公开(公告)号：US5308918A

公开(公告)日：1994-05-03

申请号：US869448

申请日：1992-04-16

申请人： Akira Yamauchi ,  Toshifumi Kunimoto ,  Chifumi Takeuchi ,  Iwao Higashi

发明人： Akira Yamauchi ,  Toshifumi Kunimoto ,  Chifumi Takeuchi ,  Iwao Higashi

IPC分类号： G10H1/00 ,  G10H1/12 ,  G10H5/00 ,  H03H17/00 ,  H03H17/06 ,  G10H5/02

CPC分类号： H03H17/0027 ,  G10H1/0091 ,  G10H1/12 ,  G10H5/007 ,  H03H17/06 ,  G10H2250/115 ,  G10H2250/521 ,  Y10S84/09 ,  Y10S84/10 ,  Y10S84/26

摘要： The present invention provides a signal delay circuit for substantially steplessly changing a delay interval. The signal delay circuit is composed essentially of a delay controller, a first delay circuit, and a second delay circuit. The delay controller generates and outputs control data consisting of a real number bearing control information for controlling the delay interval, the real number consists of an integral portion and a fractional portion. The first delay circuit receives an incidental signal, delays the incidental signal for creating a first intermediate signal, and outputs the first intermediate signal, the first intermediate signal being delayed with respect to the incidental signal by an interval which is a product of a predetermined cardinal interval and the integral portion of the real number. The second delay circuit receives the first intermediate signal, produces at least one second intermediate signal by delaying the first intermediate signal by at least one interval which is an integral multiple of the predetermined cardinal interval, interpolates the first intermediate signal and said at least one second intermediate signal for producing a delayed signal, and outputs the delayed signal, the delayed signal being delayed with respect to the first intermediate signal by an interval which is a product of the predetermined cardinal interval and the fractional portion of the real number. As a result, the delayed signal is delayed with respect to the incidental signal by a delay interval which is a product of the predetermined cardinal interval and the real number output by the delay control means.

摘要翻译： 本发明提供一种用于基本上无级改变延迟间隔的信号延迟电路。 信号延迟电路基本上由延迟控制器，第一延迟电路和第二延迟电路组成。 延迟控制器产生并输出由用于控制延迟间隔的实数轴承控制信息组成的控制数据，实数由整体部分和分数部分组成。 第一延迟电路接收附带信号，延迟用于产生第一中间信号的附带信号，并且输出第一中间信号，第一中间信号相对于附带信号延迟一个间隔，该间隔是预定基数 间隔和实数的积分部分。 第二延迟电路接收第一中间信号，通过将第一中间信号延迟至少一个间隔，产生至少一个第二中间信号，该间隔是预定基本间隔的整数倍，内插第一中间信号和所述至少一个第二中间信号 用于产生延迟信号的中间信号，并且输出延迟信号，延迟信号相对于第一中间信号延迟一个间隔，该间隔是预定基数和实数的分数部分的乘积。 结果，延迟信号相对于附带信号被延迟延迟间隔，该延迟间隔是预定的基本间隔与由延迟控制装置输出的实数的乘积的乘积。

公开(公告)号：US5245127A

公开(公告)日：1993-09-14

申请号：US869860

申请日：1992-04-16

申请人： Akira Yamauchi ,  Toshifumi Kunimoto ,  Chifumi Takeuchi ,  Iwao Higashi

发明人： Akira Yamauchi ,  Toshifumi Kunimoto ,  Chifumi Takeuchi ,  Iwao Higashi

IPC分类号： G10H1/00 ,  G10H1/12 ,  G10H5/00 ,  H03H17/06

CPC分类号： G10H1/12 ,  G10H1/0091 ,  G10H5/007 ,  H03H17/06 ,  G10H2250/115 ,  G10H2250/521 ,  Y10S84/10 ,  Y10S84/26

摘要： The present invention provides a signal delay circuit for substantially steplessly changing a delay interval. The signal delay circuit is composed essentially of a delay controller, a first delay circuit, and a second delay circuit. The delay controller generates and outputs control data consisting of a real number bearing control information for controlling the delay interval, the real number consists of an integral portion and a fractional portion. The first delay circuit receives an incidental signal, delays the incidental signal for creating a first intermediate signal, and outputs the first intermediate signal, the first intermediate signal being delayed with respect to the incidental signal by an interval which is a product of a predetermined cardinal interval and the integral portion of the real number. The second delay circuit receives the first intermediate signal, produces at least one second intermediate signal by delaying the first intermediate signal by at least one interval which is an integral multiple of the predetermined cardinal interval, interpolates the first intermediate signal and said at least one second intermediate signal for producing a delayed signal, and outputs the delayed signal, the delayed signal being delayed with respect to the first intermediate signal by an interval which is a product of the predetermined cardinal interval and the fractional portion of the real number. As a result, the delayed signal is delayed with respect to the incidental signal by a delay interval which is a product of the predetermined cardinal interval and the real number output by the delay control means.

摘要翻译： 本发明提供一种用于基本上无级改变延迟间隔的信号延迟电路。 信号延迟电路基本上由延迟控制器，第一延迟电路和第二延迟电路组成。 延迟控制器产生并输出由用于控制延迟间隔的实数轴承控制信息组成的控制数据，实数由整体部分和分数部分组成。 第一延迟电路接收附带信号，延迟用于产生第一中间信号的附带信号，并且输出第一中间信号，第一中间信号相对于附带信号延迟一个间隔，该间隔是预定基数 间隔和实数的积分部分。 第二延迟电路接收第一中间信号，通过将第一中间信号延迟至少一个间隔，产生至少一个第二中间信号，该间隔是预定基本间隔的整数倍，内插第一中间信号和所述至少一个第二中间信号 用于产生延迟信号的中间信号，并且输出延迟信号，延迟信号相对于第一中间信号延迟一个间隔，该间隔是预定基数和实数的分数部分的乘积。 结果，延迟信号相对于附带信号被延迟延迟间隔，该延迟间隔是预定的基本间隔与由延迟控制装置输出的实数的乘积的乘积。

公开(公告)号：US5359146A

公开(公告)日：1994-10-25

申请号：US838572

申请日：1992-02-19

申请人： Tomoyuki Funaki ,  Iwao Higashi ,  Toru Kitayama ,  Hideyuki Masuda ,  Toshifumi Kunimoto

发明人： Tomoyuki Funaki ,  Iwao Higashi ,  Toru Kitayama ,  Hideyuki Masuda ,  Toshifumi Kunimoto

IPC分类号： G10H1/08 ,  G10H1/16 ,  G10H5/00 ,  G10H1/057 ,  G10H1/12

CPC分类号： G10H1/08 ,  G10H1/16 ,  G10H5/007 ,  G10H2250/095 ,  G10H2250/115 ,  G10H2250/445 ,  G10H2250/521 ,  Y10S84/09 ,  Y10S84/10

摘要： A musical tone synthesizing apparatus provides a time-varying signal processing circuit the transfer function of which gradually varies over time in order to gradually vary over time the tone color of a synthesized musical tone. A number of time-varying signal processing circuits are presented. An interpolation-type-time-varying signal processing circuit is provided with interpolators for interpolating control parameters generated based on a desired musical tone, a signal processing circuit carrying out a signal operation based on the interpolated control parameters on an input signal incomming thereto. A mixing-type or distribution-type time-varying signal processing circuit is provided with a plurality of signal processing circuits for carrying out signal operations based on control parameters on input signals, and with a mixer which mixes the output signals of the signal processing circuits in such a way that the mixing ratio gradually varies over time or with a distribution circuit which distributes an input signal to the signal processing circuits in such a way that the distribution ratio gradually varies over time.

摘要翻译： 音乐合成装置提供随着时间逐渐变化的传递函数的时变信号处理电路，以便随着时间逐渐变化合成乐音的音色。 提出了多个时变信号处理电路。 内插型时变信号处理电路具有用于内插基于期望乐音产生的控制参数的内插器，信号处理电路，基于内插控制参数对输入信号进行信号处理而进行信号操作。 混合型或分布式时变信号处理电路具有多个信号处理电路，用于基于输入信号上的控制参数进行信号操作，并且具有混合信号处理电路的输出信号的混频器 以这样的方式使得混合比随时间逐渐变化，或者以将分配比率逐渐随时间变化的方式将输入信号分配给信号处理电路的分配电路逐渐变化。

公开(公告)号：US5432296A

公开(公告)日：1995-07-11

申请号：US108993

申请日：1993-08-18

申请人： Chifumi Takeuchi ,  Iwao Higashi

发明人： Chifumi Takeuchi ,  Iwao Higashi

IPC分类号： G10H7/08 ,  G10H5/00 ,  G10K15/12 ,  G10H1/12

CPC分类号： G10H5/007 ,  G10H2250/061 ,  G10H2250/115 ,  G10H2250/435 ,  G10H2250/521 ,  Y10S84/09 ,  Y10S84/10

摘要： The musical tone synthesizing apparatus is mainly configured by a closed loop which at least provides a delay circuit and an all-pass filter. The delay circuit delays an input signal (e.g., excitation wave signal) by a first delay time corresponding to a certain integral number of sampling periods. The all-pass filter functions to at least delay an output of the delay circuit by a second delay time corresponding to a decimal fraction of the sampling period, so that an output of the all-pass filter is fed back to the delay circuit. The whole delay time of the closed loop consists of the first and second delay times which can be respectively controlled. Thus, a musical tone signal representing a synthesized musical tone (e.g., an attenuating sound which is produced from an percussion instrument) is picked up from the closed loop. Incidentally, the whole configuration of the closed loop can be embodied by a digital signal processor (DSP).

摘要翻译： 音乐合成装置主要由至少提供延迟电路和全通滤波器的闭环配置。 延迟电路将输入信号（例如，激励波信号）延迟对应于一定整数个采样周期的第一延迟时间。 全通滤波器用于至少将延迟电路的输出延迟对应于采样周期的小数部分的第二延迟时间，使得全通滤波器的输出反馈到延迟电路。 闭环的整个延迟时间由可分别控制的第一和第二延迟时间组成。 因此，从闭环拾取表示合成乐音（例如，从打击乐器产生的衰减声音）的乐音信号。 顺便提及，闭环的整体结构可以由数字信号处理器（DSP）来体现。

公开(公告)号：US5461189A

公开(公告)日：1995-10-24

申请号：US267842

申请日：1994-06-28

申请人： Iwao Higashi ,  Mitsuru Fukui ,  Toshifumi Kunimoto

发明人： Iwao Higashi ,  Mitsuru Fukui ,  Toshifumi Kunimoto

IPC分类号： G10H5/00 ,  H03G3/00

CPC分类号： G10H5/007 ,  G10H2250/461 ,  G10H2250/515 ,  G10H2250/521 ,  G10H2250/535

摘要： Electronic musical instrument comprises a musical tone synthesis device, a memory and pitch control device. The musical tone synthesis device processes input signals based on at least one parameter, and synthesizes and outputs musical tones with pitches in accordance with the values of the parameters. The memory stores initial values of the parameters which generate a musical tone having a target pitch. The pitch control device detects a difference between the target pitch of the musical tone and a pitch of the musical tone outputted form the musical tone synthesis device. And, the pitch control device outputs a value of the parameter which will eliminate the difference to the musical tone synthesis device.

摘要翻译： 电子乐器包括乐音合成装置，存储器和音调控制装置。 音乐合成装置基于至少一个参数来处理输入信号，并根据参数的值合成并输出具有间距的乐音。 存储器存储产生具有目标音高的乐音的参数的初始值。 俯仰控制装置检测乐音的目标音高与从音乐合成装置输出的音调的音调之间的差异。 并且，音调控制装置输出将消除与音乐合成装置的差异的参数的值。

公开(公告)号：US5641931A

公开(公告)日：1997-06-24

申请号：US411478

申请日：1995-03-28

申请人： Yoichiro Ogai ,  Iwao Higashi

发明人： Yoichiro Ogai ,  Iwao Higashi

IPC分类号： G10H1/12 ,  G10H5/00

CPC分类号： G10H1/125 ,  G10H5/007 ,  G10H2250/521

摘要： In a device which excites an oscillating signal in a closed loop containing a delay circuit and a filter so as to synthesize a sound of pitch corresponding to the total delay time in the closed loop, arithmetic operations are performed in the closed loop, in response to a change in a color controlling coefficient caused during generation of the sound, for interpolating delayed output signals from plural points in the loop having different delay time. This interpolation compensates for a variation in the signal delay time in the closed loop resultant from the change in the filter coefficient, to allow the entire closed loop to provide such a total delay time that excites oscillation corresponding to a desired pitch. The closed loop also includes first and second filters. When generation of the sound is to be started, the delay time adjustment or pitch modification is performed by using, as the first filter, an all-pass filter that has the advantage of having no adverse effect on the frequency characteristic of sound. During generation of the sound, so as to avoid the adverse effect resultant from a variation in the coefficient of the all-pass filter, variable control of the delay time or variation control of the pitch is performed by using, as the second filter, a low-pass filter that functions as a delay interpolator.

摘要翻译： 在包含延迟电路和滤波器的闭环中激励振荡信号以便合成对应于闭环中的总延迟时间的音调的声音的装置中，在闭环中执行运算，响应于 在产生声音期间引起的颜色控制系数的变化，用于内插具有不同延迟时间的循环中的多个点的延迟输出信号。 该内插补偿由滤波器系数的变化导致的闭环中的信号延迟时间的变化，以允许整个闭环提供激励对应于期望间距的振荡的总延迟时间。 闭环还包括第一和第二过滤器。 当要开始声音的产生时，通过使用具有对声音的频率特性没有不利影响的全通滤波器作为第一滤波器来执行延迟时间调整或音调修改。 在声音的产生期间，为了避免由全通滤波器的系数的变化引起的不利影响，可以通过使用作为第二滤波器的延迟时间的可变控制或音调的变化控制来实现 作为延迟内插器的低通滤波器。

公开(公告)号：US5223656A

公开(公告)日：1993-06-29

申请号：US657516

申请日：1991-02-19

申请人： Iwao Higashi

发明人： Iwao Higashi

IPC分类号： G10H1/043 ,  G10H1/053 ,  G10H5/00 ,  G10H7/00 ,  G10H7/08

CPC分类号： G10H5/007 ,  G10H2250/445 ,  G10H2250/521 ,  Y10S84/09 ,  Y10S84/10

摘要： A musical tone waveform signal forming apparatus comprises a delay loop circuit, a filter circuit a drive signal generation circuit and a modulation control circuit. The drive signal generation circuit inputs a drive signal to the delay loop circuit so that a musical tone is formed in the delay loop circuit. The filter circuit filters the musical tone. The modulation control circuit changes the delay length of the delay loop circuit and the characteristics of the filter circuit thereby adding a modulation effect on the musical tone to be generated.

摘要翻译： 乐音波形信号形成装置包括延迟环路电路，滤波电路，驱动信号发生电路和调制控制电路。 驱动信号发生电路向延迟环路输入驱动信号，使得在延迟环电路中形成乐音。 滤波器电路对音调进行滤波。 调制控制电路改变延迟环电路的延迟长度和滤波器电路的特性，从而对要产生的乐音增加调制效果。

公开(公告)号：US5373098A

公开(公告)日：1994-12-13

申请号：US939669

申请日：1992-09-03

申请人： Toru Kitayama ,  Iwao Higashi

发明人： Toru Kitayama ,  Iwao Higashi

IPC分类号： G10H1/00 ,  G10H1/04 ,  G10H1/043 ,  G10H1/12 ,  G10H7/08

CPC分类号： G10H1/125 ,  G10H1/04 ,  G10H2250/105 ,  Y10S84/09

摘要： A desired sound signal that is input from outside is amplitude-modulated or frequency-modulated with a signal of a predetermined characteristic which is generated from a signal generating source. A frequency characteristic controlling circuit controls the frequency characteristic of the modulated sound signal in accordance with a characteristic of a tone to be generated, and it outputs the controlled signal as a tone signal.

摘要翻译： 从外部输入的所需声音信号由从信号发生源产生的预定特性的信号进行幅度调制或调频。 频率特性控制电路根据要产生的音调的特性来控制调制声音信号的频率特性，并且将受控信号作为音调信号输出。

公开(公告)号：US5426262A

公开(公告)日：1995-06-20

申请号：US920197

申请日：1992-07-23

申请人： Toru Kitayama ,  Iwao Higashi ,  Tomoyuki Funaki

发明人： Toru Kitayama ,  Iwao Higashi ,  Tomoyuki Funaki

IPC分类号： G10H1/00 ,  G06F17/10 ,  G10H1/053 ,  G10H1/16 ,  G10H5/00 ,  G10H7/00 ,  G10H7/08 ,  G10K15/12 ,  G10H1/06

CPC分类号： G10H1/16 ,  G10H5/007 ,  G10H2250/461 ,  G10H2250/535

摘要： An electronic musical instrument: is provided to perform an active control on the pitch of the musical tone to be generated, thereby simulating the pitch-rising phenomenon to be occurred in the performance of a non-electronic musical instrument such as a wind instrument, percussion instrument and stringed instrument. In case of the simulation of the wind instrument, this electronic musical instrument is mainly configured by an excitation-vibration circuit and a tube simulation circuit which are connected together by means of a junction. The tube simulation circuit is configured by a closed-loop circuit in which plural delay circuits and junction circuits are connected together in cascade-connection manner. Herein, the delay circuits simulate the propagation delay of the air-pressure wave to be transmitted through the tube of the wind instrument, while the junction circuits simulate the scattering manner of the air-pressure wave at the points at which the diameter of the tube is changed. The number of the delay stages which are required to simulate the musical sound is controlled to be changed in a lapse of time.

摘要翻译： 提供电子乐器：对要生成的乐音的音调进行主动控制，从而模拟在诸如乐器，敲击乐器等非电子乐器的演奏中发生的音调上升现象 仪器和弦乐器。 在对乐器进行模拟的情况下，该电子乐器主要由激励振动电路和管模拟电路构成，该电路通过接点连接在一起。 管模拟电路由多个延迟电路和结电路以级联方式连接在一起的闭环电路构成。 这里，延迟电路模拟要通过管乐器的管传播的空气压力波的传播延迟，而结电路模拟在管的直径处的空气压力波的散射方式 改变了 模拟音乐声音所需的延迟级的数量被控制在随时间的变化中。

公开(公告)号：US5418320A

公开(公告)日：1995-05-23

申请号：US149047

申请日：1993-11-08

申请人： Iwao Higashi

发明人： Iwao Higashi

IPC分类号： G10H1/00 ,  G10H1/18 ,  G10H1/36 ,  G10H1/42

CPC分类号： G10H1/186 ,  Y10S84/12

摘要： An electronic musical instrument includes a plurality of tone generating substrates, a connection portion, a channel detector and a channel assigner. Each of the plurality of tone generating substrates has at least one tone generation channel which generates a tone signal in response to assignment information input thereto. The connection portion has a plurality of connection slots with which the tone generating substrates are connected. The channel detector detects a number of all the tone generation channels of the tone generating substrates connected with the connection portion. The channel assigner, responsive to performance information input thereto, assigns the performance information as assignment information to one of the tone generation channels detected by the channel detector. The assigned tone generation channel generates a tone signal in accordance with the performance information.

摘要翻译： 电子乐器包括多个乐音产生衬底，连接部分，频道检测器和频道分配器。 多个音调生成基板中的每一个具有响应于输入的分配信息而生成音调信号的至少一个音调生成通道。 连接部分具有连接音调发生基板的多个连接槽。 信道检测器检测与连接部分连接的乐音产生基板的所有乐音产生通道的数量。 频道分配器响应于输入的演奏信息，将演奏信息作为分配信息分配给由频道检测器检测到的乐音产生频道之一。 分配音产生通道根据演奏信息产生音调信号。