公开(公告)号：US20100222906A1

公开(公告)日：2010-09-02

申请号：US12544141

申请日：2009-08-19

申请人： Chris Moulios

发明人： Chris Moulios

IPC分类号： G06F17/00

CPC分类号： G10H1/40 ,  G10H7/008 ,  G10H2210/076 ,  G10H2210/391 ,  G10H2230/031 ,  G10H2240/325

摘要： Exemplary embodiments of methods and apparatuses to correlate changes in one audio signal to another audio signal are described. A first audio signal is outputted. A second audio signal is received. The second audio signal may be stored in a memory buffer. The first audio signal is correlated to conform to the second audio signal. The first audio signal may be dynamically correlated to match with the second audio signal while the second audio signal is received. At least in some embodiments, a size of a musical time unit of the second audio signal is determined to correlate the first audio signal. At least in some embodiments, the adjusted first audio signal is stored in another memory buffer.

摘要翻译： 描述了将一个音频信号的变化与另一个音频信号相关联的方法和装置的示例性实施例。 输出第一音频信号。 接收第二音频信号。 第二音频信号可以存储在存储器缓冲器中。 第一音频信号被相关联以符合第二音频信号。 当接收到第二音频信号时，第一音频信号可以被动态地相关联以与第二音频信号匹配。 至少在一些实施例中，确定第二音频信号的音乐时间单位的大小以使第一音频信号相关。 至少在一些实施例中，调整后的第一音频信号被存储在另一存储器缓冲器中。

公开(公告)号：US20030050781A1

公开(公告)日：2003-03-13

申请号：US10241679

申请日：2002-09-11

申请人： Yamaha Corporation

发明人： Motoichi Tamura ,  Yasuyuki Umeyama

IPC分类号： G10L013/06

CPC分类号： G10H7/02 ,  G10H1/08 ,  G10H7/008 ,  G10H2240/145 ,  G10H2240/325 ,  G10H2250/035 ,  G10H2250/571

摘要： A plurality of blocks of waveform data are stored in a memory, which also stores, for each of the blocks, synchronizing information representative of a plurality of cycle synchronizing points that are indicative of periodic specific phase positions where the block of waveform data should be synchronized in phase with another block of waveform data. Two blocks of waveform data (e.g., harmonic and nonharmonic components) are read out from the memory, along with the synchronizing information. On the basis of the synchronizing information, the readout of two blocks of waveform data is controlled using the synchronizing information. There is stored, for each of the blocks, at least one piece of synchronizing position information indicative of a specific position where the block should be synchronized with another block, and the readout of the individual blocks of waveform data is controlled so that the blocks are synchronized with each other using the synchronizing position information.

公开(公告)号：US06365817B1

公开(公告)日：2002-04-02

申请号：US09671026

申请日：2000-09-26

申请人： Hideo Suzuki ,  Hideyuki Masuda

发明人： Hideo Suzuki ,  Hideyuki Masuda

IPC分类号： G10H700

CPC分类号： G10H7/02 ,  G10H7/008 ,  G10H2210/095 ,  G10H2240/131 ,  G10H2250/581

摘要： Set of sample identification information and representative-point designating data is generated in accordance with performance data or the like, and sample data is obtained by referring to a database in accordance with the generated sample identification information. If necessary, the thus-obtained sample data is adjusted or modified on the basis of the representative-point designating data. Characteristic of the sample data can be controlled appropriately and efficiently by the representative-point designating data specifying representative sample points for which sample data adjustment is to be performed. For example, particular sample data that is located at a given representative sample point designated by the representative-point designating data is adjusted in accordance with adjustment information, and other sample data that is located at another sample point is adjusted simultaneously with such adjustment at the representative sample point.

摘要翻译： 根据性能数据等生成样本识别信息和代表点指定数据的集合，并且根据生成的样本识别信息参考数据库获得样本数据。 如果需要，根据代表点指定数据来调整或修改如此获得的采样数据。 可以通过指定要对其进行采样数据调整的代表性采样点的代表点指定数据来适当和有效地控制采样数据的特性。 例如，根据调整信息来调整位于由代表点指定数据指定的给定代表采样点的特定采样数据，并且同时调整位于另一采样点的其他样本数据，同时进行这样的调整 代表性采样点。

公开(公告)号：US06314403B1

公开(公告)日：2001-11-06

申请号：US09568758

申请日：2000-05-11

申请人： Mark R. Jeffery

发明人： Mark R. Jeffery

IPC分类号： G10L2100

CPC分类号： G10H7/008 ,  G10H2250/035 ,  G10L21/00

摘要： The present invention provides a method and apparatus for generating at a computerized workstation a special effect that is derived by numerical processing of the digital sample values associated with an analog signal. The analog signal is partitioned into wavefragments which are crossfaded at both a micro and macro level to generate the effect.

摘要翻译： 本发明提供了一种用于在计算机工作站产生通过数字处理与模拟信号相关联的数字样本值而导出的特殊效果的方法和装置。 模拟信号被划分为在微观和宏观两个级别都交叉淡化以产生效果的波片。

公开(公告)号：US06169240A

公开(公告)日：2001-01-02

申请号：US09014417

申请日：1998-01-27

申请人： Hideo Suzuki

发明人： Hideo Suzuki

IPC分类号： G10H700

CPC分类号： G10H7/02 ,  G10H7/008

摘要： A pitch of a tone to be generated is designated, and simultaneously control information to be used for time-axis stretch/compression control is generated. Discrete locations of waveform data to be read out from memory are designated with the time axis of the waveform data controlled to be stretched or compressed in accordance with the control information, and part of the waveform data at the designated locations are read out at a rate corresponding to the designated pitch. For example, virtual read addresses corresponding to the control information and actual read addresses corresponding to the designated pitch are generated, and the actual read addresses are controlled, at the individual discrete locations, to follow the virtual addresses. Thus, the rate at which the waveform data are read out from the memory is variably controlled to generate a desired pitch, during which time the waveform memory can be optionally controlled to be stretched or compressed along the time axis independently of the readout rate or pitch control. By applying the time-axis stretch/compression control to various performance styles, real-time control, modulation control or tone-generating-time control, it is possible to significantly enhance expression and controllability of the generated tone.

摘要翻译： 指定要生成的音调的间距，并且同时产生用于时间轴拉伸/压缩控制的控制信息。 从存储器中读出的波形数据的离散位置是根据控制信息被控制为被拉伸或压缩的波形数据的时间轴指定的，并且以指定位置的一部分读出指定位置处的波形数据的一部分 对应于指定音高。 例如，生成与控制信息对应的虚拟读取地址和对应于指定间距的实际读取地址，并且在各个离散位置处控制实际的读取地址以跟随虚拟地址。 因此，波形数据从存储器读出的速率被可变地控制以产生期望的音调，在此期间，波形存储器可以可选地被控制沿时间轴被拉伸或压缩，而与读出速率或音调无关 控制。 通过将时间轴拉伸/压缩控制应用于各种演奏风格，实时控制，调制控制或音调生成时间控制，可以显着增强生成音色的表达和可控性。

公开(公告)号：US5647005A

公开(公告)日：1997-07-08

申请号：US494277

申请日：1995-06-23

申请人： Yen-Hui Wang ,  Der-Chwan Wu

发明人： Yen-Hui Wang ,  Der-Chwan Wu

IPC分类号： G10H1/20 ,  G10H7/00 ,  H04R3/00 ,  H03G3/00

CPC分类号： H04R3/00 ,  G10H1/20 ,  G10H7/008

摘要： A method is disclosed of modification of parameters of audio signals by dividing a digital signal converted from an original analog signal into sound frames, modifying a pitch and a playing rate of the digital signal within a frame and subsequent successive splicing a last modified frame with a first non-modified frame and calculating a differential mean absolute error to define the best splicing point in terms of producing minimal or no audible noise such that various sections of sound signals can be spliced together to achieve pitch and playing rate modification. An apparatus is also disclosed for implementing the method, the apparatus comprising input and output amplifiers, a low pass filter at the input and a low pass filter at the output, analog-to-digital and digital-to-analog converters, and a pitch shifting processor.

摘要翻译： 公开了一种通过将从原始模拟信号转换成的数字信号分成声音帧来修改音频信号的参数的方法，修改帧内的数字信号的音调和播放速率，并且随后使用 第一非修改帧并计算差分平均绝对误差，以便在产生最小或不可听见的噪声方面定义最佳拼接点，使得声音信号的各个部分可以拼接在一起以实现音调和播放速率修改。 还公开了一种用于实现该方法的装置，该装置包括输入和输出放大器，输入端的低通滤波器和输出模数转换器和数/模转换器之间的低通滤波器，以及间距 移位处理器

公开(公告)号：US5216189A

公开(公告)日：1993-06-01

申请号：US443660

申请日：1989-11-29

申请人： Mitsumi Kato

发明人： Mitsumi Kato

IPC分类号： G10H1/02 ,  G10H1/057 ,  G10H7/00 ,  G10H7/02

CPC分类号： G10H7/02 ,  G10H1/02 ,  G10H1/057 ,  G10H7/008 ,  G10H2210/221

摘要： An electronic musical instrument effects the slur on several continuous notes when the slur is selected. The slur performance is detected based on performance information which is generated when performing the keyboard. Then, states of musical tones to be generated are varied from the first note to the last note in the slurred notes in accordance with a line or a curve corresponding to the predetermined musical factor to be detected. Preferably, this musical factor may be the tone color, key-depression intensity, pitch difference between the first note and last note in the slurred notes. Further, it is possible to select desirable one of the preset lines or curves whose data are stored in a memory.

摘要翻译： 当选择sl时，电子乐器会对几个连续音符造成诽谤。 基于在执行键盘时产生的性能信息来检测诽谤性能。 然后，根据与要检测的预定乐曲相对应的线或曲线，要生成的乐音的状态从在第一音符到最后音符中变化。 优选地，该音乐因素可以是音调颜色，按键抑制强度，在模糊音符中的第一音符和最后音符之间的音调差。 此外，可以选择其数据存储在存储器中的预设线或曲线中的期望的一个。

公开(公告)号：US5131042A

公开(公告)日：1992-07-14

申请号：US496640

申请日：1990-03-21

申请人： Mikio Oda

发明人： Mikio Oda

IPC分类号： G10K15/04 ,  G10H1/20 ,  G10H7/00 ,  G10L21/04 ,  G11B20/02

CPC分类号： G10H1/20 ,  G10H7/008 ,  G10H2250/631

摘要： A music tone pitch shift apparatus which converts an original audio signal into digital data by way of pulse code modulation (PCM), shifting the pitch, and converting the pitch shifted digital data into an analog signal. The PCM digital data is stored in a ring memory at a given sampling speed, and is read out of the memory by a pair of identical read circuits at a common read addressing speed corresponding to the desired pitch. One of the read circuits starts reading from the opposite address location to the other on the ring memory. Since the read addressing speed is set faster than the write addressing speed when increasing the pitch, and vice versa, overtaking or lapping between the addresses could occur. In switching alternately the read circuits from a now-outputting side to a switching-to side, the read address on the switching-to side circuit is stopped increasing at an address location where a zero-amplitude data has been read, until a zero-amplitude data in phase with that which the switching-to side circuit has read is read by the now-outputting side circuit and the switching is made, immediately before the overtaking or lapping occurs on the now-outputting side circuit. Thus, a smooth connection of the pitch shifted audio signals can be made without including such amplitude modulated components as in the cross fade method, and therefore, a high-quality music tone pitch shift operation can be realized.

公开(公告)号：US4991218A

公开(公告)日：1991-02-05

申请号：US398238

申请日：1989-08-24

申请人： Gregory Kramer

发明人： Gregory Kramer

IPC分类号： G10H1/00 ,  G10H1/16 ,  G10H5/00 ,  G10H7/00 ,  G10H7/02

CPC分类号： G10H1/0091 ,  G10H1/16 ,  G10H5/005 ,  G10H7/008 ,  G10H7/02 ,  G10H2210/281 ,  G10H2250/191

摘要： A digital audio signal processing technique in which the harmonic content of the output signal varies with the amplitude of an input signal. The preferred embodiment includes an analog to digital converter with sample and hold, a digital signal memory with playback control apparatus, timing circuits, a RAM look-up table to perform non-linear transformation and finally a digital to analog converter. The input signal, which can be an arbitrary audio signal or a digital signal representative of such a signal, is modified by a non-linear transformation means and outputted for reproduction in audible form or stored for subsequent processing.

摘要翻译： 一种数字音频信号处理技术，其中输出信号的谐波含量随着输入信号的幅度而变化。 优选实施例包括具有采样和保持的模数转换器，具有回放控制装置的数字信号存储器，定时电路，用于执行非线性变换的RAM查找表，以及最后一个数模转换器。 作为代表这种信号的任意音频信号或数字信号的输入信号由非线性变换装置修改，并以可听形式输出或存储用于后续处理。

公开(公告)号：US4909120A

公开(公告)日：1990-03-20

申请号：US239190

申请日：1988-08-31

申请人： Masamichi Horiki ,  Tsutomu Saito

发明人： Masamichi Horiki ,  Tsutomu Saito

IPC分类号： G10H1/057 ,  G10H1/18 ,  G10H7/00

CPC分类号： G10H1/181 ,  G10H7/008

摘要： Truncate processing is performed so that a new tone is not generated before the envelope waveform is finished but the new tone is produced after the volume of the previous tone is sufficiently diminished, by which the new tone can be produced with a satisfactory feeling of attack. Further, the envelope waveform is not abruptly interrupted and cleared in a moment but is decayed at a constant and high speed, thereby preventing the generation of noise such as a click. Moreover, demanded speed data is provided for each tone, by which it is possible to produce repective tones not at a demanded speed like the least common multiple but at an optimum speed for each tone and to make the previous tone generation proceed to the next tone generation without producing noise such as a click.

摘要翻译： 执行截断处理，使得在包络波形完成之前不产生新的音调，但是在前一音调的音量被充分减小之后产生新的音调，由此可以以令人满意的感觉来产生新的音调。 此外，包络波形不会突然中断并暂时清除，而是以恒定和高速衰减，从而防止诸如咔嗒声等噪声​​的产生。 此外，为每个音调提供要求的速度数据，通过该速度数据可以产生不按照最小公倍数的要求速度，但是对于每个音调以最佳速度产生视听音，并且使先前音调生成进行到下一个音调 不产生噪音，如点击。