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1. 发明授权

US5140541A Digital filter system with changeable cutoff frequency 失效
标题翻译：具有可变截止频率的数字滤波系统
公开(公告)号：US5140541A
公开(公告)日：1992-08-18
申请号：US608572
申请日：1990-11-02
申请人： Goro Sakata , Kikuji Tanaka , Kohtaro Hanzawa , Ryutaro Hayashi
发明人： Goro Sakata , Kikuji Tanaka , Kohtaro Hanzawa , Ryutaro Hayashi
IPC分类号： G06F17/10 , H03H17/02 , H03H17/04
CPC分类号： H03H17/0226 , G06F17/10 , H03H17/0294 , H03H17/0416
摘要： Using stored discrete samplers of filter coefficients at each of a plurality of discrete operating points, a filter control (e.g., CPU) provides dynamic control of a digital filter through an interpolator in accordance with a variable input indicative of a desired operating point (e.g., cutoff frequency) of the digital filter. In response to a large change in the desired operating point, the control produces a succession of operating point subgoals progressively approaching the changed desired operating point and a corresponding succession of filter coefficient subgoals. Each filter coefficient subgoal is calculated as a function of stored discrete filter coefficient samples near each operating point subgoal. In response to a new parameter set from the filter control, containing a new subgoal of the coefficients, the interpolator starts coefficient interpolating to smoothly move the operating point of the digital filter toward the new subgoal. By starting the interpolating operations after the updating of the parameter set has been completed, synchronization may be established among the interpolating operations on the coefficients.
摘要翻译：使用多个离散操作点中的每一个处的滤波器系数的存储的离散采样器，滤波器控制（例如，CPU）根据指示期望操作点的可变输入（例如，CPU）提供通过内插器的数字滤波器的动态控制，截止频率）。响应于期望操作点的大的变化，控制产生逐渐接近改变的期望操作点的连续的工作点子目标和相应的一系列过滤器系数子目标。根据每个工作点子目标附近的存储的离散滤波器系数样本计算每个滤波器系数子目标。响应于来自滤波器控制的新参数集合，其中包含系数的新的子目标，内插器开始系数内插以将数字滤波器的工作点平滑地移向新的子目标。通过在完成参数集的更新之后开始内插操作，可以在对系数的内插操作之间建立同步。

2. 发明授权

US5255215A Digital filter system with changeable cutoff frequency 失效
标题翻译：具有可变截止频率的数字滤波系统
公开(公告)号：US5255215A
公开(公告)日：1993-10-19
申请号：US872922
申请日：1992-04-23
申请人： Goro Sakata , Kikuji Tanaka , Kohtaro Hanzawa , Ryutaro Hayashi
发明人： Goro Sakata , Kikuji Tanaka , Kohtaro Hanzawa , Ryutaro Hayashi
IPC分类号： G06F17/10 , H03H17/02 , H03H17/04 , G06F15/31
CPC分类号： H03H17/0226 , G06F17/10 , H03H17/0294 , H03H17/0416
摘要： Using stored discrete samples of filter coefficients at each of a plurality of discrete operating points, a filter control (e.g., CPU) provides dynamic control of a digital filter through an interpolator in accordance with a variable input indicative of a desired operating point (e.g., cutoff frequency) of the digital filter. In response to a large change in the desired operating point, the control produces a succession of operating point subgoals progressively approaching the changed desired operating point and a corresponding succession of filter coefficient subgoals. Each filter coefficient subgoal is calculated as a function of stored discrete filter coefficient samples near each operating point subgoal. In response to a new parameter set from the filter control, containing a new subgoal of the coefficients, the interpolator starts coefficient interpolating to smoothly move the operating point of the digital filter toward the new subgoal. By starting the interpolating operations after the updating of the parameter set has been completed, synchronization may be established among the interpolating operations on the coefficients.
摘要翻译：滤波器控制（例如，CPU）使用在多个离散操作点中的每一个处存储的滤波器系数的离散样本，根据指示期望操作点的可变输入（例如，CPU）提供通过内插器的数字滤波器的动态控制，截止频率）。响应于期望操作点的大的变化，控制产生逐渐接近改变的期望操作点的连续的工作点子目标和相应的一系列过滤器系数子目标。根据每个工作点子目标附近的存储的离散滤波器系数样本计算每个滤波器系数子目标。响应于来自滤波器控制的新参数集合，其中包含系数的新的子目标，内插器开始系数内插以将数字滤波器的工作点平滑地移向新的子目标。通过在完成参数集的更新之后开始内插操作，可以在对系数的内插操作之间建立同步。

3. 发明授权

US5442125A Signal processing apparatus for repeatedly performing a same processing on respective output channels in time sharing manner 失效
标题翻译：信号处理装置，用于以分时方式对各个输出通道重复执行相同的处理
公开(公告)号：US5442125A
公开(公告)日：1995-08-15
申请号：US295353
申请日：1994-08-24
申请人： Kohtaro Hanzawa , Goro Sakata , Kikuji Tanaka
发明人： Kohtaro Hanzawa , Goro Sakata , Kikuji Tanaka
IPC分类号： G10H1/18 , G10H7/00
CPC分类号： G10H1/187 , G10H7/002
摘要： A signal processing apparatus according to the present invention is used as a sound source, an effecting machine and/or a communication equipment, which simultaneously generates or processes a plurality of musical tones and sounds on the basis of a plurality of input data such as performance data, musical tone data and/or communication data. This signal processing apparatus stores a program prepared for controlling operation to generate or process musical tones and sounds only for one channel. The program is read out in accordance with a lower bit of a readout counter. A upper bit of the readout counter is used to designate a channel to which the generated or processed musical tones and sounds are assigned in accordance with the read out program. As a result, only a small area is required for storing the program and a simple construction may be employed in the apparatus.
摘要翻译：根据本发明的信号处理装置用作声源，效果机和/或通信设备，其基于诸如性能的多个输入数据同时生成或处理多个乐音和声音数据，乐音数据和/或通信数据。该信号处理装置存储准备用于控制操作的程序，以便仅为一个通道生成或处理乐音和声音。根据读出计数器的低位读出程序。读出计数器的高位用于根据读出的程序指定生成或处理的乐音和声音被分配到的频道。结果，只需要较少的区域来存储程序，并且可以在该装置中采用简单的结构。

4. 发明授权

US5590364A Signal processing apparatus 失效
标题翻译：信号处理装置
公开(公告)号：US5590364A
公开(公告)日：1996-12-31
申请号：US407498
申请日：1995-03-17
申请人： Kohtaro Hanzawa , Goro Sakata , Kikuji Tanaka
发明人： Kohtaro Hanzawa , Goro Sakata , Kikuji Tanaka
IPC分类号： G10H1/043 , G06F9/06 , G06F9/445 , G06F9/54 , G06F17/10 , G10H7/00 , G10K15/12
CPC分类号： G06F8/67 , G10H7/002
摘要： In a signal processing apparatus which stores a program inside, and performs a series of processes on a received signal according to the program, such as an arithmetic operation or a delay process, and outputs the processed signal, for rewriting the program in order to change the contents of the processing. Program data is prevented from being output in synchronism with a sampling clock generated at the timing of an input signal. This design can minimize noise occurring due to a change in the algorithm of the signal processing during signal processing. Further, in the case where a program for a separate signal processing circuit is rewritten in response to an instruction that is given from outside at an arbitrary timing, noise can also be minimized by proceeding with the rewriting in synchronism with a sampling clock.
摘要翻译：在内部存储程序的信号处理装置中，并且根据诸如算术运算或延迟处理的程序对接收信号执行一系列处理，并且输出处理的信号，以便重写该程序以便改变内容的处理。防止与在输入信号的定时产生的采样时钟同步输出节目数据。该设计可以最小化由于信号处理期间的信号处理的算法的改变而发生的噪声。此外，在响应于在任意定时从外部给出的指令来重写用于单独信号处理电路的程序的情况下，也可以通过与采样时钟同步地进行重写来最小化噪声。

5. 发明申请

US20060111908A1 Data synthesis apparatus and program 有权
公开(公告)号：US20060111908A1
公开(公告)日：2006-05-25
申请号：US11285601
申请日：2005-11-21
申请人： Goro Sakata
发明人： Goro Sakata
IPC分类号： G10L13/00
CPC分类号： G10L13/033 , G10H7/002 , G10H2250/285 , G10H2250/481 , G10L25/90
摘要： A data synthesis apparatus detects the start of a period of voice waveform data, stores the voice waveform data in a first storage device, starting with its part indicative of the start of the detected period. The apparatus stores in a second storage device musical-sound waveform data including information on pulses having a specified period, and then performs a convolution operation on the voice waveform data stored in the first storage device and the musical-sound waveform data stored in the second storage device, thereby outputting synthesized waveform data synchronized with the specified period of the musical-sound waveform data stored in the second storage device.

6. 发明授权

US5502277A Filter device and electronic musical instrument using the filter device 失效
公开(公告)号：US5502277A
公开(公告)日：1996-03-26
申请号：US432672
申请日：1995-05-02
申请人： Goro Sakata
发明人： Goro Sakata
IPC分类号： H03H17/00 , H03H17/02 , H03H17/04 , G10H1/12 , G10H5/00
CPC分类号： H03H17/04 , H03H17/0294 , Y10S84/09
摘要： A filter device has a variable frequency cut-off characteristic as well as a variable gain characteristic. To obtain these characteristics, a filtering operation is performed on data input thereto on the basis of a transmission function, which is defined by gain G for predetermined frequencies and a frequency fo corresponding to a phase at an intersection of a unit circle and a straight line intersecting at right angles a real axis passing a midpoint between a polar and a zero point on the real axis on Z-plane. An electronic musical instrument employing the filter device can change amplitudes of frequency components involved in musical tones on the basis of performance data, generating musical tones involving complex harmonics and having various tone colors, as a conventional acoustic instrument does.

7. 发明授权

US07523037B2 Data synthesis apparatus and program 有权
标题翻译：数据合成装置和程序
公开(公告)号：US07523037B2
公开(公告)日：2009-04-21
申请号：US11285601
申请日：2005-11-21
申请人： Goro Sakata
发明人： Goro Sakata
IPC分类号： G10L21/00 , G10L19/14 , G10L13/00 , H03G3/00 , G10H1/00
CPC分类号： G10L13/033 , G10H7/002 , G10H2250/285 , G10H2250/481 , G10L25/90
摘要： A data synthesis apparatus detects the start of a period of voice waveform data, stores the voice waveform data in a first storage device, starting with its part indicative of the start of the detected period. The apparatus stores in a second storage device musical-sound waveform data including information on pulses having a specified period, and then performs a convolution operation on the voice waveform data stored in the first storage device and the musical-sound waveform data stored in the second storage device, thereby outputting synthesized waveform data synchronized with the specified period of the musical-sound waveform data stored in the second storage device.
摘要翻译：数据合成装置检测语音波形数据的周期的开始，将语音波形数据存储在第一存储装置中，从表示检测周期的开始的部分开始。该装置在第二存储装置中存储包括具有指定周期的脉冲的信息的音乐声波形数据，然后对存储在第一存储装置中的声音波形数据和存储在第二存储装置中的音乐声波形数据进行卷积运算从而输出与存储在第二存储装置中的音乐声波形数据的指定周期同步的合成波形数据。

8. 发明授权

US07734860B2 Signal processor 有权
标题翻译：信号处理器
公开(公告)号：US07734860B2
公开(公告)日：2010-06-08
申请号：US11704042
申请日：2007-02-08
申请人： Goro Sakata
发明人： Goro Sakata
IPC分类号： G06F13/00
CPC分类号： G06F13/161
摘要： For every sampling period of a DSP 100, a timing generator 200 requests a CPU 300 to release a bus and provides a DSP 100 access time period to make an external memory 400 access the DSP 100 by occupying the bus released according to the request. In the DSP 100, during the DSP access time period, a memory interface section 11 executes read/write processing in which waveform data read from the external memory 400 is stored in an internal memory 12 and waveform data read from the internal memory 12 is written into the external memory 400 according to the command stored in an access command memory 10. At the same time, an operation section 13 executes operation processing by using the waveform data stored in the internal memory 12 independently of the read/write processing.
摘要翻译：对于DSP 100的每个采样周期，定时发生器200请求CPU300释放总线并提供DSP100访问时间段，以使得外部存储器400通过占用根据请求释放的总线来访问DSP 100。在DSP100中，在DSP访问时间段期间，存储器接口部分11执行读/写处理，其中从外部存储器400读取的波形数据被存储在内部存储器12中，并且从内部存储器12读取的波形数据被写入根据存储在访问命令存储器10中的命令将其输入到外部存储器400中。同时，操作部分13独立于读/写处理，通过使用存储在内部存储器12中的波形数据来执行操作处理。

9. 发明申请

US20070233934A1 Signal processor 有权
标题翻译：信号处理器
公开(公告)号：US20070233934A1
公开(公告)日：2007-10-04
申请号：US11704042
申请日：2007-02-08
申请人： Goro Sakata
发明人： Goro Sakata
IPC分类号： G06F12/00
CPC分类号： G06F13/161
摘要： For every sampling period of a DSP 100, a timing generator 200 requests a CPU 300 to release a bus and provides a DSP 100 access time period to make an external memory 400 access the DSP 100 by occupying the bus released according to the request. In the DSP 100, during the DSP access time period, a memory interface section 11 executes read/write processing in which waveform data read from the external memory 400 is stored in an internal memory 12 and waveform data read from the internal memory 12 is written into the external memory 400 according to the command stored in an access command memory 10. At the same time, an operation section 13 executes operation processing by using the waveform data stored in the internal memory 12 independently of the read/write processing.
摘要翻译：对于DSP 100的每个采样周期，定时发生器200请求CPU300释放总线并提供DSP100访问时间段，以使得外部存储器400通过占用根据请求释放的总线来访问DSP 100。在DSP100中，在DSP访问时间段期间，存储器接口部分11执行读/写处理，其中从外部存储器400读取的波形数据被存储在内部存储器12中，并且从内部存储器12读取的波形数据被写入根据存储在访问命令存储器10中的命令，将其存储到外部存储器400中。同时，操作部分13独立于读/写处理，通过使用存储在内部存储器12中的波形数据执行操作处理。

10. 发明授权

US5450350A Filter device and electronic musical instrument using the filter device 失效
标题翻译：过滤装置和电子乐器使用过滤装置
公开(公告)号：US5450350A
公开(公告)日：1995-09-12
申请号：US82059
申请日：1993-06-23
申请人： Goro Sakata
发明人： Goro Sakata
IPC分类号： H03H17/00 , H03H17/02 , H03H17/04 , G06F15/31
CPC分类号： H03H17/04 , H03H17/0294 , Y10S84/09
摘要： A filter device has a variable frequency cut-off characteristic as well as a variable gain characteristic. To obtain these characteristics, a filtering operation is performed on data input thereto on the basis of a transmission function, which is defined by gain G for predetermined frequencies and a frequency fo corresponding to a phase at an intersection of a unit circle and a straight line intersecting at right angles a real axis passing a midpoint between a polar and a zero point on the real axis on Z-plane. An electronic musical instrument employing the filter device can change amplitudes of frequency components involved in musical tones on the basis of performance data, generating musical tones involving complex harmonics and having various tone colors, as a conventional acoustic instrument does.
摘要翻译：滤波器装置具有可变频率截止特性以及可变增益特性。为了获得这些特性，基于由预定频率的增益G定义的发送功能和对应于单位圆和直线的交点处的相位的频率fo来执行对其输入的数据的滤波操作通过Z平面上的实轴上的极点和零点之间的中点的实心轴线成直角相交。采用该滤波装置的电子乐器可以根据演奏数据改变音乐中所涉及的频率分量的振幅，产生涉及复合谐波的乐音并具有各种音色，如传统的声学乐器那样。

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