing a Hilbert transformation or a linear phase transformation with respect to the respective frequency properties divided by the division circuit.

    Exponential calculation device and decoding device
    30.
    发明授权
    Exponential calculation device and decoding device 有权
    指数计算装置和解码装置

    公开(公告)号：US06363407B1

    公开(公告)日：2002-03-26

    申请号：US09929156

    申请日：2001-08-14

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

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

    IPC分类号： G06F738

    CPC分类号： G06F7/552 ,  G10L19/0212

    摘要： A device of the present invention is an exponential calculation device for calculating x{circumflex over ( )}(a/b) (where a and b are each an integer constant) for a given input value of x. The device includes: an input control section for outputting a value of x′, wherein x′=x when x≦A (where A is a threshold value within a variable range of x) and x′=x/2{circumflex over ( )}b when x>A; a core section for outputting a value of z′=x′{circumflex over ( )}(a/b); and an output control section for outputting a value of z, wherein z=z′ when x≦A and z=z′*2{circumflex over ( )}a when x>A.

    摘要翻译： 本发明的装置是用于为x的给定输入值计算x {circumflex over（）}（a / b）（其中a和b各自为整数常数）的指数计算装置。 该装置包括：用于输出x'的值的输入控制部分，其中当x <= A时，x'= x（其中A是x的可变范围内的阈值），x'= x / 2 （）} b当x> A时; 用于输出z'= x'{circumflex over（）}（a / b）的值的核心部分; 以及输出控制部分，用于输出z的值，其中当x> A时z = z'，当x> A时，z = z'* 2 {circumflex over（）} a。