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1. 发明授权

US06564187B1 Waveform signal compression and expansion along time axis having different sampling rates for different main-frequency bands 失效
标题翻译：对于不同的主频带，沿时间轴的波形信号压缩和扩展具有不同的采样率
公开(公告)号：US06564187B1
公开(公告)日：2003-05-13
申请号：US09536386
申请日：2000-03-28
申请人： Tadao Kikumoto , Atsushi Hoshiai , Satoshi Kusakabe
发明人： Tadao Kikumoto , Atsushi Hoshiai , Satoshi Kusakabe
IPC分类号： G10L2104
CPC分类号： G10L21/04
摘要： An apparatus and method for compression and expansion of a wave signal on a time axis. A memory device stores waveform data representative of a waveform for each sub-frequency band of each main-frequency band of a wave signal, in which the wave signal is divided into a plurality of the main-frequency bands, each of the main-frequency bands is divided into a plurality of the sub-frequency bands. A plurality of time axis compression and expansion devices are provided for each of the sub-frequency bands for performing time axis compression and expansion of the waveform. A mixing device mixes signals provided from the time axis compression and expansion devices. Each of the time axis compression and expansion devices performs compression and expansion in a sampling rate that corresponds to one of the main-frequency bands that includes the sub-frequency band that is subject to the waveform time axis compression and expansion, wherein the sampling rate of at least one of the main-frequency bands is different from the sampling rate of at least one other of the main frequency bands.
摘要翻译：一种用于在时间轴上压缩和扩展波信号的装置和方法。存储装置存储表示波信号的每个主频带的每个子频带的波形数据，其中波信号被分成多个主频带，每个主频频带被分成多个子频带。为每个子频带提供多个时间轴压缩和扩展装置，用于执行波形的时间轴压缩和扩展。混合装置混合从时间轴压缩和膨胀装置提供的信号。每个时间轴压缩和膨胀装置以对应于包括经受波形时间轴压缩和扩展的子频带的主频带之一的采样率执行压缩和扩展，其中采样率至少一个主频带与至少另一个主频带的采样率不同。

2. 发明授权

US06201175B1 Waveform reproduction apparatus 有权
标题翻译：波形再现设备
公开(公告)号：US06201175B1
公开(公告)日：2001-03-13
申请号：US09511009
申请日：2000-02-22
申请人： Tadao Kikumoto , Atsushi Hoshiai , Satoshi Kusakabe
发明人： Tadao Kikumoto , Atsushi Hoshiai , Satoshi Kusakabe
IPC分类号： G06F1715
CPC分类号： G10H7/02 , G10H2250/571
摘要： A method for generating a compressed or expanded waveform from original waveform data is disclosed. A plurality of frequency band-divided waveform data is generated from the original waveform data. Phase and amplitude data having periodically changing amplitudes are extracted for each of the plurality of frequency band-divided waveform data. The periodically changing phase data is converted to periodically changing frequency data, and a temporal change rate of the periodically changing amplitude and frequency data is adjusted for each of the plurality of frequency band-divided waveform data. The temporally adjusted amplitude and frequency data for the plurality of frequency band-divided waveform data is then combined to generate the compressed or expanded waveform.
摘要翻译：公开了一种从原始波形数据生成压缩或扩展波形的方法。从原始波形数据生成多个频带分割波形数据。针对多个频带分割波形数据中的每一个提取具有周期性变化幅度的相位和振幅数据。周期性变化的相位数据被转换为周期性变化的频率数据，并且针对多个频带分割波形数据中的每一个调整周期性变化的幅度和频率数据的时间变化率。然后组合用于多个频带分割波形数据的时间上调整的幅度和频率数据以产生压缩或扩展的波形。

3. 发明授权

US06323797B1 Waveform reproduction apparatus 失效
标题翻译：波形再现设备
公开(公告)号：US06323797B1
公开(公告)日：2001-11-27
申请号：US09412201
申请日：1999-10-05
申请人： Tadao Kikumoto , Atsushi Hoshiai , Satoshi Kusakabe
发明人： Tadao Kikumoto , Atsushi Hoshiai , Satoshi Kusakabe
IPC分类号： H03M166
CPC分类号： G11B20/10527 , G11B20/00007 , G11B27/038
摘要： To make possible the smooth compression and expansion of an audio signal without directly culling out or repeating a prescribed segment of the audio signal, in other words, the waveform, by the use of a phase vocoder format and, together with this, making it possible to compress and expand an audio signal that has an abundance of changes. The system includes a storage device in which the data regarding the changes in the amplitude and the frequency of the waveform that accompany the passage of time are stored. The system also includes a time position data generator in which the time position data that indicate the time positions that change such that the time positions of the waveform retrace the passage of time are generated in order. The system also includes a waveform reproducer in which, from the storage means, the amplitude and the frequency data that correspond to the time position of the waveform that indicates the time position data that are generated by the time position data generating means are read out and a waveform that is based on said read out amplitude and frequency is output.
摘要翻译：为了使音频信号的平滑压缩和扩展成为可能，而不直接剔除或重复音频信号的规定段，换句话说，通过使用相位声码器格式的波形，并且与此一起使得它成为可能压缩和扩展具有丰富变化的音频信号。该系统包括存储装置，在存储装置中存储伴随时间的波形的振幅和频率的变化的数据。该系统还包括一个时间位置数据发生器，其中指示时间位置数据改变，使得波形的时间位置按时间顺序回溯。该系统还包括波形再现器，其中从存储装置读出对应于指示由时间位置数据产生装置生成的时间位置数据的波形的时间位置的振幅和频率数据，以及输出基于所述读出的振幅和频率的波形。

4. 发明授权

US5751771A Waveform data compression apparatus and waveform data expansion apparatus 失效
标题翻译：波形数据压缩装置和波形数据扩展装置
公开(公告)号：US5751771A
公开(公告)日：1998-05-12
申请号：US467573
申请日：1995-06-05
申请人： Masaaki Katsumata , Satoshi Kusakabe
发明人： Masaaki Katsumata , Satoshi Kusakabe
IPC分类号： G06F5/00 , G10H7/02 , G10L19/00 , G10L19/04 , H03M3/04 , H03M7/30 , H03M7/36 , H04B14/06 , H04N1/41 , H04N19/124 , H04N19/13 , H04N19/132 , H04N19/134 , H04N19/154 , H04N19/196 , H04N19/36 , H04N19/423 , H04N19/50 , H04N19/59 , H04N19/593 , H04N19/80 , H04N19/85 , H04B1/66
CPC分类号： H03M7/30
摘要： The present invention provides a waveform data compression apparatus which can express waveform data by a small amount of compression data obtained by compressing the aforesaid waveform data, and a waveform data expansion apparatus which can reproduce the compression data produced by the aforesaid waveform data compression apparatus to obtain the original waveform data. The. waveform data compression apparatus interpolates waveform data of addresses before and behind the waveform data of an objective address in a block to be processed to acquire interpolated data of the objective address to be processed, and uses difference data between the interpolated data and the waveform data of the objective address to be processed, thereby compressing the waveform data. The waveform data expansion apparatus operates to perform reverse process to that performed by the waveform data compression apparatus.
摘要翻译：本发明提供一种能够通过压缩上述波形数据而获得的少量压缩数据来表达波形数据的波形数据压缩装置，以及能够将由上述波形数据压缩装置产生的压缩数据再生成的波形数据扩展装置获取原始波形数据。的。波形数据压缩装置对要处理的块中的目标地址的波形数据之前和之后的地址的波形数据进行插值，以获取要处理的目标地址的内插数据，并使用内插数据与波形数据之间的差分数据要处理的目标地址，从而压缩波形数据。波形数据扩展装置进行与波形数据压缩装置相反的处理。

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