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公开(公告)号：US20200043455A1
公开(公告)日：2020-02-06
申请号：US16517631
申请日：2019-07-21
申请人： Miyoko Misawa
发明人： Daichi Misawa
摘要： [Technical problem] Circulatory sound regulation that changes environmental sound into input sound, converted sound with arbitrarily regulatory frequency component, arbitrarily regulatory amplitude or both of them, output sound, another input sound synthesized with this output sound and an environmental sound, and another converted sound made from this input sound. [Solution] Apparatus comprising: input means that receives environmental sound from arbitrary environment as an input sound; conversion means that converts the input sound into a converted sound that contains arbitrarily regulatory frequency component including frequency component that approximates to principle oscillator, arbitrarily regulatory amplitude or both; and output means that transmits the converted sound to environment as an output sound; whereby the input means receives synthetic sound synthesized with the output sound and environmental sound as an input sound again, and the conversion means converts this input sound further into another converted sound.
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公开(公告)号：US5432294A
公开(公告)日：1995-07-11
申请号：US25965
申请日：1993-03-03
申请人： Bart Falzarano, Jr.
发明人： Bart Falzarano, Jr.
CPC分类号： G10H5/10 , G10H2230/351
摘要： A microprocessor provides a pulse width modulated pulse train at a predetermined frequency to a tuned resonant circuit having a transducer element. The first pulse has a predetermined width. The pulse widths of successive pulses are decreased in a predetermined manner until the pulse width reaches a minimally desired width. The next generated pulse has the first predetermined width and each successive width is decreased in the same predetermined manner. This pattern is generated repeatedly. Each one of these generated patterns produces an audible waveform from the tuned resonant circuit which changes over time. If the pulse train frequency, the pulse width modulation, and the circuit's resonant frequency are chosen correctly, the audible waveform will have the same characteristics as the waveform produced by a specified bell which has been struck.
摘要翻译： 微处理器以具有换能器元件的调谐谐振电路提供预定频率的脉宽调制脉冲串。 第一脉冲具有预定的宽度。 连续脉冲的脉冲宽度以预定的方式减小，直到脉冲宽度达到最小期望的宽度。 下一个产生的脉冲具有第一预定宽度，并以相同的预定方式减小每个相继的宽度。 此模式会重复生成。 这些产生的图案中的每一个从调谐谐振电路产生可听波形，其随时间而变化。 如果正确选择了脉冲序列频率，脉冲宽度调制和电路的谐振频率，则可听波形将具有与被击中的指定铃声产生的波形相同的特性。
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公开(公告)号：US4277697A
公开(公告)日：1981-07-07
申请号：US3585
申请日：1979-01-15
申请人： George R. Hall , Robert J. Hall
发明人： George R. Hall , Robert J. Hall
摘要： Apparatus for controlling the duty cycle of a rectangular input signal so that the duty cycle normally remains constant irrespective of the frequency of the input signal, but can be adjusted with accuracy. A generator initiates a rectangular output signal in synchronism with the input signal. A comparator enables the generator to terminate the output signal after a time period related to the relative amplitudes of the output signal and another reference voltage. An adjustment transistor can adjust the amplitude of the reference voltage in order to control the overall duty cycle of the output signal.
摘要翻译： 用于控制矩形输入信号的占空比的装置，使得占空比通常保持恒定，而与输入信号的频率无关，但是可以精确地调整。 发生器与输入信号同步地发起矩形输出信号。 比较器使发生器在与输出信号和另一参考电压的相对幅度相关的时间段之后终止输出信号。 调节晶体管可以调节参考电压的幅度，以便控制输出信号的总占空比。
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公开(公告)号：US4203337A
公开(公告)日：1980-05-20
申请号：US917313
申请日：1978-06-20
申请人： Harold O. Schwartz , Dennis E. Kidd
发明人： Harold O. Schwartz , Dennis E. Kidd
摘要： In a modular, expandable organ system comprising a plurality of large scale integrated circuit (LSI) chips an LSI chip is provided which produces frequencies corresponding to notes played on an organ keyboard. Outputs of different duty cycles of rectangular waves are provided for best simulating desired sounds. Other outputs are provided in which the notes are in octave groups facilitating filtering thereof. Each group of outputs has different attack and decay characteristics respectively under the control of the organist so that similar or different types of attack and decay may be provided on different outputs.The present LSI chip provides three generators on one chip. The chips are capable of being interconnected such that any multiple of three generators may be provided.
摘要翻译： 在包括多个大规模集成电路（LSI）芯片的模块化可扩展器官系统中，提供产生对应于在器官键盘上播放的笔记的频率的LSI芯片。 提供矩形波的不同占空比的输出，以最佳地模拟所需的声音。 提供了其他输出，其中音符是八度组，便于滤波。 每组输出在分解器的控制下分别具有不同的攻击和衰减特性，可以在不同的输出上提供相似或不同类型的攻击和衰减。 本LSI芯片在一个芯片上提供三个发生器。 这些芯片能够互连，使得可以提供三个发电机中的任何一个。
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公开(公告)号：US4177706A
公开(公告)日：1979-12-11
申请号：US922803
申请日：1978-07-07
申请人： Alan J. Greenberger
发明人： Alan J. Greenberger
CPC分类号： G10H7/002 , G10H2230/071
摘要： This disclosure pertains to a digitalized music synthesizer functioning in the real time domain to continuously update, in an asynchronous manner, a continuing approximation of a desired waveform by utilizing its memory of the recent history of the operation of the keyboard of the apparatus. A real time clock and a microcomputer are both driven by a single crystal oscillator, operating at any arbitrary frequency that need not correspond with the frequency of the fundamental or harmonic waves to be produced by the apparatus. A memory of the recent history of keyboard events is maintained. The microcomputer utilizes an algorithm employing square waves as a basis and a differential correcting technique which minimizes the quantity of square wave defining terms that need be computed by only recomputing at each time, corrections to the previous computation. The digitalized output, represented by summing the transient amplitudes comprising the updated approximation to the desired waveform, is fed into a digital to analog converter, an amplifier and a speaker system.
摘要翻译： 本公开涉及一种在实时时域中工作的数字化音乐合成器，通过利用其对装置的键盘操作的最近历史的存储，以异步的方式持续更新期望波形的持续近似。 实时时钟和微型计算机均由单晶振荡器驱动，以任何不需要与设备产生的基波或谐波频率对应的任意频率工作。 记录了最近的键盘事件历史记录。 微型计算机利用采用方波作为基础的算法和差分校正技术，其最小化仅在每次重新计算时需要计算的方波量定义项的量，并对之前的计算进行校正。 将包括更新的近似值的瞬态幅度与期望波形相加所表示的数字化输出馈送到数模转换器，放大器和扬声器系统。
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公开(公告)号：US4170160A
公开(公告)日：1979-10-09
申请号：US914059
申请日：1978-06-09
申请人： Jong Guo
发明人： Jong Guo
摘要： An electronic musical instrument includes a linear voltage divider network including a plurality of equal series resistance elements for generating a first output voltage as a function of the state of a plurality of tone select keys. This first voltage is converted to a second voltage which selectively varies exponentially as a function of the selected tone. The second voltage is compared with a ramp generator output to set and reset a latch which generates an audio frequency signal thereby. The audio frequency signal is coupled to an octave generator controlled by octave select keys for outputting the tone in a selected octave for output as sound via a speaker. Sharp and flat keys are also provided to cause the first voltage to vary in a way which emulates the functioning of a standard keyboard.
摘要翻译： 电子乐器包括线性分压器网络，其包括多个相等的串联电阻元件，用于产生作为多个音调选择键的状态的函数的第一输出电压。 该第一电压被转换成第二电压，其选择性地按照所选音调的函数变化地变化。 将第二电压与斜坡发生器输出进行比较，以设置和复位产生音频信号的锁存器。 音频信号被耦合到由八度音阶选择键控制的八度发生器，用于输出所选择的八度音调中的音调，以便通过扬声器作为声音输出。 还提供了夏普和平键以使得第一电压以模拟标准键盘功能的方式变化。
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公开(公告)号：US2576585A
公开(公告)日：1951-11-27
申请号：US2177948
申请日：1948-04-19
申请人： SELECTRONIES INC
发明人： WILLIAM FLEMING
IPC分类号： G10H5/10
CPC分类号： G10H5/10
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公开(公告)号：US2555038A
公开(公告)日：1951-05-29
申请号：US71460146
申请日：1946-12-06
申请人： BALDWIN CO
发明人： JONES EDWARD M
IPC分类号： G10H5/10
CPC分类号： G10H5/10
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公开(公告)号：US2340002A
公开(公告)日：1944-01-25
申请号：US39846841
申请日：1941-06-17
申请人： MCKELLIP
发明人： MCKELLIP SPENCER W , FORD JOHN R
IPC分类号： G10H5/10
CPC分类号： G10H5/10
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