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    • 22. 发明授权
    • Inverse modified discrete cosine transform signal transforming system
    • 逆修正离散余弦变换信号变换系统
    • US5646960A
    • 1997-07-08
    • US731645
    • 1996-10-17
    • Mito SonoharaKyoya Tsutsui
    • Mito SonoharaKyoya Tsutsui
    • H04B14/00G06F17/14
    • G06F17/147
    • An MDCT calculating circuit includes an x.sub.01 calculating circuit for multiplying input signals with a forward transforming window and a linear forward transforming unit for linear forward transforming an output signal of the calculating circuit. The linear forward transforming unit includes an x.sub.02 calculating circuit and an x.sub.03 calculating circuit for pre-processing the output signal of the x.sub.01 calculating circuit and an integration and summation processing circuit for executing integration and summation processing operations on an output signal of the pre-processing unit. The integration and summation processing circuit executes an integration and summation operation on an N/2 number of input signals from the pre-processing unit by grouping a k number of input signals as a processing unit and iteratively executes the integration and summation processing operations a N/(2*K) number of times for outputting a sum total of N/2 number of signals.
    • MDCT计算电路包括用于将输入信号与正向变换窗口相乘的x01计算电路和用于对计算电路的输出信号进行线性正向变换的线性正向变换单元。 线性正向变换单元包括x02计算电路和用于预处理x01计算电路的输出信号的x03计算电路和用于对预处理的输出信号执行积分和求和处理电路的积分和求和处理电路 单元。 积分和求和处理电路对来自预处理单元的N / 2数量的输入信号执行积分和求和操作,通过将输入信号的ak个数量分组为一个处理单元,并迭代地执行积分和求和处理操作N / (2 * K)次数输出N / 2个信号的总数。
    • 23. 发明授权
    • Data compression method and apparatus in which quantizing bits are
allocated to a block in a present frame in response to the block in a
past frame
    • 数据压缩方法和装置,其中响应于过去帧中的块,将量化比特分配给当前帧中的块
    • US5471558A
    • 1995-11-28
    • US953556
    • 1992-09-29
    • Kyoya Tsutsui
    • Kyoya Tsutsui
    • H03M7/30H04B1/66H04B14/00H04B14/04G10L3/02G10L9/00
    • H04B1/665
    • A digital input signal is compressed to provide a compressed output signal in a manner which prevents pre-echo, a common defect of data compressors. The digital input signal is divided in time into frames, and into at least one block of data in each frame. The frames include a past frame preceding a present frame. Block floating is applied to the data in the block in each frame. Quantizing bits are adaptively allocated to the data in the block in the present frame in response to the block in the past frame. Finally, the resulting quantized data is added to the compressed output signal. In a first variation, a signal energy or an allowable noise level is determined for the block in each frame. A word length is determined for the block in each frame in response to the determined signal energy or allowable noise level of the block. The quantizing bits are allocated to the data in the block in the present frame in response to the word length for the block in the past frame. In a second variation, a signal energy in the block in each frame is determined, and quantizing bits are adaptively allocated to the data in the block in the present frame in response to an interpolation between the signal energy for the block in the present frame and for the block in the past frame.
    • 数字输入信号被压缩以提供压缩输出信号,其方式是防止数据压缩器的共同缺陷的预回波。 数字输入信号在时间上被划分为帧,并且在每帧中被分成至少一个数据块。 帧包括在当前帧之前的过去帧。 块浮动应用于每帧中的块中的数据。 响应于过去帧中的块,量化比特被自适应地分配给当前帧中的块中的数据。 最后,将所得到的量化数据添加到压缩输出信号。 在第一变型中,为每个帧中的块确定信号能量或允许噪声电平。 响应于确定的信号能量或块的允许噪声电平,确定每帧中的块的字长度。 响应于过去帧中的块的字长度,量化比特被分配给当前帧中的块中的数据。 在第二变型中,确定每帧中的块中的信号能量,并且响应于在当前帧中的块的信号能量与当前帧中的块的信号能量之间的插值,量化比特被自适应地分配给当前帧中的块中的数据;以及 对于过去框架中的块。
    • 26. 发明申请
    • Method and device for generating data, method and device for restoring data, and program
    • 用于生成数据的方法和装置,用于恢复数据的方法和装置以及程序
    • US20050021815A1
    • 2005-01-27
    • US10855144
    • 2004-05-27
    • Naoya HanedaKyoya Tsutsui
    • Naoya HanedaKyoya Tsutsui
    • G10L11/00G10K15/02G10L19/00G10L19/14G06F15/16
    • G10L19/167
    • A data playing device according to the present invention generates code frames of original data by performing restoration processing based on sample listening frames included in sample listening data and the additional frames corresponding to the sampling listening frames respectively, and plays or records the obtained code frames with high-quality sound. The present invention can be applied to a coding device, a playing device, a recording device or the like, whereby a user who has received distribution data listens to sample listening data included in the distribution data. If the user is satisfied with the contents, the user updates the license information by paying the price thereof using a predetermined method, and thus can flexibly deal with various contents data distribution services.
    • 根据本发明的数据播放装置通过基于包括在样本收听数据中的样本收听帧和对应于采样收听帧的附加帧执行恢复处理来生成原始数据的代码帧,并且将获得的代码帧与 高品质的声音 本发明可以应用于编码装置,播放装置,记录装置等,由此接收分发数据的用户听取分发数据中包括的采样数据。 如果用户对内容感到满意,则用户通过使用预定方法支付价格来更新许可信息,从而可以灵活地处理各种内容数据分发服务。
    • 28. 发明授权
    • Audio signal pitch adjustment apparatus and method
    • 音频信号音调调节装置及方法
    • US06519558B1
    • 2003-02-11
    • US09574899
    • 2000-05-19
    • Kyoya Tsutsui
    • Kyoya Tsutsui
    • G10L1104
    • G10L21/04G10L19/02G10L2021/0135
    • A signal processing method and apparatus is disclosed, which is capable of reproducing a coded audio signal by decoding it while shifting its pitch, and reproducing, from an original sound, a sound having a sufficiently higher pitch than the original sound with few operations and less cost for the decoder used in the signal processing apparatus, and an information serving medium for serving a program which implements the signal decoding and pitch shifting. In one embodiment, the method of providing a signal processing method for decoding a coded signal for reading, includes setting a pitch for the coded signal, decoding only a low frequency portion of the coded signal according to the set pitch, and shifting the pitch of the decoded read signal based on the set pitch.
    • 公开了一种信号处理方法和装置,其能够通过对其音调进行解码而再现编码音频信号,并且从原始声音再现具有比原始声音足够高的音调的声音,具有少量的操作和更少的声音 用于信号处理装置中使用的解码器的费用,以及用于服务实现信号解码和音调移位的程序的信息服务介质。 在一个实施例中,提供用于对用于读取的编码信号进行解码的信号处理方法的方法包括:设置编码信号的音调,根据设定的音调仅对编码信号的低频部分进行解码, 基于设定间距的解码读信号。
    • 30. 再颁专利
    • Apparatus and method for audio data compression and expansion with
reduced block floating overhead
    • 用于音频数据压缩和扩展的装置和方法,减少块浮动开销
    • USRE36683E
    • 2000-05-02
    • US767840
    • 1996-12-18
    • Kyoya Tsutsui
    • Kyoya Tsutsui
    • H04B1/66G10L5/00
    • H04B1/665H04B1/667
    • A method for compressing a digital audio input signal to provide a recording signal in which the input signal is divided into frames comprising plural samples. Each frame is transformed into a block of spectral coefficients, which are divided into plural bands. For each band, block floating is applied to the spectral coefficients therein; a block floating coefficient is generated; the spectral coefficients are quantized with an adaptive number of bits to provide quantized spectral coefficients; and a word length is generated. Finally, there is added to the recording signal a block of data derived from the block of spectral coefficients and consisting of the quantized spectral coefficients, a main word length and a main block floating coefficient for each band, and a reserve word length at least for each lower frequency band. In a variation, zero bits are allocated to quantize the spectral coefficients in bands higher in frequency than a highest usable band. The block of data consists of the quantized spectral coefficients, at least one word length, and at least one block floating coefficient, for each band up to the highest usable band; and data indicating the number of bands up to the highest usable band.
    • 一种用于压缩数字音频输入信号以提供记录信号的方法,其中输入信号被分成包括多个样本的帧。 每个帧被转换成频谱系数块,其被分成多个频带。 对于每个频带,块浮动被应用于其中的频谱系数; 产生块浮动系数; 频谱系数用自适应位数量化,以提供量化的频谱系数; 并产生字长。 最后,向记录信号中添加从频谱系数块导出的数据块,并且由量化频谱系数,每个频带的主字长和主块浮动系数组成,并且至少为 每个低频段。 在一个变型中,零比特被分配以量化频率高于最高可用频带的频带中的频谱系数。 对于高达最高可用频带的每个频带,数据块包括量化频谱系数,至少一个字长和至少一个块浮动系数; 以及指示到最高可用频带的频带数量的数据。