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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
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。
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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
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。
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3.发明授权Signal processing apparatus for repeatedly performing a same processing on respective output channels in time sharing manner 失效信号处理装置，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
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。
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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
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。
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公开(公告)号：US5010799A
公开(公告)日：1991-04-30
申请号：US496128
申请日：1990-03-19
申请人： Kikuji Tanaka , Kohtaro Hanzawa
发明人： Kikuji Tanaka , Kohtaro Hanzawa
CPC分类号： G10H1/344 , G10H1/0558 , G10H2220/295
摘要： An electronic keyboard instrument has a plurality of key displacement sensors disposed in relation to respective keys of a keyboard. Each sensor detects a continuously variable key displacement induced by the key operation to provide an analog signal indicative of the displacement. An analog-to-digital converter digitizes the analog signal at a predetermined sampling rate to derive a stream of digital samples of key displacement. A control, which operates based on a predetermined tone control algorithm receives and analyzes the stream of digital samples. According to the analysis, tone parameters such as envelope and vibrato are produced for controlling the characteristics of a tone, so that a tone having a very dynamic key touch response is developed. In a preferred embodiment, there are provided a plurality of tone control algorithms adapted to process the stream of key displacement samples in manners different from one another. A manually operative selector selects the desired one of the algorithms to be used by the control during the play of the instrument. "
摘要翻译： 电子键盘乐器具有相对于键盘的各个键布置的多个键位移传感器。 每个传感器检测由键操作引起的连续可变的键位移，以提供表示位移的模拟信号。 模数转换器以预定的采样速率对模拟信号进行数字化以导出关键位移的数字采样流。 基于预定音调控制算法操作的控制器接收并分析数字样本流。 根据分析，产生诸如包络和颤音的音调参数以控制音调的特性，从而开发出具有非常动态的键触摸响应的音调。 在优选实施例中，提供了多个音调控制算法，其适于以彼此不同的方式处理关键位移样本流。 手动操作选择器在乐器播放期间选择要由控制使用的所需算法。
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公开(公告)号：US5410603A
公开(公告)日：1995-04-25
申请号：US913581
申请日：1992-07-14
申请人： Shiro Ishiguro , Masatoshi Watanuki , Toshiaki Kawanishi , Kohtaro Hanzawa , Hiroyuki Sasaki , Jun Yoshino
发明人： Shiro Ishiguro , Masatoshi Watanuki , Toshiaki Kawanishi , Kohtaro Hanzawa , Hiroyuki Sasaki , Jun Yoshino
CPC分类号： G10H7/006 , G10H1/06 , G10H3/186 , G10H7/004 , G10H2210/251 , G10H2210/281 , G10H2210/295 , G10H2210/311 , G10H2250/105
摘要： When a plurality of effects are simultaneously applied to an input audio signal, a plurality of effect-algorithms each for applying solely an effect to the input signal are stored in a memory, and a plurality of combination-algorithms or combination-data which represent combinations of the effects and orders in which effects are applied to the input audio signal are stored in the memory. When one of the combination-algorithms or the combination-data is selected, effect-algorithms included in the selected combination-algorithm or combination-data are selectively read out from the memory. A program for applying effects in a predetermined combination and order is written by CPU based on the read out effect-algorithms and combination-algorithm or combination-data. Receiving the program, DSP successively applies effects to the input audio signal in accordance with the program. As a result, the present effector needs less memory capacity than the conventional effector in which a number of programs consisting of combinations of effect-algorithms are previously stored. A multi-effector comprised of a connection of a digital effect adding device and an analog effect adding device, is provided with a memory having a plurality of memory areas for storing audio signals. An input audio signal, an input signal to the analog effect adding device and an output signal of the digital effect adding device are stored in respective memory areas of the memory. Whether either of input signals is supplied to the digital effect adding device or whether the output signal of the digital effect adding device is input to the analog effect adding device or the output signal is output as a final signal are decided by operation of an externally operated switch. In this way, the order in which effects are applied can be altered independently of the connection of the above two effect adding devices.
摘要翻译： 当多个效果被同时施加到输入音频信号时，每个用于仅对输入信号施加效果的多个效果算法被存储在存储器中，以及表示组合的多个组合算法或组合数据 将影响应用于输入音频信号的效果和顺序存储在存储器中。 当选择组合算法或组合数据之一时，包括在所选组合算法或组合数据中的效果算法被选择性地从存储器中读出。 基于读出效果算法和组合算法或组合数据，由CPU写入以预定的组合和顺序应用效果的程序。 接收程序后，DSP根据程序对输入音频信号进行连续的应用。 因此，当前效应器需要比常规效应器更少的存储容量，其中预先存储了由效果算法的组合组成的多个节目。 由数字效果添加装置和模拟效果添加装置的连接构成的多效果器具有存储器，该存储器具有用于存储音频信号的多个存储区域。 输入音频信号，到模拟效果添加装置的输入信号和数字效果添加装置的输出信号被存储在存储器的相应存储区域中。 输入信号是否被提供给数字效果添加装置，或者数字效果添加装置的输出信号是输入到模拟效果添加装置还是输出信号作为最终信号输出，由外部操作的 开关。 以这种方式，可以独立于上述两种效果添加装置的连接来改变应用效果的顺序。
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7.发明授权
公开(公告)号：US5136912A
公开(公告)日：1992-08-11
申请号：US663729
申请日：1991-03-01
摘要： A tone generation control unit has four waveform read/write channels for selectively the reading or writing data in a waveform memory. A plurality of waveform signals stored in the waveform memory are converted into analog signals to be subjected to timbre and tone volume control through voltage-controlled filters and voltage-controlled amplifiers before being fed to a mixing adder. An output signal of the mixing adder is converted into a digital signal which is stored in the waveform memory again through processing of the tone generation control unit. The stored converted output from the mixing adder is later used again as a new sound source waveform which is operated on to produce tones.
摘要翻译： 音调产生控制单元具有四个波形读/写通道，用于选择性地在波形存储器中读取或写入数据。 存储在波形存储器中的多个波形信号通过压控滤波器和压控放大器被转换为模拟信号，以便在馈送到混频加法器之前进行音调和音量的控制。 混合加法器的输出信号通过音调产生控制单元的处理被再次转换成存储在波形存储器中的数字信号。 来自混合加法器的存储的转换输出稍后再被用作操作以产生音调的新的声源波形。
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公开(公告)号：US5025700A
公开(公告)日：1991-06-25
申请号：US456617
申请日：1989-12-22
摘要： A tone generation control unit has four waveform read/write channels for selectively the reading or writing data in a waveform memory. A plurality of waveform signals stored in the waveform memory are converted into analog signals to be subjected to timbre and tone volume control through voltage-controlled filters and voltage-controlled amplifiers before being fed to a mixing adder. An output signal of the mixing adder is converted into a digital signal which is stored in the waveform memory again through processing of the tone generation control unit. The stored converted output from the mixing adder is later used again as a new sound source waveform which is operated on to produce tones.
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公开(公告)号：US4864625A
公开(公告)日：1989-09-05
申请号：US902513
申请日：1986-09-02
摘要： An input waveform signal is converted in an A/D converter into a digital signal to be written in a waveform memory under control of a tone generation control unit. The written digital signal is read out from the waveform memory with a designated delay time. The input waveform signal and the digital signal read out from the waveform memory are converted in a D/A converter into analog signals which are fed through VCFs and VCAs so as to be sounded. Further, in the above arrangement the timbre and tone volume controls are done independently for the individual waveform read/write channels through VCFs 12a to 12d and VCAs 13a to 13d. Thus, it is possible to obtain a further effected sound.
摘要翻译： 输入波形信号在A / D转换器中被转换为数字信号，以在音调产生控制单元的控制下被写入波形存储器。 写入的数字信号以指定的延迟时间从波形存储器读出。 从波形存储器读出的输入波形信号和数字信号在D / A转换器中被转换成通过VCF和VCA馈送以便发声的模拟信号。 此外，在上述配置中，对于通过VCF 12a至12d和VCA 13a至13d的各个波形读/写通道独立完成音色和音量控制。 因此，可以获得进一步影响的声音。
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公开(公告)号：US5262582A
公开(公告)日：1993-11-16
申请号：US856177
申请日：1992-03-23
申请人： Kohtaro Hanzawa , Kunihiro Sugita
发明人： Kohtaro Hanzawa , Kunihiro Sugita
CPC分类号： G10H7/04 , G10H1/08 , G10H7/008 , G10H2250/035
摘要： The position of a connecting portion between waveforms can be arbitrarily set when a plurality of waveform data is obtained by changing pitch widths of stored external sound waveform data, when a read rate of the waveform data is increased or decreased and the readout waveform data is synthesized, or when the waveform is changed from one waveform to another waveform. In addition, a plurality of loop reproduction cycles can be arbitrarily set when the waveform data is to be read out. In loop reproduction, two items of waveform data having different phases between the preset start and end addresses can be repeatedly read out and synthesized, and their mixing ratios can be changed as a function of time, thereby performing loop reproduction so as not to abruptly change amplitude values of the waveforms.
摘要翻译： 当波形数据的读取速率增加或减小并且读出的波形数据被合成时，当通过改变存储的外部声音波形数据的音调宽度获得多个波形数据时，可以任意设置波形之间的连接部分的位置 ，或当波形从一个波形改变到另一个波形时。 此外，当要读出波形数据时，可以任意设置多个循环再生循环。 在循环再现中，可以重复地读出并合成在预设起始地址和结束地址之间具有不同相位的两个波形数据项，并且它们的混合比可以随着时间的变化而改变，从而执行循环再现以便不突然改变 波形幅度值。
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