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1. 发明授权

US4502361A Method and apparatus for dynamic reproduction of transient and steady state voices in an electronic musical instrument 失效
公开(公告)号：US4502361A
公开(公告)日：1985-03-05
申请号：US559585
申请日：1983-12-08
申请人： Jouko O. Viitanen , John T. Whitefield
发明人： Jouko O. Viitanen , John T. Whitefield
IPC分类号： G10H1/053 , G10H1/02 , G10H1/14 , G10H7/02 , G10H7/04 , G10H7/00
CPC分类号： G10H7/045 , G10H1/02
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.

2. 发明授权

US4357851A Method and apparatus for producing mixture tones in an electronic musical instrument 失效
标题翻译：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
申请人： Jerome Markowitz , Thomas M. Schenck
发明人： Jerome Markowitz , Thomas M. Schenck
IPC分类号： G10H1/06 , G10H7/04 , G10H1/08 , G10H1/18 , G10H7/00
CPC分类号： G10H1/06 , G10H7/045
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。

3. 发明授权

US4347403A Electrical waveform synthesizer 失效
标题翻译：电波形合成器
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
IPC分类号： G04F5/02 , G10H7/04 , G10L1/00
CPC分类号： G04F5/025 , G10H7/045
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。

4. 发明授权

US3823390A Musical tone wave shape generating apparatus 失效
公开(公告)号：US3823390A
公开(公告)日：1974-07-09
申请号：US32360973
申请日：1973-01-15
申请人： NIPPON MUSICAL INSTRUMENTS MFG
发明人： OKUMURA T , TAKEDA T , TOMISAWA N , UCHIYAMA Y
IPC分类号： G10H1/08 , G10H7/04 , G10H7/06 , G10H7/08 , G10H1/00 , G06F7/00 , G06F13/00
CPC分类号： G10H7/045 , G10H7/06
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

5. 发明申请

US20190034115A1 MUSICAL SOUND GENERATION DEVICE, MUSICAL SOUND GENERATION METHOD, STORAGE MEDIUM, AND ELECTRONIC MUSICAL INSTRUMENT 审中-公开
公开(公告)号：US20190034115A1
公开(公告)日：2019-01-31
申请号：US16046861
申请日：2018-07-26
申请人： CASIO COMPUTER CO., LTD.
发明人： Hiroki SATO , Hajime KAWASHIMA
IPC分类号： G06F3/06 , G10H7/00
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.

6. 发明授权

US08183452B2 Tone generation apparatus 有权
标题翻译：音调发生装置
公开(公告)号：US08183452B2
公开(公告)日：2012-05-22
申请号：US13052919
申请日：2011-03-21
申请人： Taro Shirahama
发明人： Taro Shirahama
IPC分类号： G10H1/00
CPC分类号： G10H7/045 , G10H7/00 , G10H2230/031 , G10H2250/541
摘要： Waveform data stored in an external memory are transferred from the external memory to an internal waveform memory and read out from the waveform memory to reproduce a tone. Transfer instruction is generated each time data readout from the waveform memory progresses by one page, and the transfer instruction is registered into a transfer queue. Thus, in response to the transfer instruction from the queue, the waveform data are read out on page by page from the external memory and stored into the waveform memory. The external memory also stores therein error correction code attached per page. As the waveform data are transferred from the external memory to the waveform memory, an error is detected using the error correction code, and if the error is correctable, the error is corrected. If the error is uncorrectable, volume of a tone being generated is rapidly attenuated, or a warning is issued.
摘要翻译：存储在外部存储器中的波形数据从外部存储器传送到内部波形存储器，并从波形存储器读出以再现音调。每当从波形存储器读出的数据进行一页时，产生传送指令，并将传送指令登记到传送队列中。因此，响应于来自队列的传送指令，波形数据从外部存储器逐页读出并存储到波形存储器中。外部存储器还存储每页附加的纠错码。当波形数据从外部存储器传送到波形存储器时，使用纠错码检测到错误，如果错误可纠正，则更正错误。如果错误是不可校正的，则产生的音调的音量被快速衰减，或发出警告。

7. 发明申请

US20120031256A1 TONE GENERATION APPARATUS 有权
标题翻译：音调发生装置
公开(公告)号：US20120031256A1
公开(公告)日：2012-02-09
申请号：US13196741
申请日：2011-08-02
申请人： Hiroyuki TSUCHIYA , Kazuyuki ITO , Masahiko HASEBE , Kouichi KASHIWAZAKI , Hiroyuki IWASE
发明人： Hiroyuki TSUCHIYA , Kazuyuki ITO , Masahiko HASEBE , Kouichi KASHIWAZAKI , Hiroyuki IWASE
IPC分类号： G10H7/00
CPC分类号： G10H1/053 , G10H1/187 , G10H1/22 , G10H7/045 , G10H2210/295 , G10H2230/041 , G10H2240/145 , G10H2240/311 , G10H2250/615
摘要： In response to detection of a note-on instruction, a CPU assigns a tone generating unit comprising two tone generating channels and sets tone color control data of the assigned tone generating unit into tone generator registers. The tone color control data includes a parameter common to the two channels. Once the CPU gives a tone generation start instruction to a tone generator, the tone generator accumulates a frequency number common to the two channels to thereby generate a progressive phase common to the two channels. Waveform readout section reads out left-channel and right-channel waveform data from a waveform memory on the basis of the phase and waveform selecting information of the left and right channels. Tone characteristics of the read-out left- and right-channel waveform data are controlled by a characteristic control section on the basis of a characteristic control parameter common to the two channels.
摘要翻译：响应于音符指示的检测，CPU分配包括两个乐音产生通道的乐音产生单元，并将所分配的乐音产生单元的音色控制数据设置成乐音发生器寄存器。色调控制数据包括两个通道共用的参数。一旦CPU向乐音发生器发出乐音产生开始指令，音调发生器就累积两个通道共同的频数，从而生成两个通道共同的渐进相位。波形读出部根据左右声道的相位和波形选择信息，从波形存储器读出左声道和右声道波形数据。读出的左声道和右声道波形数据的音调特性由特征控制部根据两声道共用的特征控制参数进行控制。

8. 发明授权

US06900381B2 Method for removing aliasing in wave table based synthesizers 有权
标题翻译：用于消除基于波表的合成器中的混叠的方法
公开(公告)号：US06900381B2
公开(公告)日：2005-05-31
申请号：US10145782
申请日：2002-05-16
申请人： Ulf Lindgren , Alberto Jimenez Feltström , Thomas Jacobsson
发明人： Ulf Lindgren , Alberto Jimenez Feltström , Thomas Jacobsson
IPC分类号： G10H7/02 , G10H7/04 , G10H7/00
CPC分类号： G10H7/045 , G10H2210/225 , G10H2230/015 , G10H2240/056 , G10H2240/251 , G10H2250/145 , G10H2250/281 , G10H2250/285 , G10H2250/291 , G10H2250/545 , G10H2250/631
摘要： A method and apparatus are provided for changing the pitch of a tabulated waveform in wavetable based synthesizers. Harmonics that normally would be aliased before a transposition process are removed by a discrete time low pass filter at the same time that the tabulated waveform is reconstruction and resampling.
摘要翻译：提供了一种用于改变基于波表的合成器中的列表波形的音调的方法和装置。在转置处理之前通常将被别名的谐波通过离散时间低通滤波器去除，同时制表波形是重建和重采样。

9. 发明授权

US4423655A Electronic transfer organ 失效
公开(公告)号：US4423655A
公开(公告)日：1984-01-03
申请号：US376105
申请日：1982-05-07
申请人： William D. Turner
发明人： William D. Turner
IPC分类号： G10H1/04 , G10H1/18 , G10H7/04 , G10H1/02
CPC分类号： G10H7/045 , G10H1/04 , G10H1/18
摘要： The present invention relates to economically fabricated means for the generation and processing, member selection, and acoustic radiation of pluralities of individual tone currents originating from at least one high frequency source and formed by note-information temporarily transferred through key depression, from permanent electronic memories to temporary memories in small numbers of standard tone units, in precise duplication of properties of pipe organ sound. There is described an electronic transfer organ for duplicating twenty-six known properties of pipe organ sound. The illustrative, inventive instrument employs completely standardized circuitry except for automatically programmable memories for each organ voice, which contain all the information required to form, switch and variously decouple all the notes in that voice. When keyboard keys are depressed, the information for corresponding notes is transferred to temporary memories in small numbers of tone units which then generate and switch the individual notes, without recourse to separate and permanent individual circuitry for each note. Dynamic keyers duplicate the keying effects of tracker action pipe organs. Sigmoid switches impart individualized tonal attack and decay patterns which preserve smooth keying at all speeds. All tone frequencies, derived ultimately from at least one high frequency source, are randomly independent in phase, and remain permanently in the various degrees of optimal mistune which characterize organ pipes in good tune. A four-channel sound system implements the effects of the tone frequency decouplings, and of a plurality of multiresonant filter sets, which together duplicate the collective sound of organ pipes distributed in various arrays within pipe enclosures. Construction is modular by keyboard and associated elements. Keyboard modules are subject to intercoupling by electronic or other means, and to augmentation by various devices in the prior art which effect expressive playing and moderate and musical fluctuations of tones, which are characteristic of organ pipe sound.

10. 发明授权

US5359145A Time-divisional data register 失效
标题翻译：时分数据寄存器
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
IPC分类号： G06F13/42 , G10H1/00 , G10H1/18 , G10H7/04 , H04J3/02 , H04J3/06
CPC分类号： G10H1/186 , G10H7/045
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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