公开(公告)号：US20140360342A1

公开(公告)日：2014-12-11

申请号：US14301270

申请日：2014-06-10

申请人： The Board of Trustees of the Leland Stanford Junior University

发明人： Christopher D. Chafe

IPC分类号： G10H7/04

CPC分类号： G10H1/08 ,  G10H2250/475 ,  G10H2250/481

摘要： A time-varying formant is generated at a formant frequency by generating first and second harmonic phase signals having first and second harmonic numbers, respectively, in relation to a modulation frequency. The first and second harmonic phase signals are generated in proportion to a master phase signal, which varies at the modulation frequency, modulo a factor corresponding to their harmonic numbers. First and second sound signals, based on the first and second harmonic phase signals, are frequency modulated to create an arbitrarily rich harmonic spectrum, depending on an FM index. The time-varying formant is generated by generating a time-varying combination of the first and second harmonic sound signals, weighting the first and second harmonic sound signals in accordance with their spectral proximities to the formant frequency. One or more of the harmonic numbers are updated when the time-varying formant frequency passes the frequency of either sound signal.

摘要翻译： 通过分别产生相对于调制频率具有第一和第二谐波数的第一和第二谐波相位信号，以共振峰频率产生时变共振峰。 第一和第二谐波相位信号与主相位信号成比例地生成，该主相位信号以调制频率变化，模数为其谐波数的一个因子。 基于第一和第二谐波相位信号的第一和第二声音信号被频率调制以产生根据FM指数的任意丰富的谐波谱。 时变共振峰通过产生第一和第二谐波声音信号的时变组合，根据它们与共振峰频率的频谱接近度对第一和第二谐波声音信号进行加权来产生。 当时变共振峰频率通过任一声音信号的频率时，更新一个或多个谐波数。

公开(公告)号：US07638703B2

公开(公告)日：2009-12-29

申请号：US10730130

申请日：2003-12-09

申请人： Chung-Hsinen Lee

发明人： Chung-Hsinen Lee

IPC分类号： G10H1/04 ,  G10H6/00 ,  G10H7/00 ,  H03C1/00

CPC分类号： G10H7/10 ,  G10H2250/475

摘要： A method and system of audio synthesis capable of reducing CPU load is disclosed, which establishes a parameter look-up table in a read-only memory (ROM). When a computer system synthesizes audio signals, the required coefficients are obtained from the table, which relatively reduces the amount of parameter transferred between an audio chip and a central processing unit (CPU). Thus, the load of the CPU can be reduced.

摘要翻译： 公开了一种能够减少CPU负载的音频合成方法和系统，其在只读存储器（ROM）中建立参数查找表。 当计算机系统合成音频信号时，从表中获得所需的系数，这相对减少了在音频芯片和中央处理单元（CPU）之间传送的参数的数量。 因此，可以减少CPU的负载。

公开(公告)号：US5665929A

公开(公告)日：1997-09-09

申请号：US497035

申请日：1995-06-30

申请人： Qiujie Dong ,  Michael V. Jenkins ,  Salvador R. Bernadas

发明人： Qiujie Dong ,  Michael V. Jenkins ,  Salvador R. Bernadas

IPC分类号： G10H1/04 ,  G10H7/06 ,  G10H7/00

CPC分类号： G10H1/04 ,  G10H7/06 ,  G10H2250/475

摘要： A frequency modulation (FM) tone signal generator for generating a FM tone signal is disclosed. The tone signal generator includes a waveform generator having a plurality of wave tables, a selector and an enveloper. The waveform generator furnishes a waveform signal in response to a phase angle address signal. Each wave table stores a different waveform. The selector selects one of the wave tables in response to a plurality of selection signals such that the selected wave table largely provides the waveform signal upon being addressed largely by the phase angle address signal. Selection of the selected wave table varies with each selection signal. The enveloper impresses an envelope signal on the waveform signal. The envelope signal is used as a carrier or modulator for generating the FM tone signal.

摘要翻译： 公开了一种用于产生FM音调信号的调频（FM）音调信号发生器。 音调信号发生器包括具有多个波形表的波形发生器，选择器和启动器。 波形发生器响应于相位角地址信号提供波形信号。 每个波形表存储不同的波形。 选择器响应于多个选择信号选择一个波形表，使得所选择的波形表在被相位角地址信号大量地寻址时大大地提供波形信号。 选择的波形表的选择随每个选择信号而变化。 启动器对波形信号施加一个包络信号。 包络信号用作生成FM音调信号的载波或调制器。

公开(公告)号：US4649783A

公开(公告)日：1987-03-17

申请号：US614404

申请日：1984-05-24

申请人： Alexander R. Strong ,  Kevin J. Karplus

发明人： Alexander R. Strong ,  Kevin J. Karplus

IPC分类号： G10H7/02 ,  G10H1/00

CPC分类号： G10H7/02 ,  G10H2250/475

摘要： A musical instrument employing probabilistic wavetable-modification method of producing musical sound. A randomly initialized wavetable which is periodically accessed to provide an output signal which determines the musical sound. The output signal from the wavetable is probabilistically modified and stored back into the wavetable as modified data. The modified data, after a delay, is accessed from the wavetable and thereby becomes a new output signal. This process is periodically repeated whereby each new output signal is stored (after possibly being modified) back into the wavetable to produce rich and natural musical sound.

摘要翻译： 一种使用产生音乐声音的概率波动改变方法的乐器。 周期性访问的随机初始化的波表，以提供确定音乐声音的输出信号。 波形图的输出信号被概率地修改并作为修改数据存储回波形。 延迟后的修改后的数据从波形图进行访问，从而成为新的输出信号。 周期性地重复该过程，由此将每个新的输出信号（可能被修改）存储回波头中以产生丰富和自然的音乐声音。

公开(公告)号：US10083682B2

公开(公告)日：2018-09-25

申请号：US15286015

申请日：2016-10-05

申请人： YAMAHA CORPORATION

发明人： Hiroyuki Kojima

IPC分类号： G10H7/00 ,  G10H7/02 ,  G10H1/18

CPC分类号： G10H7/008 ,  G10H1/183 ,  G10H7/006 ,  G10H7/02 ,  G10H2250/475

摘要： A content data generating device includes a first storage configured to store content data including at least either video information or audio information, a second storage configured to store variation data representing change of a parameter on the content data, a designator configured to designate a portion of the variation data, and a content data generator configured to process the content data according to a value of the parameter of the portion of the variation data designated by the designator to generate processed content data.

公开(公告)号：US6051772A

公开(公告)日：2000-04-18

申请号：US893148

申请日：1997-07-15

申请人： Charles J. Cameron ,  Gary M. Catlin

发明人： Charles J. Cameron ,  Gary M. Catlin

IPC分类号： G10H1/06 ,  G10H7/00 ,  G10H1/14 ,  G10H1/40

CPC分类号： G10H1/06 ,  G10H7/002 ,  G10H2250/475 ,  Y10S84/12 ,  Y10S84/27

摘要： A system and method are disclosed for emulating a frequency modulation sound chip with minimal hardware and utilizing the excess capacity of current computer systems. In one embodiment, the frequency modulation emulation apparatus includes a frequency modulation emulator suitable to communicate with a computer system. The frequency modulation emulator provides an addressable memory space, substantially similar to an emulated addressable memory space of the emulated frequency modulation sound chip, such that a frequency modulation application implemented on the computer system can communicate with the frequency modulation emulator. The emulator chip receives audio data through the addressable memory space from the frequency modulation application and, the frequency modulation application is unaware that the frequency modulation emulator is receiving the audio data rather than the emulated frequency modulation sound chip. A frequency modulation generator is implemented on the computer system. The frequency modulation generator receives the audio data from the frequency modulation generator. The frequency modulation generator processes the audio data to produce an audio signal in a manner that is substantially similar to the operation of the emulated frequency modulation sound chip. Thus, minimal hardware is used to emulate a frequency modulation sound chip, and utilizing the excess capacity of current computer systems.

摘要翻译： 公开了一种用于以最小硬件模拟频率调制声音芯片并利用当前计算机系统的过剩容量的系统和方法。 在一个实施例中，频率调制仿真装置包括适于与计算机系统通信的频率调制仿真器。 频率调制仿真器提供可寻址的存储器空间，其基本上类似于仿真的频率调制声音芯片的可仿真的可寻址存储器空间，使得在计算机系统上实现的频率调制应用可以与频率调制仿真器通信。 仿真器芯片通过来自频率调制应用的可寻址存储器空间接收音频数据，并且调频应用不知道调频仿真器正在接收音频数据而不是模拟调频声音芯片。 在计算机系统上实现频率调制发生器。 频率调制发生器从频率调制发生器接收音频数据。 频率调制发生器以与仿真的频率调制声音芯片的操作基本相似的方式处理音频数据以产生音频信号。 因此，使用最小的硬件来模拟调频声音芯片，并利用当前计算机系统的过剩容量。

公开(公告)号：US5744741A

公开(公告)日：1998-04-28

申请号：US583985

申请日：1996-01-11

申请人： Yasuyoshi Nakajima ,  Masahiro Koyama

发明人： Yasuyoshi Nakajima ,  Masahiro Koyama

IPC分类号： G10H1/12 ,  G10H5/00 ,  G10H7/00 ,  G10H1/02 ,  G10H1/057 ,  G10H1/06

CPC分类号： G10H7/006 ,  G10H1/125 ,  G10H5/007 ,  G10H7/004 ,  G10H2220/106 ,  G10H2250/161 ,  G10H2250/261 ,  G10H2250/475 ,  G10H2250/481 ,  G10H2250/535 ,  G10H2250/621

摘要： A plurality of digital signal processors are provided in parallel relation to each other, and a series of operations for desired sound signal synthesis or processing is divided into a plurality of operation groups to be allocated to the signal processors. First and second buses are connected to each of the signal processors so that parameters necessary for the operations are distributively supplied to the signal processors via the first bus and the operation result of each of the signal processors is transferred to another digital signal processor or an output port via the second bus. One digital signal processor receives the output data from another digital signal processor via the second bus so as to perform a predetermined operation using the received data. The desired sound signal processing is thus executed by combinations of the operations performed by such signal processors. Where sound signal processing is executed in a plurality of channels on a time-divisional basis, the time-divisional channel timing of each digital signal processor is set independently of that of other digital signal processors. By setting synchronized tone generation designating data for each channel, synchronized tone generation is controllably performed in selected channels.

摘要翻译： 多个数字信号处理器彼此并联提供，并且一系列用于期望的声音信号合成或处理的操作被划分为要分配给信号处理器的多个操作组。 第一和第二总线连接到每个信号处理器，使得操作所需的参数经由第一总线分配提供给信号处理器，并且每个信号处理器的操作结果被传送到另一个数字信号处理器或输出 端口通过第二条总线。 一个数字信号处理器经由第二总线从另一个数字信号处理器接收输出数据，以便使用接收的数据执行预定的操作。 因此，通过这些信号处理器执行的操作的组合来执行期望的声音信号处理。 在以时分为基础在多个通道中执行声音信号处理的情况下，每个数字信号处理器的时分信道定时独立于其它数字信号处理器的时分设置。 通过设置每个通道的同步音产生指定数据，可以在选定的通道中可控地执行同步音产生。

公开(公告)号：US4883067A

公开(公告)日：1989-11-28

申请号：US49992

申请日：1987-05-15

申请人： Joel Knispel ,  Geoffrey Wright

发明人： Joel Knispel ,  Geoffrey Wright

IPC分类号： A61B5/0482 ,  A61M21/00 ,  G10H1/00

CPC分类号： A61B5/0482 ,  A61M21/00 ,  G10H1/00 ,  A61M2021/0027 ,  A61M2230/10 ,  G10H2220/376 ,  G10H2230/351 ,  G10H2250/475

摘要： A method and apparatus for applying a musical feedback signal to the human brain, or any other brain, to induce controllable psychological and physiological responses. A signal representing the ongoing electroencephalographic (EEG) signal of a brain preferably is obtained from the electrode location on the scalp known as CZ or P3 in clinical notation. A signal processor converts the ongoing EEG into electrical signals which are converted into music by synthesizers. The music is acoustically fed back to the brain after a time delay calculated to shift the phase of the feedback in order to reinforce specific or desired ongoing EEG activity from the scalp position of interest. The music is comprised of at least one voice that follows the moment-by-moment contour of the EEG in real time to reinforce the desired EEG activity. The music drives the brain into resonance with the music to provide a closed loop or physiological feedback effect. Preferably, the musical feedback comprises additional voices that embody psychoacoustic principles as well as provide the content and direction normally supplied by the therapist in conventional biofeedback. The invention contemplates numerous applications for the results obtained.

摘要翻译： 一种用于将音乐反馈信号应用于人脑或任何其他大脑以诱导可控心理和生理反应的方法和装置。 优选地，从临床上称为CZ或P3的头皮上的电极位置获得代表脑的持续脑电图（EEG）信号的信号。 信号处理器将正在进行的EEG转换为由信号合成器转换成音乐的电信号。 在计算时间延迟之后，将音乐反馈回大脑以改变反馈阶段，以便从感兴趣的头皮位置加强特定或期望的正在进行的EEG活动。 该音乐包括至少一个跟随EEG的瞬间轮廓的语音，以加强所需的EEG活动。 音乐驱动大脑与音乐共鸣，提供闭环或生理反馈效果。 优选地，音乐反馈包括体现心理声学原理的附加声音，以及提供常规生物反馈中由治疗师通常提供的内容和方向。 本发明考虑了获得的结果的许多应用。

公开(公告)号：US4622877A

公开(公告)日：1986-11-18

申请号：US743563

申请日：1985-06-11

申请人： Alexander R. Strong

发明人： Alexander R. Strong

IPC分类号： G10H7/04 ,  G10H1/00

CPC分类号： G10H7/04 ,  G10H2250/301 ,  G10H2250/475 ,  G10H2250/545

摘要： A musical instrument for producing musical sound including a wavetable for storing a plurality of samples in wavetable locations. An address generator addresses wavetable locations for selecting stored samples to provide audio output signals and for selecting stored samples to be modified and restored. New addresses for specifying wavetable locations are provided employing a modification operation independent from an output operation.

摘要翻译： 一种用于产生音乐声音的乐器，包括用于将多个样本存储在波形位置中的波头。 地址生成器处理用于选择存储的样本以提供音频输出信号的波形位置，并且用于选择要修改和恢复的存储样本。 使用独立于输出操作的修改操作来提供用于指定波形位置的新地址。

公开(公告)号：US4503745A

公开(公告)日：1985-03-12

申请号：US404134

申请日：1982-08-02

申请人： Melville Clark, Jr. ,  David A. Luce

发明人： Melville Clark, Jr. ,  David A. Luce

IPC分类号： G10H1/057 ,  G10H1/18 ,  G10H1/34

CPC分类号： G10H1/34 ,  G10H1/057 ,  G10H1/18 ,  G10H2210/211 ,  G10H2210/401 ,  G10H2210/411 ,  G10H2250/475 ,  Y10S84/07

摘要： A new, performer played, real time, multitonal, multimbral musical instrument consists of speed and force sensitive keys in which time domain multiplexing is used to find and associate one and only one tone generator, not otherwise busy, with any key that is depressed. The sound generator disclosed can provide very realistic simulations of the flute, oboe, trumpet, French horn, trombone through the provision of various types of modulations in amplitude and frequency of the various partials, as is characteristic of each instrument simulated, and filtered noise. Glissandi are provided from one note to another and are controlled from the pair of keys involved by the relative pressure with which they are depressed. For the nonpercussive tonalities, the speed with which a key is depressed, which is determined by differentiating the force, may be used to cause the attack transient to behave in a manner very characteristic of the instrument being simulated. The force with which a key is depressed is determined from the rate of rise of the potential across a capacitive keying system excited through a resistor. Percussive sound generators are provided also; the intensity of the note generated by these generators is determined by the speed with which the associated key is depressed. The force with which the associated key is depressed can be used to determine the rate of automatic repetition of the note. The speed with which a key is depressed can also be used for nonpercussive instruments to alter the character of the attack transient.

摘要翻译： 一个新的，表演者演奏的，实时的，多人的多重乐器包括速度和力敏感键，其中使用时域复用来发现和关联一个和唯一一个音调发生器，而不是其他忙碌与任何按下的键。 公开的声发生器可以通过提供各种偏差的幅度和频率的各种类型的调制来提供对长笛，双簧管，喇叭，法国号，长号的非常逼真的模拟，如模拟的每个乐器的特征和滤波的噪声。 Glissandi从一个音符提供给另一个音符，并且由相关压力所涉及的一对键控制，并且它们被压下。 对于非敲击性色调，可以使用通过区分力来确定键被按压的速度，以使得攻击瞬态以正在被模拟的仪器的非常特征的方式表现。 键被按下的力由电阻通过电阻激励的电容键控系统的电位上升率确定。 还提供冲击声发生器; 这些发生器产生的音符的强度由相关键被按下的速度决定。 关联键被按下的力可用于确定音符的自动重复速率。 按键的速度也可以用于非打击乐器来改变攻击瞬态的特征。