公开(公告)号：US5094136A

公开(公告)日：1992-03-10

申请号：US460502

申请日：1990-01-03

申请人： Masaki Kudo ,  Tokio Ogi ,  Tsutomu Yanase ,  Tetsuji Ichiki

发明人： Masaki Kudo ,  Tokio Ogi ,  Tsutomu Yanase ,  Tetsuji Ichiki

IPC分类号： G10H1/08 ,  G10H7/00

CPC分类号： G10H7/008 ,  G10H1/08 ,  G10H2250/035

摘要： Two tone generators having different tone generation systems, e.g., PCM type and FM type, are provided. There are tone generation modes designating combination of tone generation in these tone generators and one can be selected from among them. There are, for example, a simple mixing mode, a delay mode in which start of tone generation in one tone generator is delayed from that in the other and a crossfade mode in which a tone signal is generated first in one tone generator and tone generation is switched to the other tone generator and envelope levels of output tone signals of the two tone generators are crossfaded during a switching period. Delay time in the delay mode and switching time in the crossfade mode can be variably controlled in accordance with a key scaling and/or other factors. A tone may be generated at a sampling frequency synchronized with a pitch in one tone generator and at a sampling frequency which is not synchronized with the pitch in the other tone generator. A phase of one cycle may be divided into plural sections and a complex waveform can be generated by converting the phase address signal in accordance with a function peculiar to each phase section and accessing a waveform memory with the converted address signal.

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。

公开(公告)号：US5625158A

公开(公告)日：1997-04-29

申请号：US360208

申请日：1994-12-20

申请人： Tetsuji Ichiki

发明人： Tetsuji Ichiki

IPC分类号： G10H1/02 ,  G10H1/18 ,  G10H7/00 ,  G10H7/02 ,  G10H7/08

CPC分类号： G10H1/187 ,  G10H7/006 ,  G10H7/02 ,  G10H7/08 ,  G10H2250/161 ,  G10H2250/601 ,  G10H2250/621

摘要： A musical tone generating apparatus has an waveform memory which stores original waveform data. One or two tone generating chips are be able to fixed on a print circuit board as elements of the musical tone generating apparatus. Each tone generating chip, provided on the print circuit board, sequentially generates waveform data of a plurality of musical tones at sampling periods having a predetermined length under time division control. Each tone generating chip sequentially carries out tone generating operations to generate the waveform data based on the original waveform data during time division channels which are obtained by dividing each one of the sampling periods when the musical tone generating section is used for tone generation. In the case where one tone generating chip is employed on the print circuit board, N samples of the original waveform data are read out from the waveform memory during each one of the time division channels to be used by the tone generating chip. In the case where two tone generating chips are employed on the print circuit board, the number of the original waveform data read out from the waveform memory for each tone generating chip during each time division channel is decreased from N to M which is less than N.

摘要翻译： 乐音产生装置具有存储原始波形数据的波形存储器。 一个或两个音调生成芯片能够固定在作为乐音产生装置的元件的打印电路板上。 设置在打印电路板上的每个音调生成芯片在时分控制下以具有预定长度的采样周期顺序地产生多个乐音的波形数据。 每个乐音产生芯片依次执行乐音产生操作，以便在通过将乐音产生部分用于音调产生时将采样周期中的每一个获得的时分信道中的原始波形数据生成波形数据。 在印刷电路板上使用一个音调生成芯片的情况下，在由音调生成芯片使用的每个时分信道中，从波形存储器中读出原始波形数据的N个样本。 在印刷电路板上使用两个音调生成芯片的情况下，在每个时分信道期间从每个音调生成芯片的波形存储器读出的原始波形数据的数目从N减小到小于N的M 。

公开(公告)号：US5416264A

公开(公告)日：1995-05-16

申请号：US97163

申请日：1993-07-23

申请人： Hiroyuki Toda ,  Tetsuji Ichiki

发明人： Hiroyuki Toda ,  Tetsuji Ichiki

IPC分类号： G10H7/06 ,  G10H1/057 ,  G10H7/04

CPC分类号： G10H7/06 ,  G10H2250/545

摘要： A waveform-forming device has a waveform memory storing a plurality of blocks of waveform samples representative of a waveform of a musical tone. Each block is formed of at least one non-compressed waveform sample and a plurality of compressed waveform samples. A pitch of a musical tone to formed is taken in. The waveform samples are read out block by block from the waveform memory, based on the pitch taken in. The compressed waveform samples contained in each block are converted into non-compressed waveform samples. The waveform of the musical tone is formed from the at least one non-compressed waveform sample of each block and the non-compressed waveform samples obtained by the conversion.

摘要翻译： 波形形成装置具有存储表示乐音波形的多个波形样本块的波形存储器。 每个块由至少一个非压缩波形样本和多个压缩波形样本形成。 将形成的音调的间距取决于波形存储器中的波形采样中的波形，每个块中包含的压缩波形样本被转换为非压缩波形样本。 乐音的波形由每个块的至少一个非压缩波形样本和通过转换获得的非压缩波形样本形成。

公开(公告)号：US4785703A

公开(公告)日：1988-11-22

申请号：US29605

申请日：1987-03-24

申请人： Tetsuji Ichiki

发明人： Tetsuji Ichiki

IPC分类号： G10H1/00 ,  G10H1/26 ,  G10H1/36 ,  G10H1/42 ,  G10H7/00 ,  G10F1/00

CPC分类号： G10H1/42 ,  Y10S84/12

摘要： An automatic accompaniment apparatus includes an accompaniment pattern generation unit for generating a plurality of accompaniment patterns which represent timing of generation of a plurality of accompaniment tones to be generated respectively. The accompaniment patterns correspond to accompaniment tones. The apparatus also includes a tone input unit for inputting the accompaniment tones to be generated and for changing the accompaniment tones into a plurality of tone date respectively, a first memory, second memory having a plurality of storage locations corresponding to the accompaniment patterns respectively, a writing unit for writing sequentially the tone data in the first memory and for writing a plurality of area information identifying respectively storage areas of the first memory in which the tone data are stored, into corresponding ones of the storage locations, and a reading out unit for reading out the area information from the storage locations corresponding to the accompaniment patterns and for reading out the tone data from the storage area identified by the area information read out. The accompaniment tones can be produced in accordance with the tone data read out.

摘要翻译： 一种自动伴奏装置，包括伴奏图案生成单元，用于生成分别表示要生成的多个伴奏音的定时的多个伴奏模式。 伴奏模式对应于伴奏音。 该装置还包括一个音调输入单元，用于输入要产生的伴奏音和用于分别将伴奏音调变成多个音调日期;第一存储器，第二存储器，分别具有对应于伴奏模式的多个存储位置; 写入单元，用于顺序地写入第一存储器中的色调数据，并将用于识别分别存储有音调数据的第一存储器的存储区域的多个区域信息写入相应的存储位置;以及读出单元， 从与伴奏图案相对应的存储位置读出区域信息，并从由读出的区域信息识别的存储区域中读出音调数据。 可以根据读出的音调数据产生伴奏音。

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：US5949011A

公开(公告)日：1999-09-07

申请号：US222394

申请日：1998-12-29

申请人： Tetsuji Ichiki

发明人： Tetsuji Ichiki

IPC分类号： G10H1/02 ,  G06F13/16 ,  G06F13/36 ,  G10H7/00 ,  G10H7/02

CPC分类号： G10H7/002 ,  G10H7/004 ,  G10H2240/311

摘要： A tone generator chip is formed of a semiconductor substrate and is configurable under different operation modes in combination with memories accessible via external buses for generating a tone by using the memories. In the tone generator chip, a sound source block is controllable for generating a tone and includes a reading circuit for reading waveform data to generate the tone and a digital signal processing circuit for processing the waveform data to impart an effect to the tone. A central processing unit is integrated in the semiconductor substrate together with the sound source block for controlling the sound source block. A first access manager manages an access status from each of the reading circuit, the digital signal processing circuit and the central processing unit to a first external bus for access to a memory. A second access manager manages an access status from each of the reading circuit, the digital signal processing circuit and the central processing unit to a second external bus provided separately from the first external bus for access to another memory. A mode control designates a specific one of the different operation modes to enable the first access manager and the second access manager to set the respective access statuses, thereby configuring the reading circuit, the digital signal processing circuit and the central processing unit according to the specific operation mode in combination with the memories configured corresponding to the specific operation mode.

摘要翻译： 音调发生器芯片由半导体衬底形成，并且可配置在不同的操作模式下，与通过外部总线可访问的存储器组合，以通过使用存储器产生音调。 在音调发生器芯片中，声源块可控制以产生音调，并且包括用于读取波形数据以产生音调的读取电路和用于处理波形数据以对音调产生影响的数字信号处理电路。 中央处理单元与用于控制声源块的声源块一起集成在半导体衬底中。 第一访问管理器管理来自读取电路，数字信号处理电路和中央处理单元的访问状态到用于访问存储器的第一外部总线。 第二访问管理器管理从每个读取电路，数字信号处理电路和中央处理单元的访问状态到与第一外部总线分开设置的第二外部总线，用于访问另一个存储器。 模式控制指定不同操作模式中的特定一种，以使得第一访问管理器和第二访问管理器能够设置各自的访问状态，从而根据具体的方式配置读取电路，数字信号处理电路和中央处理单元 操作模式与对应于特定操作模式配置的存储器组合。