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21. 发明授权

US4201105A Real time digital sound synthesizer 失效
标题翻译：实时数字声音合成器
公开(公告)号：US4201105A
公开(公告)日：1980-05-06
申请号：US901489
申请日：1978-05-01
申请人： Harold G. Alles
发明人： Harold G. Alles
IPC分类号： G10H7/00 , G10H5/10 , G10H5/02
CPC分类号： G10H7/002
摘要： Linearly binary-coded digital control signals representing specific time segments of musical sounds are used in part to control stepped ramp signal generators in a digital synthesizer which runs continuously on a fixed program. The ramp signals are used to control amplitude and frequency parameters of multiple digital oscillators that produce respective constituent tones of the musical sound segments. The synthesizer is operable in response to time-multiplexed digital control signals for multiple musical voices, one voice portion of which is also being computed in real time for multiplexing with previously computed and stored digital control signals for other voices. The indicated computations are effected by known techniques on a commercially available computer to translate performer-actuated transducer output signals, designating notes of a composition, into the aforementioned binary-coded digital control signals.
摘要翻译：表示音乐声音的特定时间段的线性二进制编码的数字控制信号部分地用于控制在固定程序上连续运行的数字合成器中的阶梯式斜坡信号发生器。斜坡信号用于控制产生音乐声段的各个组成音调的多个数字振荡器的幅度和频率参数。合成器可响应于用于多个音乐语音的时分多路复用数字控制信号而操作，其一个语音部分也正在实时计算，以便与先前计算和存储的数字控制信号进行多路复用以用于其他语音。所指示的计算由商业计算机上的已知技术实现，以将执行者致动的换能器输出信号（组合的注释）转换成上述二进制编码的数字控制信号。

22. 发明授权

US4119005A System for generating tone source waveshapes 失效
标题翻译：用于产生音源波形的系统
公开(公告)号：US4119005A
公开(公告)日：1978-10-10
申请号：US784317
申请日：1977-04-04
申请人： Michio Kondo , Akira Nakada , Masanobu Chibana , Tsuyoshi Futamase , Akiyoshi Ohya
发明人： Michio Kondo , Akira Nakada , Masanobu Chibana , Tsuyoshi Futamase , Akiyoshi Ohya
IPC分类号： G10H1/057 , G10H7/06 , G10H1/02 , G10H5/10
CPC分类号： G10H1/0575 , G10H7/06
摘要： The system comprises a frequency number memory device for storing information regarding the frequencies of respective tones, a keyboard switch for reading out frequency number information corresponding thereto from the memory device, an address generator including an adder for adding a predetermined number of the frequency number information thereby producing an address signal consisting of plural bits, address composers for processing the bits of the address signal and thereby composing digital tone signals constituting a saw-tooth, square and triangular waveshape, and digital-analog converters for converting the digital tone signals into analog tone signals, which are thereafter used to synthesize waveshapes of any tone.
摘要翻译：该系统包括用于存储关于各个音调的频率的信息的频数存储装置，用于从存储装置读出与其对应的频数信息的键盘开关，地址发生器，包括用于将预定数量的频数信息从而产生由多个位组成的地址信号，用于处理地址信号的位的地址编辑器，从而构成构成锯齿，正方形和三角形波形的数字乐音信号，以及数字模拟转换器，用于将数字乐音信号转换成模拟音调信号，其后用于合成任何音调的波形。

23. 发明授权

US4056996A Electronic music system 失效
公开(公告)号：US4056996A
公开(公告)日：1977-11-08
申请号：US589559
申请日：1975-06-23
申请人： David A. Bunger
发明人： David A. Bunger
IPC分类号： G10H1/043 , G10H1/057 , G10H1/02 , G10H5/10
CPC分类号： G10H1/043 , G10H1/057 , G10H2210/211 , G10H2250/475 , Y10S84/02 , Y10S84/09 , Y10S84/20
摘要： A monophonic system includes means for voicing only tones derived in response to depression of a key associated with the highest pitched note when several keys are struck at approximately the same time, regardless of the order in which the keys are struck. If several keys are released at approximately the same time, only the tones derived in response to the highest remaining activated key are voiced, regardless of the release sequence. In response to the system being played legatissimo, voiced tones gradually shift in frequency, i.e., portamento is achieved. In response to the system being played staccatissimo, voiced tones shift in frequency in discrete steps. For unusual or special effect tone simulation, square wave tone signals derived from a frequency divider chain responsive to a voltage controlled oscillator, controlled primarily by the nomenclature of the highest pitch struck key, may be converted into a sawtooth waveform, a pulse waveform having a pulse width controlled by the highest pitch struck key, or can be left unaltered. Clicks and noise can be derived in response to key activations. The sawtooth, pulse, square wave, clicks and noise are fed through a filter selectively having band pass, low pass and high pass transfer characteristics that can be controlled with regard to resonant frequency and selectivity (Q) to provide additional unusual effects. A first group of tone signals derived from the frequency divider is processed to simulate flutes while a second group is processed to simulate brasses. In flute simulation, filtering of harmonics and passage to an output of the fundamental of the tone associated with the highest pitch struck key is assured by including in cascade a low pass filter and an amplifier having a variable gain characteristic directly related to the nomenclature of the highest pitch struck key. In brass simulation, an attack envelope having plural slopes is provided. Brass brightness is controlled by providing a variable wave shaper that responds to pedal control or is a transient function during the attack of the voice. Flatting during the attack of a brass tone is simulated by transiently reducing the voltage controlled oscillator frequency when a new highest pitch key is struck by an amount indicative of the nomenclature of the struck key. Attack rates of the flutes and unusual tones can be controlled to a plurality of values; if the system is in a percussive mode the attack rate is relatively fast. Roll-off rate of certain flute tones is fixed, while other flute tones and the unusual tones can be provided with a fixed roll-off or sustain effect. The voltage controlled oscillator frequency is modulated by a vibrato oscillator frequency, the frequency of which can be fixed or controlled in a random manner in response to a noise source to simulate brass vibrato effects.

24. 发明授权

US4056033A Tone generator system for an electronic organ 失效
标题翻译：电子琴发声系统
公开(公告)号：US4056033A
公开(公告)日：1977-11-01
申请号：US622383
申请日：1975-10-14
申请人： Michihiro Inoue , Takeji Kimura , Masaharu Sato , Masahiko Tsunoo
发明人： Michihiro Inoue , Takeji Kimura , Masaharu Sato , Masahiko Tsunoo
IPC分类号： G10H1/08 , G10H5/10 , G10H1/02
CPC分类号： G10H5/10 , G10H1/08
摘要： A tone generator system for an electronic organ which is capable of being fabricated into an LSI structure and receives a saw-tooth wave or staircase wave as an input thereto comprises a frequency divider for the saw-tooth wave or staircase wave including a ladder resistor network and a complementary MOS FET devices, an analog switch having a wide dynamic range and a high linearity in input-output transfer characteristic constructed by MOS FET devices to serve as an indirect keying means, a sustain means including a novel structure of a variable impedance element which is constructed to control a channel current in a MOS FET device by varying the potential distribution in the source region, and an impedance coverter constructed by complementary MOS FET devices and free from a D.C. level shift. With the above arrangement a tone generator system of high quality for an electronic organ is provided.
摘要翻译：一种能够制造成LSI结构并接收锯齿波或阶梯波作为输入的电子琴的音调发生器系统包括用于锯齿波的分频器或包括梯形电阻网络的阶梯波以及互补MOS FET器件，具有由MOS FET器件构成的用作间接键控装置的输入输出传输特性中的宽动态范围和高线性度的模拟开关，包括可变阻抗元件的新颖结构的维持装置其被构造为通过改变源区域中的电位分布来控制MOS FET器件中的沟道电流，以及由互补MOS FET器件构成并且没有DC电平偏移的阻抗覆盖器。通过上述配置，提供了一种用于电子机器的高品质音调发生器系统。

25. 发明授权

US3801721A Monophonic electronic music system with apparatus for special effect tone simulation 失效
标题翻译：具有特殊效果音模拟的单声道电子音乐系统
公开(公告)号：US3801721A
公开(公告)日：1974-04-02
申请号：US3801721D
申请日：1972-06-16
申请人： BALDWIN CO D H
发明人： BUNGER D
IPC分类号： G10H1/043 , G10H1/053 , G10H1/06 , G10H1/22 , G10H5/00 , G10H5/04 , G10H1/02 , G10H5/10
CPC分类号： G10H1/06 , G10H5/002 , G10H5/04 , G10H2250/475 , Y10S84/02 , Y10S84/20
摘要： A monophonic system includes means for voicing only tones derived in response to depression of a key associated with the highest pitched note when several keys are struck at approximately the same time, regardless of the order in which the keys are struck. If several keys are released at approximately the same time, only the tones derived in response to the highest remaining activated key are voiced, regardless of the release sequence. In response to the system being played legatissimo, voiced tones gradually shift in frequency, i.e., portamento is achieved. In response to the system being played staccatissimo, voiced tones shift in frequency in discrete steps. For unusual or special effect tone simulation, square wave tone signals derived from a frequency divider chain responsive to a voltage controlled oscillator, controlled primarily by the nomenclature of the highest pitch struck key, may be converted into a sawtooth waveform, a pulse waveform having a pulse width controlled by the highest pitch struck key, or can be left unaltered. Clicks and noise can be derived in response to key activations. The sawtooth, pulse, square wave, clicks and noise are fed through a filter selectively having band pass, low pass and high pass transfer characteristics that can be controlled with regard to resonant frequency and selectivity (Q) to provide additional unusual effects. A first group of tone signals derived from the frequency divider is processed to simulate flutes while a second group is processed to simulate brasses. In flute simulation, filtering of harmonics and passage to an output of the fundamental of the tone associated with the highest pitch struck key is assured by including in cascade a low pass filter and an amplifier having a variable gain characteristic directly related to the nomenclature of the highest pitch struck key. In brass simulation, an attack envelope having plural slopes is provided. Brass brightness is controlled by providing a variable wave shaper that responds to pedal control or is a transient function during the attack of the voice. Flatting during the attack of a brass tone is simulated by transiently reducing the voltage controlled oscillator frequency when a new highest pitch key is struck by an amount indicative of the nomenclature of the struck key. Attack rates of the flutes and unusual tones can be controlled to a plurality of values; if the system is in a percussive mode the attack rate is relatively fast. Roll-off rate of certain flute tones is fixed, while other flute tones and the unusual tones can be provided with a fixed roll-off or sustain effect. The voltage controlled oscillator frequency is modulated by a vibrato through frequency is modulated by a oscillator, the frequency of which can be fixed or controlled in a random manner in response to a noise source to simulate brass vibrato effects.

26. 发明授权

US3617598A Sawtooth tone generating and keying circuit for an electronic musical instrument 失效
标题翻译：用于电子音乐仪器的SAWTOOTH音调生成和键控电路
公开(公告)号：US3617598A
公开(公告)日：1971-11-02
申请号：US3617598D
申请日：1970-02-25
申请人： HERCULES INC
发明人： WOODY ROBERT F JR
IPC分类号： G10H1/16 , G10H5/10
CPC分类号： G10H1/16
摘要： A circuit is provided for generating an output signal having the characteristics of a natural musical tone by converting a square wave input signal into a sawtooth wave output signal. The circuit includes a unidirectional current device and a biasing circuit providing a gradually changing bias voltage to the unidirectional current device. The circuit thereby produces a sawtooth wave output signal of gradually increasing and diminishing magnitude. Circuit arrangements are also provided for combining the musical tones produced by a plurality of such circuits.

27. 发明授权

US2408589A Apparatus for producing electrical oscillations 失效
标题翻译：用于产生电气振荡的装置
公开(公告)号：US2408589A
公开(公告)日：1946-10-01
申请号：US44280442
申请日：1942-05-13
申请人： JEWEL W WELLS
发明人： WELLS ALVIN W
IPC分类号： G10H5/10
CPC分类号： G10H5/10 , Y10S84/13

28. 发明授权

US2365568A Signaling system 失效
公开(公告)号：US2365568A
公开(公告)日：1944-12-19
申请号：US45158142
申请日：1942-07-20
申请人： CENTRAL COMMERICAL COMPANY
发明人： NICHOLAS LANGER
IPC分类号： G10H5/10
CPC分类号： G10H5/10 , Y10S84/13

29. 发明授权

US2039651A Electrical musical instrument 失效
公开(公告)号：US2039651A
公开(公告)日：1936-05-05
申请号：US920635
申请日：1935-03-04
申请人： JOHN HALMAGYI
发明人： NICHOLAS LANGER
IPC分类号： G10H5/10
CPC分类号： G10H5/10 , Y10S84/13

30. 发明授权

US1986599A Frequency stabilizing means 失效
标题翻译：频率稳定装置
公开(公告)号：US1986599A
公开(公告)日：1935-01-01
申请号：US70085533
申请日：1933-12-04
申请人： PRATT READ & COMPANY
发明人： O'LEARY FRANCIS R
IPC分类号： G10H5/10
CPC分类号： G10H5/10

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