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公开(公告)号：US20170372711A1
公开(公告)日：2017-12-28
申请号：US15698626
申请日：2017-09-07
申请人： Yamaha Corporation
发明人： Taro SHIRAHAMA
IPC分类号： G10L19/008 , G10H1/08 , G10L13/02 , G10H7/04 , G10L13/06
CPC分类号： G10L19/008 , G10H1/08 , G10H7/04 , G10L13/02 , G10L13/06 , G10L2013/021
摘要： A sample counter in each channel performs counting operation at a given rate. Independently for each channel, the rate and an initial value for the counter are set, and start and stop of the counting operation of the counter are controlled, so that a partial portion of an original waveform corresponding to a count range from the set initial value to a count stop point is reproduced in the channel. A control section sets the initial values in individual ones of a set of channels, selected from among the channels, such that sample values at different sample positions of the original waveform are simultaneously retrieved in individual ones of the set of channels, and controls an overlap adder to add up the retrieved sample values, so that sample values of an audio waveform signal with a plurality of partial portions of the original waveform, partially overlapping each other are output.
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公开(公告)号：US20060086239A1
公开(公告)日：2006-04-27
申请号：US11259601
申请日：2005-10-25
IPC分类号： G10H7/00
CPC分类号： G10H1/0066 , G10H7/04 , G10H2240/091 , G10H2250/501 , G10H2250/641
摘要： Apparatus and method for reproducing a MIDI file are provided. In the apparatus and the method, notes and note reproduction times are extracted from the MIDI file and a difference between a start point and an end point in a Loop section of relevant sound source data according to the note reproduction time is detected and stored. The above stored difference between the start point and end point of the sound source data which will be reproduced is compensated and outputted, so that sound quality distortion in the Loop section is eliminated or reduced.
摘要翻译： 提供了用于再现MIDI文件的装置和方法。 在该装置和方法中，从MIDI文件中提取音符和音符再现时间，并且检测并存储根据音符再现时间的相关声源数据的循环部分中的起始点和终点之间的差异。 上述存储的将被再现的声源数据的起始点和终点之间的差异被补偿和输出，从而消除或减少环路部分中的声音质量失真。
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公开(公告)号：US5890126A
公开(公告)日：1999-03-30
申请号：US815318
申请日：1997-03-10
申请人： Eric Lindemann
发明人： Eric Lindemann
IPC分类号： G10L7/06
CPC分类号： G10L21/003 , G10H7/04
摘要： Apparatus for simultaneously decompressing and interpolating compressed audio data. The compressed audio data is stored in differential log format, meaning that the difference between each two consecutive data points is taken and the log of the difference calculated to form each compressed data point. To efficiently decompress and interpolate the compressed data, advantage is taken of the fact that addition of logs is equivalent to multiplication of linear values. Thus the log of an interpolation factor is added to each compressed data point prior to taking the inverse log of the sum. An integrator block completes the interpolation and decompression of the data.
摘要翻译： 用于同时解压缩和内插压缩音频数据的装置。 压缩音频数据以差分日志格式存储，这意味着采用每两个连续数据点之间的差异，并计算差异日志以形成每个压缩数据点。 为了有效地解压缩和内插压缩数据，优点在于添加日志等价于线性值的乘法。 因此，在获取总和的逆对数之前，将内插因子的对数添加到每个压缩数据点。 积分器块完成数据的插值和解压缩。
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公开(公告)号：USRE35813E
公开(公告)日：1998-06-02
申请号：US671357
申请日：1991-03-19
申请人： Satoshi Usa , Hideo Suzuki
发明人： Satoshi Usa , Hideo Suzuki
CPC分类号： G10H7/008 , G10H1/0091 , G10H1/053 , G10H7/04 , G10H2210/271 , G10H2250/035 , Y10S84/09
摘要： A circuit for adding a resonance tone to a tone signal to be generated is provided. When a damper operator is not operated, the resonance tone is not added but an ordinary tone signal is generated. When the damper operator has been operated, the resonance tone is added so that a tone signal including the resonance tone is generated. An effect of a damper operator, i.e., loud pedal, in a piano, a natural musical instrument, is thereby simulated with high fidelity. The resonance tone may be produced by passing an ordinary tone signal through a filter. Alternatively, data obtained by sampling an actually produced tone of a piano, a natural musical instrument, when a damper operator, i.e., loud pedal, is ON may be stored in a memory and a resonance tone may be generated by reading out the stored data from the memory. The signal of the generated resonance tone may be sounded by itself or after mixing with an ordinary tone signal at a suitable mixing ratio. In addition to the imparting of the resonance tone, a known control for switching of a decay rate of a tone volume envelope may be performed.
摘要翻译： 提供了一种用于将共振音调添加到要产生的音调信号的电路。 当不操作阻尼器操作器时，不会增加共鸣音，而是产生普通的音调信号。 当减振器操作器被操作时，共振音调相加，从而产生包括共鸣音的音调信号。 因此，以高保真度模拟钢琴，自然乐器中的减震器操作者，即大踏板的效果。 可以通过使普通音调信号通过滤波器来产生共振音调。 或者，通过对实际产生的钢琴音调，自然乐器，当减震器操作者，即踩踏踏板开启时获得的数据可以存储在存储器中，并且可以通过读出存储的数据来产生共鸣音 从记忆。 产生的共振色调的信号可以自身发声，或者以适当的混合比与普通音调信号混合。 除了赋予共振音外，还可以执行用于切换音量包络的衰减速率的已知控制。
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公开(公告)号：US5637821A
公开(公告)日：1997-06-10
申请号：US597353
申请日：1996-02-06
申请人： Gen Izumisawa , Yutaka Washiyama
发明人： Gen Izumisawa , Yutaka Washiyama
CPC分类号： G10H7/04 , G10H7/08 , G10H2250/621
摘要： A musical sound generating device has a waveform memory to store musical sound waveform data to be read-out repeatedly between a loop-top address (integral address) and a loop-end address (integral address). The same musical sound waveform data is stored at the loop-top address and the loop-end address. An address computing circuit computes a read-out address, including a decimal part, to repeatedly read out the musical sound waveform data stored between the loop-top address and the loop-end address in the waveform memory. An interpolating circuit carries out interpolation if the read-out address generated by the address computing circuit includes a decimal part. Interpolation is carried out by dividing in proportion the musical sound waveform data read out from the waveform memory using an integral part of the read-out address and the musical sound waveform data read out from the waveform memory using a value obtained by adding 1 to the integral part of the read-out address according to the decimal part.
摘要翻译： 音乐声音产生装置具有波形存储器，用于在循环顶部地址（积分地址）和循环结束地址（积分地址）之间重复地存储要读出的音乐声音波形数据。 相同的音乐声波形数据存储在环回地址和循环结束地址。 地址计算电路计算包括小数部分的读出地址，以重复地读出存储在波形存储器中的循环顶部地址和循环结束地址之间的音乐声音波形数据。 如果由地址计算电路产生的读出地址包括小数部分，则内插电路执行插值。 通过使用从波形存储器读出的整体部分和从波形存储器读出的音乐声音波形数据，将从波形存储器读出的音乐声音波形数据与比例相加，从而将比例加1 根据小数部分，读出地址的组成部分。
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公开(公告)号：US5426260A
公开(公告)日：1995-06-20
申请号：US897153
申请日：1992-06-11
申请人： Yoshiyuki Terashima , Masami Katsui
发明人： Yoshiyuki Terashima , Masami Katsui
摘要： A device for reading sound waveform data has a waveform ROM for storing waveform data represented as an amplitude in a time series. Sound waveform data is repeatedly read from the waveform ROM. The reading of a single waveform corresponds to a single period. A scale ROM stores a plurality of frequency dividing ratios. A programmable counter divides a signal having a predetermined frequency in correspondence with a frequency dividing ratio output by the scale ROM and outputing a clock pulse. A counter counts the clock pulses and indicates the addresses of the waveform ROM. The scale ROM changes the frequency dividing ratio data during an arbitrary divided period of intervals in the period for reading the waveform data. During the period for reading the waveform by the counters, the sound waveform read out has a single frequency and accordingly a single period. The waveform reading period is divided into m number of intervals. A particular kth divided period interval between 0 and m is adjusted to a longer or shorter interval than the remaining m-1 period intervals to allow fine adjustment of an average period improving overall period resolution capabilities.
摘要翻译： 用于读取声音波形数据的装置具有用于存储表示为时间序列中的振幅的波形数据的波形ROM。 从波形ROM重复读取声音波形数据。 单个波形的读数对应于一个周期。 比例ROM存储多个分频比。 可编程计数器根据比例ROM输出的分频比分配具有预定频率的信号并输出时钟脉冲。 计数器对时钟脉冲进行计数，并指示波形ROM的地址。 刻度ROM在用于读取波形数据的周期内的任意间隔周期内改变分频比数据。 在通过计数器读取波形的期间，读出的声音波形具有单个频率，因此具有单个周期。 波形读取周期分为m个间隔。 将0和m之间的特定第k个分割周期间隔调整到比剩余的m-1周期间隔更长或更短的间隔，以允许精细调整平均周期以改善整个周期分辨能力。
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公开(公告)号：US5250748A
公开(公告)日：1993-10-05
申请号：US395199
申请日：1989-08-14
申请人： Hideo Suzuki
发明人： Hideo Suzuki
CPC分类号： G10H1/125 , G10H7/04 , G10H2250/115 , G10H2250/121 , G10H2250/145 , G10H2250/545 , Y10S84/09
摘要： An address signal generation circuit generates an address signal which changes at a rate corresponding to tone pitch of a tone to be generated. This address signal consists of an integer section and a decimal section. A tone waveshape data generation circuit generates tone waveshape sampled data in response to the integer section of the address signal. A filter coefficient supply circuit can generate data corresponding to filter coefficients of m orders and selects and supplies n filter coefficients (where n
摘要翻译： 地址信号生成电路生成以与要产生的色调的音调相对应的速率变化的地址信号。 该地址信号由整数部分和小数部分组成。 音频波形数据产生电路响应于地址信号的整数部分产生音调波形采样数据。 滤波器系数提供电路可以产生与m阶的滤波器系数对应的数据，并响应于地址信号的小数部分选择并提供n个滤波器系数（其中n
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公开(公告)号：US5136916A
公开(公告)日：1992-08-11
申请号：US670698
申请日：1991-03-18
申请人： Takeo Shibukawa
发明人： Takeo Shibukawa
摘要： An electroic musical instrument of the present invention is provided with a damper control as well as tone generation instructin device and tone generation device. While the damper control is operated, the tone generation device continues tone generation even if the stop thereof is instructed by the tone generation instruction device. Moreover there is provided pitch control device adapted to change the pitch of the tone currently generated while the damper control is operated.Accordingly, when the damper control is operated, the resulting musical tones can be enhanced in their variety, distinct from normal tone generation. This allows an electronic musical instrument, for example, to generate such sounds as when the damper pedal is stamped with a piano.
摘要翻译： 本发明的电动乐器具有风门控制以及音调生成指示装置和乐音发生装置。 当风门控制被操作时，即使音调发生指令装置指示停止，音调产生装置也继续发音。 此外，还设置有俯仰控制装置，其适于在减震器控制操作时改变当前产生的音调的音调。 因此，当减震器控制被操作时，可以增强所产生的音乐的音调，不同于普通乐曲的产生。 这允许电子乐器例如产生这样的声音，就像当制音踏板被钢琴冲压时。
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公开(公告)号：US5127302A
公开(公告)日：1992-07-07
申请号：US652240
申请日：1991-02-05
申请人： Yoshiyuki Terashima , Masami Katsui
发明人： Yoshiyuki Terashima , Masami Katsui
摘要： A device for reading sound waveform data has a waveform ROM for storing waveform data represented as an amplitude in a time series. Sound waveform data is repeatedly read from the waveform ROM. The reading of a single waveform corresponds to a single period. A scale ROM stores a plurality of frequency dividing ratios. A programmable counter divides a signal having a predetermined frequency in correspondence with a frequency dividing ratio output by the scale ROM and outputing a clock pulse. A counter counts the clock pulses and indicates the addresses of the waveform ROM. The scale ROM changes the frequency dividing ratio data during an arbitrary divided period of intervals in the period for reading the waveform data. During the period for reading the waveform by the counters, the sound waveform readout has a single frequency and accordingly a single period. The waveform reading period is devided into m number of intervals. A particular kth divided period interval between 0 and m is adjusted to a longer or shorter interval than the remaining m-1 period intervals to allow fine adjustment of an average period improving overall period resolution capabilities.
摘要翻译： 用于读取声音波形数据的装置具有用于存储表示为时间序列中的振幅的波形数据的波形ROM。 从波形ROM重复读取声音波形数据。 单个波形的读数对应于一个周期。 比例ROM存储多个分频比。 可编程计数器根据比例ROM输出的分频比分配具有预定频率的信号并输出时钟脉冲。 计数器对时钟脉冲进行计数，并指示波形ROM的地址。 刻度ROM在用于读取波形数据的周期内的任意间隔周期内改变分频比数据。 在通过计数器读取波形的期间，声音波形读出具有单个频率，因此具有单个周期。 波形读取周期分为m个间隔。 将0和m之间的特定第k个分割周期间隔调整到比剩余的m-1周期间隔更长或更短的间隔，以允许精细调整平均周期以改善整个周期分辨能力。
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公开(公告)号：US5086685A
公开(公告)日：1992-02-11
申请号：US492245
申请日：1990-03-09
摘要： The position of a connecting portion between waveforms can be arbitrarily set when a plurality of waveform data is obtained by changing pitch widths of stored external sound waveform data, when a read rate of the waveform data is increased or decreased and the readout waveform data is synthesized, or when the waveform is changed from one waveform to another waveform. In addition, a plurality of loop reproduction cycles can be arbitrarily set when the waveform data is to be read out. In loop reproduction, two items of waveform data having different phases between the preset start and end addresses can be repeatedly read out and synthesized, and their mixing ratios can be changed as a function of time, thereby performing loop reproduction so as not to abruptly change amplitude values of the waveforms.
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