公开(公告)号：USRE40364E1

公开(公告)日：2008-06-10

申请号：US10805489

申请日：2004-03-19

申请人： Kazuhisa Okamura ,  Tetsuji Ichiki

发明人： Kazuhisa Okamura ,  Tetsuji Ichiki

IPC分类号： G10H7/00

CPC分类号： G10H7/002 ,  G10H2210/215 ,  G10H2210/251 ,  G10H2210/281 ,  G10H2230/041 ,  G10H2240/311

摘要： A music apparatus is constructed for processing a music tone signal in response to a clock signal at each sampling period. In the music apparatus, a clock generator generates the clock signal. A signal processor is operable in synchronization to the clock signal for time-divisionally processing a plurality of music tone signals through a plurality of channels within one sampling period. A clock controller is operative during a supply duration allocated within one sampling period for supplying the clock signal to the signal processor from the clock generator to thereby operate the signal processor, and is operative during other than the supply duration within one sampling period for stopping the supplying of the clock signal to the signal processor to thereby suspend the signal processor.

摘要翻译： 构成音乐装置，以响应每个采样周期的时钟信号来处理音乐音调信号。 在音乐装置中，时钟发生器产生时钟信号。 信号处理器可与时钟信号同步操作，以在一个采样周期内通过多个通道对多个音乐信号进行时分处理。 时钟控制器在一个采样周期内分配的供电持续时间期间工作，以将时钟信号从时钟发生器提供给信号处理器，从而操作信号处理器，并且在一个采样周期内的供电持续时间之内可操作以停止 将时钟信号提供给信号处理器，从而暂停信号处理器。

公开(公告)号：US5256831A

公开(公告)日：1993-10-26

申请号：US727548

申请日：1991-07-09

申请人： Koichi Kozuki ,  Kazuhisa Okamura ,  Tetsuji Ichiki

发明人： Koichi Kozuki ,  Kazuhisa Okamura ,  Tetsuji Ichiki

IPC分类号： G10H1/057

CPC分类号： G10H1/0575

摘要： An envelope waveform generation apparatus comprises an envelope waveform signal generator for forming an envelope waveform signal, a specific position setting member for setting a specific position, a position comparator and a key OFF controller. When a key OFF event is detected, the position comparator compares a position and/or level on the envelope waveform with those of the specific position, and the key OFF controller decays the level of the envelope waveform signal in the shape of a predetermined key OFF waveform, or delays key OFF processing by the envelope waveform signal generator on the basis of the comparison result.

摘要翻译： 包络波形发生装置包括用于形成包络波形信号的包络波形信号发生器，用于设定特定位置的特定位置设定部件，位置比较器和键OFF控制器。 当检测到关闭OFF事件时，位置比较器将包络波形上的位置和/或电平与特定位置的位置和/或电平进行比较，并且按键OFF控制器以预定键OFF的形状衰减包络波形信号的电平 根据比较结果，通过包络波形信号发生器对波形进行波形或延迟键OFF处理。

公开(公告)号：US5252773A

公开(公告)日：1993-10-12

申请号：US755040

申请日：1991-09-04

申请人： Koichi Kozuki ,  Tetsuji Ichiki ,  Kazuhisa Okamura

发明人： Koichi Kozuki ,  Tetsuji Ichiki ,  Kazuhisa Okamura

IPC分类号： G10H7/00 ,  G10H1/12 ,  G10H7/02 ,  G10H7/08

CPC分类号： G10H7/08 ,  G10H1/125 ,  G10H7/02 ,  G10H2250/145 ,  G10H2250/161 ,  G10H2250/545 ,  G10H2250/591 ,  G10H2250/595 ,  G10H2250/621 ,  Y10S84/09

摘要： There are provided a waveform generating section for generating waveform sample data at a frequency corresponding a designated pitch, a coefficient generating section for generating n coefficients that correspond to a desired interpolation characteristic, a characteristic-controlling section for changing the coefficients to be generated in the coefficient generating section so as to variably control the interpolation characteristic, and an interpolation operation section for operating the coefficients with n digital waveform sample data generated sequentially from the waveform generating section and synthesizing operated data to produce one sample data. With this arrangement, it becomes possible to control the interpolation characteristic and therefore a resultant filter characteristic in accordance with a desired mode, when generating a tone signal of a smooth waveform by waveform interpolation operation utilizing digital filter operation. For example, the interpolation characteristic can be controlled in accordance with a pitch or tone range so that a filter characteristic to be obtained as the result of the interpolation operation can be prevented from shifting as a pitch or tone range changes. Further, by controlling the interpolation characteristic in correspondence with a specific tone range, such characteristic can be established as to reliably eliminate an aliasing noise.

公开(公告)号：US06770806B2

公开(公告)日：2004-08-03

申请号：US10022745

申请日：2001-12-12

申请人： Kazuhisa Okamura ,  Tetsuji Ichiki

发明人： Kazuhisa Okamura ,  Tetsuji Ichiki

IPC分类号： A63H500

CPC分类号： G10H7/002 ,  G10H2210/215 ,  G10H2210/251 ,  G10H2210/281 ,  G10H2230/041 ,  G10H2240/311

摘要： A music apparatus is constructed for processing a music tone signal in response to a clock signal at each sampling period. In the music apparatus, a clock generator generates the clock signal. A signal processor is operable in synchronization to the clock signal for time-divisionally processing a plurality of music tone signals through a plurality of channels within one sampling period. A clock controller is operative during a supply duration allocated within one sampling period for supplying the clock signal to the signal processor from the clock generator to thereby operate the signal processor, and is operative during other than the supply duration within one sampling period for stopping the supplying of the clock signal to the signal processor to thereby suspend the signal processor.

摘要翻译： 构成音乐装置，以响应每个采样周期的时钟信号来处理音乐音调信号。 在音乐装置中，时钟发生器产生时钟信号。 信号处理器可与时钟信号同步操作，以在一个采样周期内通过多个通道对多个音乐信号进行时分处理。 时钟控制器在一个采样周期内分配的供电持续时间期间工作，以将时钟信号从时钟发生器提供给信号处理器，从而操作信号处理器，并且在一个采样周期内的供电持续时间之内可操作以停止 将时钟信号提供给信号处理器，从而暂停信号处理器。

公开(公告)号：US06359206B2

公开(公告)日：2002-03-19

申请号：US09809816

申请日：2001-03-16

申请人： Kazuhisa Okamura ,  Tetsuji Ichiki

发明人： Kazuhisa Okamura ,  Tetsuji Ichiki

IPC分类号： G10H700

CPC分类号： G10H7/002 ,  G10H2210/215 ,  G10H2210/251 ,  G10H2210/281 ,  G10H2230/041 ,  G10H2240/311

摘要： A music apparatus is constructed for processing a music tone signal in response to a clock signal at each sampling period. In the music apparatus, a clock generator generates the clock signal. A signal processor is operable in synchronization to the clock signal for time-divisionally processing a plurality of music tone signals through a plurality of channels within one sampling period. A clock controller is operative during a supply duration allocated within one sampling period for supplying the clock signal to the signal processor from the clock generator to thereby operate the signal processor, and is operative during other than the supply duration within one sampling period for stopping the supplying of the clock signal to the signal processor to thereby suspend the signal processor.

公开(公告)号：US5229535A

公开(公告)日：1993-07-20

申请号：US842048

申请日：1992-02-26

申请人： Koichi Kozuki ,  Tetsuji Ichiki ,  Kazuhisa Okamura

发明人： Koichi Kozuki ,  Tetsuji Ichiki ,  Kazuhisa Okamura

IPC分类号： G10H1/053 ,  G10H1/057 ,  G10H1/12

CPC分类号： G10H1/125 ,  G10H1/057 ,  G10H2250/115 ,  G10H2250/121 ,  Y10S84/09

摘要： A musical tone generating apparatus generates musical tones based on a signal outputted from a sound source and an envelope generator. The signal outputted from the sound source is processed by a digital filter in accordance with filter information responsive to a key-on signal. Filter information generating circuit generates delay time information corresponding to the time period which the digital filter needs to process and output an inputted data. The envelope is imparted to the signal outputted from the sound source with a delay from a key-on timing which corresponds to the delay time information to realize precise envelope rise portions.

摘要翻译： 乐音产生装置基于从声源和包络发生器输出的信号产生乐音。 从声源输出的信号由数字滤波器根据响应于开机信号的滤波器信息进行处理。 滤波器信息生成电路生成与数字滤波器需要处理的时间段对应的延迟时间信息，并输出输入的数据。 从对应于延迟时间信息的按键定时延迟，从声源输出信号，以实现精确的包络上升部分。

公开(公告)号：US5422431A

公开(公告)日：1995-06-06

申请号：US022331

申请日：1993-02-24

申请人： Tetsuji Ichiki

发明人： Tetsuji Ichiki

IPC分类号： G10H1/057 ,  G10H1/18

CPC分类号： G10H1/057

摘要： An electronic musical tone synthesizing apparatus includes a damper pedal and an envelope generator. The envelope generator imparts an envelope to a musical tone to be produced. When the termination of the musical tone is designated, the envelope generator imparts a decaying envelope thereto. If the damper pedal is depressed during the processing of the decaying envelope, the decaying rate becomes slower. This leads to the performance of sustaining effects such as in an acoustic piano.

摘要翻译： 一种电子乐音合成装置，包括制音踏板和信封发生器。 信封发生器给出要产生的音调的信封。 当指定乐音的终止时，信封发生器向其施加衰减的信封。 在衰减包络线的处理期间，如果减震踏板被压下，则衰减速率变慢。 这导致了诸如在原声钢琴中的维持效果的表现。

公开(公告)号：US5498835A

公开(公告)日：1996-03-12

申请号：US28843

申请日：1993-03-10

申请人： Tetsuji Ichiki

发明人： Tetsuji Ichiki

IPC分类号： G10H1/00 ,  G10H1/02 ,  G10H1/12 ,  G10K15/12 ,  H04S1/00 ,  G10H7/00

CPC分类号： G10H1/125 ,  G10H1/0091 ,  G10K15/12 ,  G10H2210/281 ,  G10H2210/305 ,  Y10S84/26

摘要： A designating mechanism generates filtering designation data, which designate the contents of filtering, reverberating designation data, which designate the contents of reverberation, and characteristics data, which express the combined contents of filtering and reverberation. A parameters generating mechanism generates filtering parameters expressing filtering characteristics, and generates reverberating parameters expressing reverberation characteristics. A readout device reads out a first operating algorithm, which designates filtering designation data, and a second operating algorithm, which designates reverberating designation data, from a memory mechanism wherein a plurality of operating algorithms are stored. A computing mechanism creates a digital filter having characteristics corresponding to filtering parameters, based on the first operating algorithm, creates an operating unit having reverberation characteristics corresponding to reverberating parameters, based on the second operating algorithm, operates this digital filter and this operating unit in a time shared manner, and processes filtering and reverberation in parallel.

摘要翻译： 指定机制产生过滤指定数据，指定滤波内容，混响指定数据，指定混响内容，特征数据，表示滤波和混响的组合内容。 参数生成机制生成表示滤波特性的滤波参数，并产生表示混响特性的混响参数。 读出装置从存储多个操作算法的存储机构读出指定滤波指定数据的第一操作算法和指定混响指定数据的第二操作算法。 计算机构基于第一操作算法创建具有与过滤参数对应的特征的数字滤波器，基于第二操作算法创建具有与混响参数对应的混响特性的操作单元，将该数字滤波器和该操作单元操作在 时间共享的方式，并且并行处理过滤和混响。

公开(公告)号：US4696214A

公开(公告)日：1987-09-29

申请号：US917909

申请日：1986-10-10

申请人： Tetsuji Ichiki

发明人： Tetsuji Ichiki

IPC分类号： G10H1/18 ,  G10H1/00 ,  G10H5/00 ,  G10H7/00 ,  G10H7/02

CPC分类号： G10H5/005 ,  G10H7/02

摘要： An electronic musical instrument of the sampling type is provided. The electronic musical instrument comprises a memory having a plurality of storage areas, and operates in one of full sampling, part sampling, full play and part play modes. Sampling data of waveform of a tone are stored into addresses of all the storage areas in the full sampling mode, and are stored into addresses of one of the storage areas in the part sampling mode. Thus, only one waveform is sampled and stored in the full sampling mode, whereas a plurality of waveforms can be sampled and stored in the part sampling mode. In the full play mode, the whole sampling data are read from the storage areas to form a tone, so that the tone can have a complicated waveform if the sampling data have been stored in the memory in the part sampling mode. In the part play mode, the sampling data are read from the corresponding storage area, so that the tone can be formed from a portion of a waveform if the waveform has been stored in the full sampling mode.

摘要翻译： 提供了采样类型的电子乐器。 电子乐器包括具有多个存储区域的存储器，并且以全采样，部分采样，全播和部分播放模式之一进行操作。 音调波形的采样数据被存储在全采样模式的所有存储区域的地址中，并且被存储在部分采样模式中的一个存储区域的地址中。 因此，只有一个波形被采样并存储在全采样模式，而多个波形可以采样和存储在部分采样模式。 在完全播放模式下，从存储区域读取整个采样数据以形成一个音调，如果采样数据已经以部分采样模式存储在存储器中，则该音调可以具有复杂的波形。 在部分播放模式中，从对应的存储区域读取采样数据，如果波形已经以全采样模式存储，则可以从波形的一部分形成色调。

公开(公告)号：US5892170A

公开(公告)日：1999-04-06

申请号：US882123

申请日：1997-06-25

申请人： Tetsuji Ichiki ,  Masahiro Shimizu

发明人： Tetsuji Ichiki ,  Masahiro Shimizu

IPC分类号： G10H7/02 ,  G10H7/00 ,  G10H7/06 ,  G10H7/04 ,  G10H7/12

CPC分类号： G10H7/002 ,  G10H7/06 ,  G10H2240/241 ,  G10H2240/275 ,  G10H2240/291 ,  G10H2240/305 ,  G10H2240/311 ,  G10H2250/621

摘要： A musical tone generation apparatus creates musical-tone-waveform samples based on waveform samples stored in a waveform memory by each sampling period. Herein, a high-speed bus such as a PCI bus is provided for data transfer with regard to the waveform memory. A waveform buffer is provided to temporarily and selectively store the waveform samples which are read from the waveform memory. A sound source operates in accordance with time-division-channel timings which are provided by dividing a sampling period by a number of channels. The sound source performs interpolation calculations on the waveform samples of the waveform buffer to create a musical-tone-waveform sample in accordance with each time-division-channel timing with respect to each channel. The apparatus generates a read address whose value is changed in response to a pitch of a musical tone. When the waveform buffer does not store the waveform samples which are necessary to create the musical-tone-waveform sample, the apparatus accesses the waveform memory in accordance with the read address to read out the waveform samples, which are then transferred to the waveform buffer via the high-speed bus. Herein, burst reading operations are performed on the waveform memory, regardless of the time-division-channel timing. Thus, it is possible to reduce an occupancy time of the high-speed bus by the sound source as well as a number of times to access the waveform memory.

摘要翻译： 乐音产生装置根据每个采样周期内存储在波形存储器中的波形样本，创建乐音波形采样。 这里，提供诸如PCI总线的高速总线用于关于波形存储器的数据传输。 提供了一个波形缓冲器来暂时和选择性地存储从波形存储器读取的波形样本。 声源根据通过将采样周期除以多个通道而提供的时分频道定时来操作。 声源对波形缓冲器的波形样本执行插值计算，以根据每个信道的每个时分信道定时创建乐曲波形样本。 该装置产生响应于乐音的音高改变其值的读地址。 当波形缓冲器不存储创建乐曲波形采样所需的波形样本时，设备根据读取地址访问波形存储器，以读出波形样本，然后传送到波形缓冲器 通过高速公交车。 这里，无论时分通道定时如何，在波形存储器上进行突发读取操作。 因此，可以通过声源减少高速总线的占用时间以及访问波形存储器的次数。