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21. 发明授权

US4079650A ADSR envelope generator 失效
标题翻译： ADSR包络发生器
公开(公告)号：US4079650A
公开(公告)日：1978-03-21
申请号：US652217
申请日：1976-01-26
申请人： Ralph Deutsch , Leslie J. Deutsch
发明人： Ralph Deutsch , Leslie J. Deutsch
IPC分类号： G10H1/057 , G10H1/18 , G10H7/00 , G10H7/12
CPC分类号： G10H7/12 , G10H1/057
摘要： A single amplitude curve generator is time shared amongst a plurality of musical tone generators for controlling their musical shapes. The curve generator creates a wide variety of envelope characteristics by implementing a recursive computation algorithm for selected choices of a single curve shape parameter coupled with the use of a collection of timing clocks used to vary the time intervals associated with the attack, decay, and release regions of the musical tone envelope. Provision is made for forcing the release of a tone generator when a limited number of tone generators have been completely assigned in a keyboard musical instrument and a new note key switch is actuated. Note release signals can be ignored until the amplitude curve generator has completed the attack and decay regions for a given tone generator.
摘要翻译：单个幅度曲线发生器在用于控制其音乐形状的多个乐音发生器之间被共享。曲线发生器通过为选择的单个曲线形状参数的选择实现递归计算算法来产生各种各样的包络特征，结合使用用于改变与攻击，衰减和释放相关联的时间间隔的定时时钟的集合音乐信号的区域。当限制数量的音调发生器已经完全分配到键盘乐器中并且启动新的音符键开关时，提供强制释放音调发生器。注释释放信号可以被忽略，直到幅度曲线发生器完成给定音调发生器的攻击和衰减区域为止。

22. 发明授权

US4823667A Guitar controlled electronic musical instrument 失效
标题翻译：吉他控制电子乐器
公开(公告)号：US4823667A
公开(公告)日：1989-04-25
申请号：US64427
申请日：1987-06-22
申请人： Ralph Deutsch , Leslie J. Deutsch
发明人： Ralph Deutsch , Leslie J. Deutsch
IPC分类号： G10H1/00 , G10H3/12 , G10H3/18 , G10H7/10 , G10H7/00
CPC分类号： G10H1/0066 , G10H3/125 , G10H3/188 , G10H7/105 , G10H2210/066 , G10H2210/331 , G10H2250/135 , Y10S84/09
摘要： Apparatus is disclosed whereby an electronic musical tone generator is controlled in response to a musical instrument using mechanically vibrated strings. A bank of digital note filters is associated with each string to find the closest true musical note frequency corresponding to the vibration frequency of the string. The filters operate by computing the autocorrelation function of the string's vibration waveshape and then performing a Fourier transform to obtain the identification of the closest true musical note. An efficient and simple implementation is disclosed for an analog-to-digital signal conversion, the computation of the autocorrelation, and the Fourier transform. Provision is made for introducing frequency changes corresponding to a pitch bend in the vibration frequencies of the string.
摘要翻译：公开了一种装置，其中响应于使用机械振动的琴弦的乐器来控制电子乐音发生器。一组数字音符滤波器与每个字符串相关联，以找到与弦的振动频率相对应的最接近的真实音符频率。滤波器通过计算弦的振动波形的自相关函数并进行傅里叶变换以获得最接近的真实音符的识别来进行操作。公开了一种用于模数转换信号，自相关计算和傅里叶变换的有效简单的实现。规定引入与弦的振动频率中的音调弯曲相对应的频率变化。

23. 发明授权

US4620469A Key assignor for a touch responsive electronic musical instrument 失效
标题翻译：触摸式电子乐器的键分配器
公开(公告)号：US4620469A
公开(公告)日：1986-11-04
申请号：US677637
申请日：1984-12-03
申请人： Ralph Deutsch , Leslie J. Deutsch
发明人： Ralph Deutsch , Leslie J. Deutsch
IPC分类号： G10H1/053 , G10C3/12 , G10H1/18 , G10H1/34
CPC分类号： G10C3/12 , G10H1/34
摘要： A keyboard operated musical instrument is disclosed in which the speed of successively closing a first and second key contact on a keyboard switch is measured by means of a key detect and assignor system. A fast response time is obtained by scanning only the second set of key contacts which correspond to a previously detected closure of a first key contact. The measured closure speed can be used to control various musical effects such as the initial loudness in a touch responsive tone generation system. A method is also disclosed for measuring and utilizing the speed with which a keyswitch is released.
摘要翻译：公开了一种键盘操作的乐器，其中通过键检测和分配器系统来测量在键盘开关上连续关闭第一和第二键接触的速度。通过仅扫描与先前检测到的第一键接触的闭合相对应的第二组键触点来获得快速响应时间。测量的闭合速度可以用于控制各种音乐效果，例如在触摸响应音产生系统中的初始响度。还公开了一种用于测量和利用释放钥匙开关的速度的方法。

24. 发明授权

US4570520A Tone generator assignment in a keyboard electronic musical instrument 失效
标题翻译：键盘电子乐器中的音调发生器分配
公开(公告)号：US4570520A
公开(公告)日：1986-02-18
申请号：US591353
申请日：1984-03-19
申请人： Ralph Deutsch , Leslie J. Deutsch
发明人： Ralph Deutsch , Leslie J. Deutsch
IPC分类号： G10H1/18 , G10H1/22 , G10H7/00
CPC分类号： G10H1/181 , Y10S84/02
摘要： A keyboard operated electronic musical instrument is disclosed wherein the number of tone generators is less than the number of keyswitches in a keyboard array of keyswitches. If all the available tone generators have been assigned to actuated keyswitches, the actuation of an additional keyswitch causes the oldest tone generator to be assigned to the newest keyswitch. The assignment action does not depend upon the release of any keyswitch. A phase addition means is used to remove the oldest tone generator so that release key clicks are not generated.
摘要翻译：公开了一种键盘操作的电子乐器，其中乐音发生器的数量小于按键开关的键盘阵列中的按键开关的数量。如果所有可用的音调发生器都被分配到致动的钥匙开关，则附加钥匙开关的致动使得最旧的音调发生器被分配给最新的钥匙开关。分配动作不依赖于任何钥匙开关的释放。相位增加装置用于去除最旧的音调发生器，使得不产生释放键点击。

25. 发明授权

US4368658A Apparatus for solo harmony transfer in an electronic musical instrument 失效
标题翻译：用于电子乐器中独奏和谐转移的装置
公开(公告)号：US4368658A
公开(公告)日：1983-01-18
申请号：US237009
申请日：1981-02-24
申请人： Ralph Deutsch , Leslie J. Deutsch
发明人： Ralph Deutsch , Leslie J. Deutsch
IPC分类号： G10H1/18 , G10H1/20 , G10H1/38 , G10F1/00
CPC分类号： G10H1/383 , G10H2210/175 , G10H2210/596 , G10H2210/601 , G10H2210/621 , Y10S84/22
摘要： In an electronic musical instrument having a first and second array of keyboard switches apparatus is provided for providing fill-in notes sounded by tone generators assigned to the first keyboard. The fill-in notes are selected by selecting one of a library of stored chord types which is closest to the notes played on the second keyboard combined with the highest frequency note played on the first keyboard. The closest decision is made by processing the keyed switch data with two sets of matched filters. The chord type decision is made to correspond to a matched filter combination which produces a maximum output response. A root note is also chosen for the selected chord type. The selected chord type and chosen root note are used to provide the fill-in notes.
摘要翻译：在具有第一和第二阵列的键盘开关装置的电子乐器中，提供用于提供由分配给第一键盘的音调发生器发出的填充音符。通过选择最接近第二个键盘上播放的音符的组合存储的和弦类型中的一个与在第一个键盘上播放的最高频率音符相结合来选择填充音符。通过使用两组匹配滤波器处理带键开关数据来做出最接近的决定。和弦类型决定使得对应于产生最大输出响应的匹配滤波器组合。还为所选和弦类型选择根音。所选择的和弦类型和选择的根音用于提供填写笔记。

26. 发明授权

US4327419A Digital noise generator for electronic musical instruments 失效
标题翻译：电子乐器数字噪声发生器
公开(公告)号：US4327419A
公开(公告)日：1982-04-27
申请号：US123632
申请日：1980-02-22
申请人： Ralph Deutsch , Leslie J. Deutsch
发明人： Ralph Deutsch , Leslie J. Deutsch
IPC分类号： G10H7/08 , G06F1/03 , G10H1/42 , G10H7/00 , G06F15/31 , G10H1/00
CPC分类号： G06F1/03 , G10H1/42 , G10H7/00 , G06F2101/14 , G10H2250/301
摘要： In an electronic musical instrument apparatus is provided for generating a noise-like signal suitable as source for a variety of musical effects such as the imitation of percussive musical instruments. Noise-like signals of predetermined spectral shape are produced by adding values from a sinusoid table by means of an address control which is incremented randomly according to a decision rule. The decision rule is implemented by a comparison of stored constant values with random values generated by a white noise source. The generated noise-like signals are advantageously employed in digital electronic musical instruments.
摘要翻译：在一种电子乐器装置中，用于产生适合作为各种音乐效果的来源的类似噪声的信号，例如模仿敲击乐器。通过根据判定规则随机增加的地址控制从正弦曲线表中增加值来产生预定频谱形状的类噪声信号。决策规则通过将存储的常数值与由白噪声源产生的随机值进行比较来实现。所产生的类似噪声的信号有利地用于数字电子乐器。

27. 发明授权

US4249448A Even-odd symmetric computation in a polyphonic tone synthesizer 失效
标题翻译：复音色调合成器中的偶数对称运算
公开(公告)号：US4249448A
公开(公告)日：1981-02-10
申请号：US28038
申请日：1979-04-09
申请人： Ralph Deutsch , Leslie J. Deutsch
发明人： Ralph Deutsch , Leslie J. Deutsch
IPC分类号： G10H7/08 , G10H7/10 , G10H1/08
CPC分类号： G10H7/105
摘要： In a musical instrument having one or more tone generators in which a plurality of data words corresponding to the amplitudes of a corresponding number of evenly spaced reference points defining the waveform of one cycle of an audio signal are transferred sequentially from a note register to a digital-to-analog converter in repetitive cycles at a rate proportional to the pitch of the tone being generated, apparatus is provided for computing the set of data points in the note register from a set of points defining a quarter cycle of the waveform. The calculation of the quarter cycle of data points is divided into two sets. One set is calculated using the odd-numbered harmonics and the other set is caculated using the even-numbered harmonics. The complete waveform is reconstructed from the two sets during the transfer of data to the note registers. By reducing the number of calculated points to one-quarter of a waveform the calculation time is reduced thereby making the instrument capable of faster response to time varying tonal changes.
摘要翻译：在具有一个或多个音调发生器的乐器中，其中对应于定义音频信号的一个周期的波形的相应数量的均匀间隔的参考点的幅度的多个数据字从音符寄存器顺序传送到数字模拟转换器以与生成的音调的音调成比例的速率在重复周期中提供装置，用于从限定波形的四分之一周期的一组点计算音符寄存器中的数据点集合。数据点的四分之一周期的计算分为两组。使用奇数次谐波计算一组，另一组使用偶数谐波计算。在将数据传输到音符寄存器期间，从两组中重构完整的波形。通过将计算出的点数减少到波形的四分之一，计算时间减少，从而使仪器能够更快地响应时变音调变化。

28. 发明授权

US4085644A Polyphonic tone synthesizer 失效
标题翻译：复音色调合成器
公开(公告)号：US4085644A
公开(公告)日：1978-04-25
申请号：US603776
申请日：1975-08-11
申请人： Ralph Deutsch , Leslie J. Deutsch
发明人： Ralph Deutsch , Leslie J. Deutsch
IPC分类号： G10H7/08 , G10H7/10 , G10H1/00 , G10F1/00
CPC分类号： G10H7/105
摘要： Musical notes are produced polyphonically in a tone synthesizer or like musical instrument by computing a master data set, transferring data set to buffer memories, and repetitively converting in real time contents of memories to notes. The master data set is created repetitively and independently of tone generation by computing a generalized Fourier algorithm using stored sets of generalized Fourier coefficients. Computations limit tones to audible frequencies, occur at intervals short compared to musical tone periods, and circuitry is included to provide time-varying modulations of the synthesized tonal structure. Synchronizing signals included in the buffer memories provide smooth transition between the master system logic clock and asynchronous tone conversion clocks. A time shared digital-to-analog converter transforms the buffer memory outputs to individual tone channels and provides attack, decay, sustain, release and other amplitude modulation effects.
摘要翻译：通过计算主数据集，将数据集传送到缓冲存储器，并将存储器的实时内容重复地转换为音符，在音调合成器或类似乐器中多音制作音符。通过使用存储的广义傅立叶系数集计算广义傅里叶算法，重复地和独立于乐音产生来创建主数据集。计算将音调限制到可听频率，与音乐时段相比间隔短，并且包括电路以提供合成音调结构的时变调制。包括在缓冲存储器中的同步信号提供主系统逻辑时钟和异步音调转换时钟之间的平滑过渡。时间共享的数模转换器将缓冲存储器输出转换为各个音频通道，并提供攻击，衰减，维持，释放和其他幅度调制效果。

29. 发明授权

US4022098A Keyboard switch detect and assignor 失效
标题翻译：键盘开关检测和转换器
公开(公告)号：US4022098A
公开(公告)日：1977-05-10
申请号：US619615
申请日：1975-10-06
申请人： Ralph Deutsch , Leslie J. Deutsch
发明人： Ralph Deutsch , Leslie J. Deutsch
IPC分类号： G10H1/18 , G10F1/00
CPC分类号： G10H1/185
摘要： Keyboard switches are arranged in groups of P switches, Q groups per set, and S sets per keying system. During a search cycle, each group of P switches is sequentially examined to detect a change in a switch state of any member since the preceding search cycle. A change in switch state causes system to enter an assign mode cycle during which a data word is created in memory corresponding to a newly detected switch closure, or is removed from memory corresponding to a newly detected switch opening. Provision is incorporated for coupling between switch groups and switch sets. After an assignment has been completed, system returns to a search cycle. The system is particularly useful in a keyboard musical instrument.
摘要翻译：键盘开关按P开关组，每组Q组和每个键控系统的S组排列。在搜索周期期间，依次检查每组P个开关以检测自上一个搜索周期以来任何成员的开关状态的变化。切换状态的改变使得系统进入分配模式循环，在该分配模式循环期间，在与新检测的开关闭合相对应的存储器中创建数据字，或者从对应于新检测到的开关开口的存储器中移除数据字。配置了开关组和开关组之间的耦合。分配完成后，系统返回搜索周期。该系统在键盘乐器中特别有用。

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