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公开(公告)号：US4502361A
公开(公告)日：1985-03-05
申请号：US559585
申请日：1983-12-08
摘要： A method and apparatus for reproducing the complete attack transient and steady state portions of a waveform is disclosed. In an electronic musical instrument providing a means for detecting the depression and release of a key switch, a means for storing a complete attack transient of the waveform and a predetermined number of full cycles of the steady state of the waveform, a means for generating addresses for selectively causing the reading from the storage means the complete attack transient of the waveform and the predetermined number of full cycles of the steady state of the waveform and for generating addresses for selectively causing the repeated reading from the storage means, either randomly or in a predetermined pattern, a number of cycles of the steady state of the waveform until release of the depressed key switch, and means for generating addresses for selectively causing the continued repeated reading from a storage means, either randomly or in a predetermined pattern, a number of cycles of the steady state of the waveform during the decay transient of the waveform until audio ceases. The waveform contains envelope characteristics and is of an harmonically and non-harmonically varying content changing with time. Upon the detection of the completion of the reading of the complete waveform the continued depression of the key switch a number of cycles of the steady state of the waveform are continued to be read from the storage means, either randomly or in a predetermined pattern, until release of the depressed key switch. The repeated reading of the number of cycles is a recirculation of the steady state portion of the waveform and is controlled by a switch means which limits the generated address to a predetermined address or the randomly generated addresses to a predetermined range. The amount of recirculation of the steady state portion of the waveform may also be controlled by incorporating the voice memory data of the first address location of the first cycle of the attack transient portion of the waveform a digital coding limiting the randomly generated addresses to a predetermined range.
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2.发明授权Method and apparatus for producing mixture tones in an electronic musical instrument 失效用于在电子乐器中产生混合色调的方法和装置
公开(公告)号：US4357851A
公开(公告)日：1982-11-09
申请号：US242754
申请日：1981-03-11
摘要： A digital electronic organ mixture system comprises a pair of digital organs operatively connected in parallel to the same keyboard or keyboards. The keys are grouped into regions of adjacent keys. In one of the parallel organ systems, the frequency numbers ascend along the keyboard corresponding to the notes associated with the keys. In the other parallel organ system, the frequency numbers are weighted by preselected factors, the factor being the same for each keyboard region, and the factor for each successive region along the keyboard being lower than the factor for the immediately preceding region. Activation of a key along the keyboard produces a pitch series comprising a note produced by the unweighted frequency numbers in one organ system and a second note produced by the weighted frequency numbers in the other organ system. The pitch series breaks back at each successive keyboard region in accordance with the weighting factor for that region. One or more additional complex wave forms may be stored in the organ system having weighted frequency numbers, to produce other tones in the pitch series.
摘要翻译： 一种数字电子器官混合系统包括一对可操作地连接到相同键盘或键盘的数字器官。 键被分组到相邻键的区域中。 在一个并行器官系统中，频率数字沿着与键相关的笔记对应的键盘上升。 在另一个并行机构系统中，频率数由预选因子加权，每个键盘区域的因子相同，键盘上每个连续区域的因子低于紧邻前一个区域的因子。 沿着键盘激活键产生包括由一个器官系统中的未加权频率编号产生的音符的音调系列和由另一个器官系统中的加权频率编号产生的第二音符。 音调系列根据该区域的加权系数在每个连续键盘区域中断。 可以在具有加权频数的器官系统中存储一个或多个另外的复波形，以产生音调序列中的其他音调。
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公开(公告)号：US4347403A
公开(公告)日：1982-08-31
申请号：US143257
申请日：1980-04-24
申请人： Joseph E. Schwager , Harry E. Urban
发明人： Joseph E. Schwager , Harry E. Urban
摘要： This electrical waveform synthesizer uses a digital feedback loop circuit which includes selectable inputs for multiplex or recirculation operation, and a shift register whose shift rate is controlled by an adjustable precision clock so as to accurately adjust the frequency of the output waveform. The adjustable clock features a precision oscillator whose pulse rate is divided by a selectable-logic rate-divider circuit.
摘要翻译： 该电波形合成器使用数字反馈环路电路，其包括用于多路复用或再循环操作的可选输入，以及移位寄存器，其移位速率由可调精度时钟控制，以便精确地调整输出波形的频率。 可调时钟具有精密振荡器，脉冲频率由可选逻辑分频电路分压。
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公开(公告)号：US3823390A
公开(公告)日：1974-07-09
申请号：US32360973
申请日：1973-01-15
发明人： OKUMURA T , TAKEDA T , TOMISAWA N , UCHIYAMA Y
摘要： D R A W I N G
A first memory digitally stores the levels of the spectra of the fundamental wave and each harmonic up to the mth harmonic of intended tone color waves, a second memory digitally stores values XO through XN of a sinusoidal wave function at the respective points in its one cycle sampled by a sampling number N, and a third memory is for writing incoming information to be thereafter read out. Digital signals (a, b, . . . z) each representing amplitude of the respective tone color are sequentially and repetitiously produced. The levels of the spectra (fundamentals: a1b1, . . . z1; second harmonics: a2, b2 . . . z2; . . . ; mth harmonics: am, bm, . . . zm) for the respective tone color waves are sequentially read from the first memory. The amplitude signals and the level signals are respectively multiplied with each other tone color by tone color, and thereafter are added cumulatively for each of the fundamental waves and the harmonics to produce each cumulative value Hp (a X ap) + (b X bp) + . . . + (z X zp); where p . . . ,m. On the other hand, values of the sinusoidal function at the respective address points PQ mod N, where Q 1, . . . N, are read from the second memory and these read out outputs are multiplied by the respective value Hp. The products of the multiplication are added cumulatively for values H1 through Hm to obtain a signal-
公开(公告)号：US5359145A
公开(公告)日：1994-10-25
申请号：US64747
申请日：1993-05-18
申请人： Kazuhisa Okamura
发明人： Kazuhisa Okamura
摘要： A time-divisional data register comprises a shift register and a latch and is used for transferring data from a first apparatus operating at a relatively high speed to a second apparatus performing a time-divisional processing at a relatively low speed or long first period. The shift register operating at a second period shorter than the first period fetches data transmitted from the first apparatus with a designated time-divisional channel to which the data is to be assigned, stores the fetched data at a storage position corresponding to the designated channel and then outputs repetitively the stored data for each channel in turn at the second period. The latch latches the outputs from the shift register and outputs the latched data in synchronism with tile processing period of each channel in the second apparatus.
摘要翻译： 时分数据寄存器包括移位寄存器和锁存器，并且用于将数据从以较高速度操作的第一装置传送到在较低速或长的第一周期执行时分处理的第二装置。 移位寄存器在比第一期间短的第二期间工作，以指定的分时信道取得从第一装置发送的数据，将取出的数据存储在与指定信道对应的存储位置， 然后在第二个周期依次重复输出每个频道的存储数据。 锁存器锁存来自移位寄存器的输出，并与第二装置中每个通道的瓦片处理周期同步地输出锁存数据。
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6.发明授权Tone signal generator utilizing ancillary memories for electronic musical instrument 失效音频信号发生器利用电子乐器的辅助存储器
公开(公告)号：US5321198A
公开(公告)日：1994-06-14
申请号：US938435
申请日：1992-08-31
申请人： Hideo Suzuki , Yoshio Fujita
发明人： Hideo Suzuki , Yoshio Fujita
CPC分类号： G10H7/045
摘要： A tone signal generator utilizing ancillary memories for an electronic musical instrument system has a source memory storing a long and continuous waveform data and two ancillary memories each capacity of which is smaller than that of the source memory. A portion of the continuous waveform data from the source memory is written into one of the ancillary memories. After completion of the writing operation, the written waveform data is read out for tone production, and simultaneously another portion of the continuous waveform data is written into the other of said ancillary memories. The repetition of such operation make it possible to reproduce a long and continuous tone waveform in spite of the small capacity of the ancillary memories.
摘要翻译： 利用电子乐器系统的辅助存储器的音频信号发生器具有存储长而连续的波形数据的源存储器和每个容量小于源存储器的两个辅助存储器。 来自源存储器的连续波形数据的一部分被写入辅助存储器之一。 在写入操作完成之后，读出写入的波形数据用于音调产生，同时将另一部分连续波形数据写入所述辅助存储器中的另一个。 这种操作的重复使得可以再现长而连续的音调波形，尽管辅助存储器容量小。
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7.发明授权Electronic musical instrument having filter-and-delay loop for tone production 失效电子乐器具有用于音调制作的滤波器和延迟回路
公开(公告)号：US4130043A
公开(公告)日：1978-12-19
申请号：US732181
申请日：1976-10-13
申请人： Koji Niimi
发明人： Koji Niimi
摘要： An electronic musical instrument comprises a waveshape memory delivering out digital value samples of one cycle of a certain waveshape, and a loop circuit including a filter and a shift register. The digital waveshape values read out from the waveshape memory is caused to circulate at a predetermined rate of time in the loop circuit. A waveshape taken out from the loop circuit varies as time lapses, and is utilized as a musical tone.
摘要翻译： 一种电子乐器包括一个波形存储器，其输出一定波形的一个周期的数字值样本，以及包括滤波器和移位寄存器的环路电路。 使从波形存储器读出的数字波形值以循环电路中的预定速度循环。 从环路电路中取出的波形随着时间的推移而变化，并被用作音调。
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公开(公告)号：US4128032A
公开(公告)日：1978-12-05
申请号：US627473
申请日：1975-10-30
摘要： An electronic musical instrument has a plurality of tone selectors which select musical tones; a waveshape calculator which calculates a waveshape represented by amplitudes at two or more than two sampled points of one period of the selected tone and which is operative whenever the tone selectors are actuated; a plurality of waveshape memories which temporarily memorize the calculated waveshapes; clock signal generator which generates clock signals with high frequencies corresponding to pitches of depressed keyswitches of the musical instrument and which is operative whenever the keyswitches are depressed; a reading circuit which repetitively and successively reads out the memorized waveshape amplitudes by the clock signal generated by the clock signal generator; and a converter which converts the waveshape amplitudes read out by the reading circuit to a musical tone, wherein a musical tone is generated by repetitively reading out the temporarily memorized musical waveshape.
摘要翻译： 电子乐器具有选择乐音的多个音调选择器; 波形计算器，其计算由所选音调的一个周期的两个或两个以上采样点处的振幅所表示的波形，并且每当音调选择器被致动时，该波形计算器可操作; 多个暂时存储计算出的波形的波形存储器; 时钟信号发生器，其产生具有对应于乐器的按下的按键开关的间距的高频的时钟信号，并且每当钥匙开关被按下时，它都是可操作的; 读出电路，其通过由时钟信号发生器产生的时钟信号重复并依次读出存储的波形幅度; 以及转换器，其将由读取电路读出的波形幅度转换为乐音，其中通过重复读出临时存储的音乐波形来生成乐音。
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公开(公告)号：US4067254A
公开(公告)日：1978-01-10
申请号：US634533
申请日：1975-11-24
CPC分类号： G10H7/045
摘要： In a musical polyphonic tone synthesizer, musical waveshapes are produced by voltage controlled oscillators. The analog frequency control voltages are created by converting stored digital numbers to analog voltages. The selection of these digital numbers and their assignment to a plurality of voltage controlled oscillators is controlled by detecting switches actuated on a keyboard. Provision is made for operating the oscillators over the full frequency range of an electronic musical instrument's keyboard. Automatic tuning means is incorporated to adjust the conversion reference voltage for each oscillator to keep the musical instrument in tune by locking the set of voltage controlled oscillators to a stable reference oscillator. Tuning the reference oscillator thereby tunes the set of voltage controlled oscillators while retaining equal tempered musical frequencies.
摘要翻译： 在音乐和弦音合成器中，由电压控制的振荡器产生音乐波形。 通过将存储的数字数字转换为模拟电压来产生模拟频率控制电压。 通过检测在键盘上致动的开关来控制这些数字数字的选择及其对多个压控振荡器的分配。 提供了在电子乐器的键盘的全频率范围内操作振荡器。 结合了自动调谐装置来调整每个振荡器的转换参考电压，以通过将一组压控振荡器锁定到稳定的参考振荡器来保持乐器的调和。 调谐参考振荡器，从而调整该组压控振荡器，同时保持相同的回火音乐频率。
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10.发明申请公开(公告)号：US20190034115A1
公开(公告)日：2019-01-31
申请号：US16046861
申请日：2018-07-26
发明人： Hiroki SATO , Hajime KAWASHIMA
CPC分类号： G06F3/0647 , G06F3/0604 , G06F3/0611 , G06F3/0631 , G06F3/0656 , G06F3/0673 , G10H1/24 , G10H7/002 , G10H7/045 , G10H2230/031 , G10H2240/005 , G10H2240/161
摘要： When transferring waveform data from a waveform region in a high-capacity flash memory to a waveform buffer in a RAM, first, whether a non-ring buffer region that can receive the waveform data can be allocated in the RAM is determined, and if so, the waveform data is transferred to the allocated non-ring buffer region. If such a non-ring buffer region cannot be allocated, then whether a ring buffer region that can receive the waveform data can be allocated in the RAM is determined, and if so, the waveform data is transferred to the ring-buffer region in a ring buffer operational manner.
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