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1. 发明授权

US4030395A Musical-tone signal forming apparatus for an electronic musical instrument 失效
标题翻译：用于电子乐器的乐音信号形成装置
公开(公告)号：US4030395A
公开(公告)日：1977-06-21
申请号：US584367
申请日：1975-06-05
申请人： Toshio Kugisawa
发明人： Toshio Kugisawa
IPC分类号： G10H1/057 , G10H7/00 , G10H7/12 , G10H5/02
CPC分类号： G10H7/12 , G10H2250/591
摘要： A musical-tone signal forming apparatus for an electronic musical instrument is characterized by the use of a musical-tone waveform setting circuit by which repeatedly at least one cycle of a musical-tone waveform is sampled at n points so the amplitude thereof at each sampling point can be compared with the amplitude thereof at the preceding sampling point and an increase signal, an equal signal, or a decrease signal is generated as a digital signal. Also employed is an envelope setting circuit in which an envelope of a musical tone is sampled at m points and the analog amount thereof at each sampling point is generated as a corresponding digital signal. An integrating circuit is used in which the digital signals of the envelope setting circuit are accumulatively added or subtracted according to the digital signals of the musical-tone waveform setting circuit. The output signal of the integrating circuit is taken out through a D-A converter as a musical-tone signal. The integrating circuit comprises full adders connected in tandem and latch circuits provided on the output side thereof. AND circuits and exclusive OR circuits are interposed between the musical-tone waveform setting circuit and the envelope setting circuit and the full adders. The musical-tone waveform setting circuit is provided at its input side with a clock pulse generator, which generates a clock pulse signal corresponding to the frequency of a musical-scale tone by use of an order pulse generator and a counter. Each of the latch circuits is operated at the descending portion of each pulse generated by the clock pulse generator.
摘要翻译：用于电子乐器的乐音信号形成装置的特征在于使用一种乐音波形设置电路，通过该乐曲波形设置电路，在n个点上重复地对乐音波形进行至少一个周期的采样，点可以与前一采样点的幅度进行比较，并且生成增加信号，相等信号或减小信号作为数字信号。还采用包络设定电路，其中以m个点对乐音的包络采样，并且其每个采样点的模拟量被生成为相应的数字信号。使用积分电路，其中根据乐音波形设置电路的数字信号累加或相减包络线设置电路的数字信号。积分电路的输出信号作为音调信号通过D-A转换器取出。积分电路包括串联连接的全加器和设置在输出侧的锁存电路。 AND电路和异或电路插入在乐音波形设置电路和信封设置电路和全加器之间。乐音波形设置电路在其输入侧设置有时钟脉冲发生器，该时钟脉冲发生器通过使用定单脉冲发生器和计数器产生对应于音阶音调的频率的时钟脉冲信号。每个锁存电路在由时钟脉冲发生器产生的每个脉冲的下降部分工作。

2. 发明授权

US4254681A Musical waveshape processing system 失效
标题翻译：音乐波形处理系统
公开(公告)号：US4254681A
公开(公告)日：1981-03-10
申请号：US892328
申请日：1978-03-31
申请人： Toshio Kugisawa , Noriji Sakashita
发明人： Toshio Kugisawa , Noriji Sakashita
IPC分类号： G10H1/057 , G10H1/18 , G10H7/08 , G10H7/10 , G10F1/00 , G06F1/02
CPC分类号： G10H7/08 , G10H1/0575 , G10H1/187 , G10H7/10 , G10H2250/201
摘要： A musical waveshape processing system for an electronic musical instrument in which time-division time slots are set corresponding to a plurality of channels for producing notes selected on keyboards of the electronic musical instrument and the notes are each produced by repeatedly calculating the musical waveshape amplitude value of each channel in each time-division time slot. A musical waveshape calculator is provided which calculates the musical waveshape amplitude value as f(t)=at.sup.2 +bt+c based on waveshape data a, b and c and address information t. A multiplier is provided by which the value of an envelope synchronized with the time-division time slot is multiplied by the waveshape data a, b and c. A tone control circuit is provided which counts time-division multiplex signals of the ON-OFF state of a tone selection switch with a counter every frame of the time-division multiplexing and compares the count values of two successive frames to detect a change in the state of the tone selection switch from non-coincidence between the both count value, thereby controlling the musical waveshape.
摘要翻译：一种用于电子乐器的音乐波形处理系统，其中通过重复地计算音乐波形幅度值来产生其中设置对应于用于产生在电子乐器的键盘上选择的音符的多个声道的时分时隙在每个时分时隙中的每个信道。提供了一种音乐波形计算器，其基于波形数据a，b和c以及地址信息t，将音乐波形幅值计算为f（t）= at2 + bt + c。提供乘法器，通过该乘法器将与时分时隙同步的包络的值乘以波形数据a，b和c。提供了一种音调控制电路，其对每个时分多路复用的每一帧计数一个音调选择开关的ON-OFF状态的时分复用信号，并比较两个连续帧的计数值，以检测音调选择开关的状态从两个计数值之间的非重合，从而控制音乐波形。

3. 发明授权

US4059040A Tone-source apparatus for electronic musical instrument 失效
标题翻译：电子乐器音源设备
公开(公告)号：US4059040A
公开(公告)日：1977-11-22
申请号：US612174
申请日：1975-09-10
申请人： Nobuharu Obayashi , Hikaru Hashizume , Noriji Sakashita , Seiji Kameyama , Sadaaki Ezawa , Toshio Kugisawa , Yutaka Washiyama , Tatsunori Kondo , Hironori Watanabe
发明人： Nobuharu Obayashi , Hikaru Hashizume , Noriji Sakashita , Seiji Kameyama , Sadaaki Ezawa , Toshio Kugisawa , Yutaka Washiyama , Tatsunori Kondo , Hironori Watanabe
IPC分类号： G10H7/00 , G10H1/06 , G10F1/00
CPC分类号： G10H7/00
摘要： A tone source apparatus for an electronic musical instrument is characterized in that at least one cycle of a musical-tone waveform, which it is desired be produced, is depicted as a sequence of section lines and a series of pulses having regular intervals is varied, by a pulse-density varying circuit, in pulse density in accordance with the degrees of inclination of the respective section lines. The resultant series of pulses having varied pulse density is formed, by a waveform forming circuit, into the desired musical tone waveform. The pulse-density varying circuit comprises a first counter to which is applied as an input, the aforementioned series of pulses having regular intervals. A second counter is connected, in series or in parallel, to the first counter and a decoder is connected to an output terminal of the second counter. A memory circuit is connected to the output terminals of the decoder. The memory circuit comprises a plurality of pulse-density setting portions which set frequency-dividing ratios for the first counter for selecting output pulse-densities. The memory circuit also comprises a plurality of section range setting portions which set frequency-dividing ratios for the second counter for selecting output time intervals of signals obtained at respective output terminals of the decoder.
摘要翻译：一种用于电子乐器的音源设备的特征在于，将要产生乐曲的波形的至少一个周期描绘为一段切片线，并且改变具有规则间隔的一系列脉冲，通过脉冲密度变化电路，根据相应截面线的倾斜度的脉冲密度。通过波形形成电路形成具有变化的脉冲密度的所得一系列脉冲到所需的乐音波形中。脉冲密度变化电路包括作为输入施加的第一计数器，上述一系列脉冲具有规则的间隔。第二计数器串联或并联连接到第一计数器，解码器连接到第二计数器的输出端。存储电路连接到解码器的输出端。存储电路包括多个脉冲浓度设置部分，其设置用于选择输出脉冲密度的第一计数器的分频比。存储电路还包括多个区间设置部分，其设置第二计数器的分频比，用于选择在解码器的各个输出端获得的信号的输出时间间隔。

4. 发明授权

US3982461A Musical-tone signal forming apparatus for electronic musical instrument 失效
标题翻译：用于电子乐器的乐音信号形成装置
公开(公告)号：US3982461A
公开(公告)日：1976-09-28
申请号：US584368
申请日：1975-06-05
申请人： Toshio Kugisawa
发明人： Toshio Kugisawa
IPC分类号： G10H1/057 , G10H7/00 , G10H7/12 , G10F1/00
CPC分类号： G10H7/12 , G10H2250/591
摘要： A musical-tone signal forming apparatus is provided for an electronic musical instrument. The apparatus comprises a musical-tone wave form setting circuit in which at least one cycle of a musical-tone wave form is repeatedly subjected to sampling at n points and the amplitude at each sampling point is compared with the amplitude at the preceeding sampling point. An increase, equal or decrease signal is generated in the form of a digital signal to indicate the relationship determined. An envelope setting circuit is provided in which an envelope of a desired musical-tone is subjected to sampling at m point and the analog amount at each sampling point is generated sequentially as a digital signal corresponding thereto. A pulse generating circuit whereby a pulse signal having a number corresponding to the digital signal value produced by the envelope setting circuit is repeatedly generated is employed. Also employed is a distribution circuit including addition and subtraction output terminals in which the output signals of the pulse generating circuit are distributed either to the addition output terminal or the subtraction output terminal according to the digital signals produced by the musical-tone wave form setting circuit. There is also used an up-down counter in which output signals of the addition output signal and the subtraction output terminal are respectively added or subtracted. A D-A converter is provided in which digital signals generated by the up-down counter are converted into analog signals.
摘要翻译：为电子乐器提供乐音信号形成装置。该装置包括乐音波形设置电路，其中音调波形的至少一个周期在n个点被重复地进行采样，并且将每个采样点处的振幅与先前采样点处的幅度进行比较。以数字信号的形式产生增加，等于或减小的信号以指示确定的关系。提供一种包络设置电路，其中所需乐曲的包络在m点进行采样，并且在每个采样点处的模拟量被顺序地生成为与其对应的数字信号。采用脉冲发生电路，由此重复产生具有与由包络设置电路产生的数字信号值相对应的数字的脉冲信号。还采用包括加法和减法输出端的分配电路，其中脉冲发生电路的输出信号根据由乐音波形设置电路产生的数字信号分配到加法输出端或减法输出端。还可以使用加法计数器，其中分别添加或减去加法输出信号和减法输出端子的输出信号。提供了一种D-A转换器，其中由升降计数器产生的数字信号被转换为模拟信号。

5. 发明授权

US3982460A Musical-tone-waveform forming apparatus for an electronic musical instrument 失效
标题翻译：用于电子乐器的乐音波形形成装置
公开(公告)号：US3982460A
公开(公告)日：1976-09-28
申请号：US613931
申请日：1975-09-16
申请人： Nobuharu Obayashi , Hikaru Hashizume , Noriji Sakashita , Seiji Kameyama , Sadaaki Ezawa , Toshio Kugisawa , Yutaka Washiyama , Tatsunori Kondo , Hironori Watanabe
发明人： Nobuharu Obayashi , Hikaru Hashizume , Noriji Sakashita , Seiji Kameyama , Sadaaki Ezawa , Toshio Kugisawa , Yutaka Washiyama , Tatsunori Kondo , Hironori Watanabe
IPC分类号： G10H7/00 , G10H1/057 , G10H7/12 , G10F1/00
CPC分类号： G10H1/057 , G10H7/12 , G10H2250/591
摘要： An apparatus for forming a musical-tone waveform for an electronic musical instrument characterized in that at least one cycle of a musical-tone waveform, which it is desired be produced, is divided in amplitude by dividing lines at equal intervals and sampling points on a time axis are determined from respective crossing points between the waveform and the dividing lines and the distance between the initial and the final sampling points is represented by an appropriate number of pulses so that each sampling point may be represented by a pulse number. There is further provided a memory circuit wherein each sampling point, that is, the pulse number thereof is set up in the form of a digital signal. Additionally, there is a set up in the form of a digital signal a tendency such as increase, decrease or equal at each sampling point with reference to the preceding sampling point. An envelope setting device is used wherein the envelope of a muscial-tone waveform, which it is desired be produced, is subjected to sampling and the analog amount of each sampling point is set up in the form of digital signal. An accumulatively adding device is employed whereby the output digital signal of the envelope setting device is accumulatively added to or subtracted from the output digital signal of the memory circuit. The accumulatively adding device is connected at its output terminal to a D-A converter for converting its output signal into an analog signal.
摘要翻译：一种用于形成用于电子乐器的乐音波形的装置，其特征在于，要产生希望产生的乐音波形的至少一个周期通过以等间隔的分割线和时间轴由波形和分割线之间的各个交叉点确定，并且初始和最终采样点之间的距离由适当数量的脉冲表示，使得每个采样点可以由脉冲数表示。还提供了一种存储电路，其中每个采样点，即其脉冲数量以数字信号的形式被设置。此外，以数字信号的形式设置参考前述采样点的每个采样点的增加，减小或相等的趋势。使用信封设定装置，其中要产生希望产生的乐音波形的包络进行采样，并且以数字信号的形式设置每个采样点的模拟量。使用累加装置，由此将包络线设定装置的输出数字信号累积地加到或从存储电路的输出数字信号中减去。累加装置在其输出端连接到D-A转换器，用于将其输出信号转换为模拟信号。

6. 发明授权

US4348928A Electronic musical instrument 失效
标题翻译：电子乐器
公开(公告)号：US4348928A
公开(公告)日：1982-09-14
申请号：US834427
申请日：1977-09-19
申请人： Noriji Sakashita , Toshio Kugisawa , Hironori Watanabe , Hiroshi Kitagawa
发明人： Noriji Sakashita , Toshio Kugisawa , Hironori Watanabe , Hiroshi Kitagawa
IPC分类号： G10H1/057 , G10H1/18 , G10H7/04 , G10H1/00
CPC分类号： G10H1/18 , G10H1/0575 , G10H7/045
摘要： An electronic musical instrument of digital processing in which required musical waveshape data are calculated by a tone control device to obtain a complex musical waveshape and the complex musical waveshape is read out at a read frequency produced by a key closure to generate the selected musical note. The electronic musical instrument has a calculator for calculating a musical waveshape in association with the operation of the tone control device in a period of time independent of the period of the generated musical note, a read-out signal generator for producing a memory read-out signal based on the closure of the key switch, a period detector for detecting by one period of each channel resulting from the closure of the key switch, first and second memories for storing the musical waveshape from the calculator, the stored musical waveshape being read out by the read-out signal, and means for achieving such a control that while the first memory is read out, the musical waveshape is stored in the second memory, that the read output signal from the first memory is sequentially written in the second memory by the output signal from the period detector in synchronism with the period of the generated musical note and that after completion of reading out of a new first memory, the musical waveshape from the calculator is stored in the first memory.
摘要翻译：数字处理的电子乐器，其中由音调控制装置计算所需的音乐数据，以获得复杂的音乐波形，并以由钥匙闭合产生的读取频率读出复合的音乐波形，以产生选定的音符。该电子乐器具有计算器，用于在独立于所生成的音符的周期的时间段内计算与音调控制装置的操作相关联的音乐波形;读出信号发生器，用于产生存储器读出基于钥匙开关的关闭的信号，用于由钥匙开关闭合导致的每个通道的一个周期检测的周期检测器，用于存储来自计算器的音乐波形的第一和第二存储器，存储的音乐波形被读出通过读出信号，以及用于实现这样的控制的装置，即当读出第一存储器时，将音乐波形存储在第二存储器中，来自第一存储器的读出的输出信号被顺序地写入第二存储器中来自周期检测器的输出信号与所生成的音符的周期同步，以及完成读出新的第一存储器之后的音频来自计算器的波形存储在第一个存储器中。

7. 发明授权

US4184402A Electronic musical instrument 失效
标题翻译：电子乐器
公开(公告)号：US4184402A
公开(公告)日：1980-01-22
申请号：US863953
申请日：1977-12-23
申请人： Toshio Kugisawa
发明人： Toshio Kugisawa
IPC分类号： G10H7/04 , G10H5/00
CPC分类号： G10H7/045
摘要： A digital electronic musical instrument which produces musical notes by approximately reproducing a waveshape based on information of points of extremal values on a musical waveshape, storing the approximate waveshape after sampling it with the number of the frequency at which the notes are to be produced and reading out the stored waveshape with a predetermined clock.
摘要翻译：一种数字电子乐器，其通过基于音乐波形上的极值值的信息近似地再现波形来产生音符，将采样之后的近似波形存储为要生成音符的频率的数量和读取用预定的时钟输出存储的波形图。

8. 发明授权

US4174649A Electronic musical instrument 失效
标题翻译：电子乐器
公开(公告)号：US4174649A
公开(公告)日：1979-11-20
申请号：US842523
申请日：1977-10-17
申请人： Nobuharu Obayashi , Hikaru Hashizume , Noriji Sakashita , Seiji Kameyama , Sadaaki Ezawa , Hironori Watanabe , Tatsunori Kondo , Toshio Kugisawa , Yutaka Washiyama
发明人： Nobuharu Obayashi , Hikaru Hashizume , Noriji Sakashita , Seiji Kameyama , Sadaaki Ezawa , Hironori Watanabe , Tatsunori Kondo , Toshio Kugisawa , Yutaka Washiyama
IPC分类号： G10H7/00 , G10H1/00 , G10H5/00
CPC分类号： G10H7/00
摘要： An electronic musical instrument which has a key assignor or assignors of one or more channels for generating and temporarily storing key code corresponding to key depression and release, respectively, a memory for storing waveshape information such as inclination and amplitude variations of a required musical waveshape divided into a plurality of periods so as to read out the waveshape information corresponding to the key code, a plurality of tone source devices, each including waveshape generators of different sound ranges respectively corresponding to keyboard switches in the same channel of each key assignor, the tone source device reading out the waveshape information from the memory on a time divided basis to generate from the waveshape generators waveshapes of different frequencies based on the read out waveshape information, and means for simultaneously actuating the corresponding waveshape generators by the key code from the key assignor and coupler information.
摘要翻译：一种电子乐器，其具有键分配器或一个或多个声道的转换器，用于分别产生和临时存储与键按下和释放相对应的键码，存储器用于存储所需音乐波形的波形信息，例如倾斜和幅度变化分别对应于每个键分配器的同一通道中的键盘开关，读出与键码相对应的波形信息的多个音源装置，每个音源装置包括不同声音范围的波形发生器，源装置基于读出的波形信息从时间划分的基础上从存储器读出波形信息，以从波形发生器波形生成不同频率的波形，以及用于通过密钥转发器的密钥代码同时致动相应波形生成器的装置和耦合器信息。

9. 发明授权

US4141268A Keyboard apparatus for an electronic musical instrument 失效
标题翻译：电子乐器的键盘装置
公开(公告)号：US4141268A
公开(公告)日：1979-02-27
申请号：US811639
申请日：1977-06-30
申请人： Toshio Kugisawa
发明人： Toshio Kugisawa
IPC分类号： G10H1/18 , G10H1/00
CPC分类号： G10H1/185 , Y10S84/02
摘要： Keyboard apparatus for an electronic musical instrument in which a particular code is assigned to each of keys of the keyboard and which is provided with a multiplexer circuit for detecting the depression of the key corresponding to an input code, means for sequentially generating the codes of the keys, memory means for storing the codes, a comparator circuit for comparing the outputs from the memory means and the code generating means to provide a coincidence signal when the both outputs are coincident with each other, a cycle control circuit for controlling a key ON cycle and a key OFF cycle in distinction from each other, and gate means for selecting the output code from the code generating means and the code of the memory means with the key ON cycle and the key OFF cycle to output to the multiplexer circuit. In the key ON cycle, the multiplexer circuit detects that the key having not been depressed yet is newly depressed, and stores it in the memory means. In the key OFF cycle, the multiplexer circuit detects that the key already depressed is newly released, and erases the content of the memory means.
摘要翻译：一种用于电子乐器的键盘装置，其中特定码被分配给键盘的每个键并且设置有用于检测对应于输入码的键的按下的多路复用器电路的装置，用于顺序地生成键，用于存储代码的存储装置，用于比较来自存储装置的输出和代码产生装置的比较器电路，以在两个输出彼此一致时提供一致信号;循环控制电路，用于控制键开启周期和一个关键的关闭周期，以及门装置，用于通过钥匙开启周期和钥匙关闭周期选择来自代码产生装置的输出代码和存储装置的代码，以输出到多路复用器电路。在键ON周期中，多路复用器电路检测到尚未按下的键新被按下，并将其存储在存储装置中。在关闭关闭周期中，多路复用器电路检测到已经按下的键新被释放，并且擦除存储器装置的内容。

10. 发明授权

US4023454A Tone source apparatus for an electronic musical instrument 失效
标题翻译：用于电子乐器的音源设备
公开(公告)号：US4023454A
公开(公告)日：1977-05-17
申请号：US608535
申请日：1975-08-28
申请人： Nobuharu Obayashi , Hikaru Hashizume , Noriji Sakashita , Seiji Kameyama , Sadaaki Ezawa , Toshio Kugisawa , Yutaka Washiyama , Tatsunori Kondo , Hironori Watanabe
发明人： Nobuharu Obayashi , Hikaru Hashizume , Noriji Sakashita , Seiji Kameyama , Sadaaki Ezawa , Toshio Kugisawa , Yutaka Washiyama , Tatsunori Kondo , Hironori Watanabe
IPC分类号： G10H7/08 , G10H7/10 , G10H1/00
CPC分类号： G10H7/10 , G10H7/08 , G10H2250/565
摘要： A tone source apparatus is provided for an electronic musical instrument. It comprises a memory circuit which has a plurality of addresses and is so arranged that where at least one cycle of a musical tone waveform is divided into p units and a waveform in each section range is represented by a formula containing the abscissa as its variable, a coefficient and a section range quantum number of each formula is memorized in the form of digital signals in the corresponding address. Also included are a clock pulse oscillator, a counter means for counting output clock pulses of the clock pulse oscillator, and a coincidence circuit serving to generate the coincidence signal when the output digital signal of the counter means and a digital signal of the section range quantum number memorized in the memory circuit coincide with one another. A decoder designates the next stage address in order by output signals of the coincidence circuit. A calculation circuit is used for calculating a digital signal from the counter means and a coefficient digital signal from the designated address. A D-A convertor converts the output digital signal of the calculation circuit into a corresponding analog signal. The addresses in the memory circuit have memory portions which memorize as digital signals respective coefficients of n degree multiple term formulae for respective section ranges, and respective section range quantum numbers.
摘要翻译：提供一种用于电子乐器的音源设备。它包括具有多个地址的存储器电路，并且被布置成使得在将音乐波形的至少一个周期划分成p个单位并且每个区间范围中的波形由包含横坐标作为其变量的公式表示的情况下，每个公式的系数和截面范围量子数字以相应地址中的数字信号的形式存储。还包括时钟脉冲振荡器，用于计数时钟脉冲振荡器的输出时钟脉冲的计数器装置，以及用于当计数器装置的输出数字信号和截面范围量子的数字信号时产生一致信号的符合电路在存储器电路中存储的数字彼此一致。解码器通过符合电路的输出信号按顺序指定下一级地址。计算电路用于计算来自计数器装置的数字信号和来自指定地址的系数数字信号。 D-A转换器将计算电路的输出数字信号转换成相应的模拟信号。存储器电路中的地址具有存储部分，其存储作为数字信号的各个区间范围的n度多项式公式的相应系数以及相应的区间范围量子数。

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