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公开(公告)号：US4248123A
公开(公告)日：1981-02-03
申请号：US33096
申请日：1979-04-25
申请人： David A. Bunger , Dale M. Uetrecht
发明人： David A. Bunger , Dale M. Uetrecht
摘要： An electronic musical instrument using continuous tone generators capable of simulating the sounds of a conventional acoustical piano. The instrument includes a gating circuit featuring a timed switch travel circuit having a double-time constant for improved control of the dynamic range from the keyboard, and a soft pedal controlling the keying voltage to produce more realistic emulation of the dynamic effects of an acoustical piano. The gating circuit produces a double-time-constant envelope of nearly harmonically related signals for a more realistic piano timbre. The tone spectrum is also controlled as a function of signal level by means of a resistor matrix feeding selected inputs of an active ladder filter, in order to reproduce timbre variation with dynamic level.
摘要翻译： 一种使用能够模拟常规声学钢琴的声音的连续音调发生器的电子乐器。 仪器包括门控电路，其特征在于具有双倍时间常数的定时开关行程电路，用于改善对来自键盘的动态范围的控制，以及控制键控电压的软踏板，以产生更加逼真的仿真钢琴的动态效果 。 门控电路产生近似谐波相关信号的双时间常数包络，用于更现实的钢琴音色。 音调谱也通过馈送有源梯形滤波器的选定输入的电阻矩阵作为信号电平的函数来控制，以便用动态电平重现音色变化。
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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
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.
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公开(公告)号：US4137809A
公开(公告)日：1979-02-06
申请号：US567354
申请日：1975-04-11
申请人： David A. Bunger
发明人： David A. Bunger
摘要： An arpeggiator for an electronic organ, comprising a source of ramp voltage having selectively a slowly ascending and a slowly descending section or only a slowly ascending section followed by a rapid reset, an accordion-like voltage divider for said ramp voltage consisting of a cascade of diodes, each calling forth one of a group of three tone signals when conductive, or no tone signal if short circuited, circuits for determining which diodes shall be conductive and which short circuited according to which keys of an organ are actuated, the ramp voltage peaking when all conductive diodes have been ascendingly scanned by the ramp voltage, each conductive diode when scanned by the ramp voltage falling forth a gating signal for one of the tone signals called for by the actuated keys, in orderly sequence of tone signals. The rates of ascent and descent of the ramp are controllable, and may at will cover all octaves of the organ higher than that encompassing actuated keys, or a limited range, including one, of octaves. The gates employed are arranged to provide piano like tones of variable sustain durations, and the ramp controlled circuitry may be disabled to enable a piano mode rather than an arpeggiation mode.
摘要翻译： 一种用于电子器件的琶音器，包括斜坡电压源，其具有选择性地缓慢上升和缓慢下降部分或仅缓慢上升部分，随后快速复位，用于所述斜坡电压的手风琴状分压器包括由 二极管，当导电时每个呼叫三个音调信号中的一个，或者如果短路，则不产生音调信号，用于确定哪些二极管将导通并且根据器官的哪个键被激活而短路的电路，斜坡电压峰值 当所有导电二极管已经被斜坡电压上升扫描时，每个导通二极管被斜坡电压扫描时，按照按顺序的音调信号落下由致动键所要求的音调信号之一的选通信号。 斜坡的上升和下降速率是可控的，并且可以覆盖器官的所有八度音阶高于包含致动键的限制范围，或包括八度音阶的有限范围。 所使用的门被设置为提供可变维持持续时间的钢琴般的音调，并且斜坡控制电路可能被禁用以启用钢琴模式而不是琶音模式。
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4.发明授权Rythm rate and tempo monitor for electronic musical instruments having automatic rhythm accompaniment 失效具有自动节奏伴奏的电子乐器的节奏率和速度监视器
公开(公告)号：US4655113A
公开(公告)日：1987-04-07
申请号：US345798
申请日：1982-02-04
CPC分类号： G10H1/40 , G10H1/0008 , G10H2220/081 , G10H2220/086 , Y10S84/12
摘要： A microprocessor-based processing system for monitoring the tempo rate and rhythm in an electronic musical instrument having an automatic rhythm accompaniment unit. In a first mode of operation, the monitor displays the tempo of the rhythm accompaniment unit in numeric characters representing the number of beats per minute. In a second mode of operation, the monitor displays a numerical 1 representing the down beat in a first display device, a numerical 2 representing the second beat in adjoining display device, and successively incremented numerical integers associated with successive beats in successive numerical display devices until all numerical integers associated with beats have been displayed, thereby producing a timing display having a motion effect for synchronizing the music being played with the rhythm accompaniment tempo.
摘要翻译： 一种基于微处理器的处理系统，用于监视具有自动节奏伴奏单元的电子乐器中的速度和节奏。 在第一操作模式中，监视器以表示每分钟拍子数的数字字符显示节奏伴奏单元的速度。 在第二操作模式中，监视器显示表示第一显示装置中的向下拍子的数字1，表示相邻显示装置中的第二拍子的数字2，以及连续数字显示装置中连续拍摄相关联的递增的数字整数，直到 已经显示与节拍相关联的所有数字整数，从而产生具有用于使正在播放的音乐与节奏伴奏节奏同步的运动效果的定时显示。
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公开(公告)号：US4031795A
公开(公告)日：1977-06-28
申请号：US588627
申请日：1975-06-20
申请人： David A. Bunger
发明人： David A. Bunger
CPC分类号： G10H1/043 , G10H1/0091 , G10H2210/215 , G10H2210/251 , G10H2210/281
摘要： Modulation systems for electrical signals representing music in which synchronous vibrato and tremolo modulations are applied to a flute signal in one channel, the vibrator being produced by a bucket brigade modulator and the tremolo by a balanced modulator in cascade with the bucket brigade modulator, and in which in a second channel tones other than flute tones, and pedal tones, are separately treated to have independent vibratos, and in which balanced modulators for modifying the amplitude of the tone signals are concurrently controlled by a common expression voltage. In one modification flute signals are vibrato modulated in opposed phases, and passed via diverse filters to a common tremolo modulator. Provision is made for combining the inputs of the channels, the outputs of which are electroacoustically transduced by separated loudspeakers. Provision is made for slowly varying the frequency of a sub-sonic modulating oscillator, which is either turned off, or operates at about 1 or about 6 Hz., in proceeding from any one of these three values to any other, the rate of variation being such as to simulate the rate which occurs when the modulations are produced by rotation of a mechanical device such as a rotating loudspeaker.
摘要翻译： 用于表示音乐的电信号的调制系统，其中同步颤音和颤音调制被应用于一个声道中的音槽信号，所述振动器由铲斗旅队调制器产生，并且所述颤音由与所述铲斗旅队调制器级联的平衡调制器，以及 在第二声道中，除了长笛声音和踏板音之外的音调被单独处理以具有独立的振动，并且其中用于修改音调信号的幅度的平衡调制器同时由公共表达电压控制。 在一个修改中，长笛信号以对置相颤振调制，并通过不同的滤波器传递到共同的颤音调制器。 提供了组合通道的输入，其输出由分离的扬声器电声传导。 提供了缓慢改变声音调制振荡器的频率，该振荡器被关闭，或者在大约1或大约6Hz的情况下操作，从这三个值中的任何一个到任何其他值，变化率 例如模拟通过诸如旋转扬声器的机械装置的旋转产生调制时发生的速率。
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公开(公告)号：USRE29144E
公开(公告)日：1977-03-01
申请号：US657359
申请日：1976-02-12
申请人： David A. Bunger
发明人： David A. Bunger
CPC分类号： G10H1/42 , G10H1/38 , G10H2210/616
摘要： The present system provides an automatic chord accompaniment and/or an automatic rhythm system, actuation of only one left hand operated key producing proper distribution of root, third, fifth and seventh parts of a chord and root and fifth parts of a bass line. The bass and/or chord notes may be automatically rhythmically pulsed or selectively converted to a continuous mode, while the chord notes may be rhythmically pulsed to simultaneously sound different accompaniment instruments, such as guitar, piano, banjo, etc., at different rhythmic intervals, a touch bar being provided to select a minor chord when desired. A set of musical key selector buttons is provided which automatically provides seventh chords in correct positions for a given key selection. One or more accompaniment instruments may play different rhythmic sequences when seventh chords are sounded, while actuation of two or more keys, simultaneously, defeats the chord and bass accompaniment. .Iadd.
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