公开(公告)号：US5248845A

公开(公告)日：1993-09-28

申请号：US854554

申请日：1992-03-20

申请人： Dana C. Massie ,  David P. Rossum

发明人： Dana C. Massie ,  David P. Rossum

IPC分类号： G10H1/12 ,  G10H5/00

CPC分类号： G10H1/125 ,  G10H5/007 ,  G10H2210/066 ,  G10H2230/181 ,  G10H2230/241 ,  G10H2250/071 ,  G10H2250/075 ,  G10H2250/081 ,  G10H2250/125 ,  G10H2250/235 ,  G10H2250/251 ,  G10H2250/255 ,  G10H2250/445 ,  G10H2250/451 ,  G10H2250/491 ,  G10H2250/581 ,  Y10S84/09 ,  Y10S84/10

摘要： An electronic music system which imitates acoustic instruments addresses the problem wherein the audio spectrum of a a recorded note is entirely shifted in pitch by transposition. The consequence of this is that unnatural formant shifts occur, resulting in the phenomenon known in the industry as "munchkinization." The present invention eliminates munchkinization, thus allowing a substantially wider transposition range for a single recording. Also, the present invention allows even shorter recordings to be used for still further memory improvements. An analysis stage separates and stores the formant and excitation components of sounds from an instrument. On playback, either the formant component or the excitation component may be manipulated.

摘要翻译： 模仿声学仪器的电子音乐系统解决了一个问题，其中所记录的音符的音频频谱通过转置完全偏移。 这样做的结果是发生了不自然的共振变化，导致了业界已知的“混沌”现象。 本发明消除了复合，从而允许单个记录的基本更宽的转置范围。 此外，本发明允许将更短的记录用于进一步的存储器改进。 分析阶段分离和存储来自仪器的声音的共振峰和激发分量。 在播放时，可以操纵共振峰分量或激励分量。

公开(公告)号：US5543580A

公开(公告)日：1996-08-06

申请号：US166592

申请日：1993-12-10

申请人： Hideyuki Masuda

发明人： Hideyuki Masuda

IPC分类号： G10H1/055 ,  G10H5/00 ,  G10H3/12

CPC分类号： G10H5/007 ,  G10H1/055 ,  G10H2220/361 ,  G10H2250/155 ,  G10H2250/255 ,  G10H2250/461 ,  G10H2250/515 ,  G10H2250/535

摘要： A tone synthesizer, for brass instruments, is equipped with a performance information input device such as a mouthpiece having a contact area sensor for detecting the contact area of the lips, a pressure sensor for detecting the push pressure of the lips, and an aperture sensor for detecting the opening surface of the lips. The tone synthesizer is also equipped with an apparatus indicating the strain of the lips, a tone generator, a blow pressure sensor, and a signal transmission apparatus.

摘要翻译： 用于铜管乐器的色调合成器配备有诸如具有用于检测唇部的接触面积的接触区域传感器的口部等的性能信息输入装置，用于检测唇部的推压的压力传感器和孔径传感器 用于检测嘴唇的开口表面。 音调合成器还配备有指示唇部应变的装置，音调发生器，吹气压力传感器和信号传输装置。

公开(公告)号：US5173567A

公开(公告)日：1992-12-22

申请号：US591811

申请日：1990-10-02

申请人： Yoshio Fujita

发明人： Yoshio Fujita

IPC分类号： G10H1/053 ,  G10H1/02 ,  G10H1/057 ,  G10H1/12 ,  G10H1/14 ,  G10H7/02 ,  G10H7/08

CPC分类号： G10H1/125 ,  G10H7/08 ,  G10H2250/095 ,  G10H2250/255 ,  Y10S84/09

摘要： A musical tone generating apparatus is provided for an electronic musical instrument. The apparatus comprises a musical tone signal generating device and a parameter controller. The musical tone signal generating device generates a musical tone signal characterized by a tone parameter whose value is supplied from the parameter controller. The parameter controller comprises a target value generator and an interpolation device, which operate independently. The target value generator generates a target value of the tone parameter to the interpolation device, and the interpolation device interpolates between a present value of the tone parameter and the target value, so that the present value is renewed consecutively. The interpolation device generates an interrupt signal to the target value generator when the present value reaches the target value, so that an operation of the target value generator is interrupted then the target value generator operates to generate a new target value to the interpolation device in response to the interrupt signal. The parameter controller changes a characteristic of the musical tone signal such as a frequency characteristic or amplitude with respect to a lapse of time based on the present value of the tone parameter.

摘要翻译： 为电子乐器提供乐音产生装置。 该装置包括乐音信号产生装置和参数控制器。 乐音信号产生装置产生由参数控制器提供的音调参数表征的乐音信号。 参数控制器包括独立操作的目标值发生器和内插装置。 目标值生成器对内插装置产生色调参数的目标值，并且内插装置在色调参数的当前值和目标值之间内插，使得当前值连续更新。 当当前值达到目标值时，内插装置产生一个到目标值发生器的中断信号，从而目标值发生器的操作被中断，目标值发生器操作以响应于内插装置产生新的目标值 到中断信号。 参数控制器基于音调参数的当前值，相对于经过的时间改变音调信号的特性，例如频率特性或振幅。

公开(公告)号：US4554858A

公开(公告)日：1985-11-26

申请号：US520232

申请日：1983-08-04

申请人： Masatada Wachi ,  Mitsumi Katoh

发明人： Masatada Wachi ,  Mitsumi Katoh

IPC分类号： G10H1/12

CPC分类号： G10H1/125 ,  G10H2250/065 ,  G10H2250/115 ,  G10H2250/121 ,  G10H2250/255 ,  Y10S84/09

摘要： A digital filter imparting a desired tone color to the tone signal is realized by the combination of a digital pole filter and a digital zero filter capable of controlling a pole and a zero in an amplitude-frequency characteristic respectively. The amplitude-frequency characteristic of the digital filter is a composite of the respective characteristics of the pole filter and the zero filter. A "peak" portion and a "valley" portion in this composite characteristic can be set independently by the pole control of the pole filter and the zero control of the zero filter, whereby the desired tone color characteristic can be readily realized. Further, the digital filter may comprise a plurality of digital filters having respective different constructions and a connection switching circuit capable of setting arbitrarily connection between these filters. The filter characteristic as a whole can be diversely altered by changing the connection, whereby diverse tone color characteristics can be realized with ease.

摘要翻译： 通过数字极滤波器和能够分别控制极点和零的数字零滤波器的组合分别实现了对音调信号赋予所需音色的数字滤波器。 数字滤波器的幅频特性是极点滤波器和零滤波器的各自特性的组合。 该复合特性中的“峰值”部分和“谷”部分可以通过极点滤波器的极点控制和零点滤波器的零点控制来独立设置，从而可以容易地实现所需的音色特性。 此外，数字滤波器可以包括具有各自不同结构的多个数字滤波器和能够设置这些滤波器之间的任意连接的连接切换电路。 通过改变连接可以使滤波器特性整体变化，由此可以容易地实现不同的色调特性。

公开(公告)号：US5872727A

公开(公告)日：1999-02-16

申请号：US752014

申请日：1996-11-19

申请人： Chih-Chung Kuo

发明人： Chih-Chung Kuo

IPC分类号： G10H1/12 ,  G10H1/20 ,  G06F17/10 ,  G10H1/06 ,  G10H7/00

CPC分类号： G10H1/20 ,  G10H1/125 ,  G10H2250/071 ,  G10H2250/075 ,  G10H2250/255 ,  G10H2250/601 ,  G10H2250/621 ,  G10H2250/631

摘要： An improved method for shifting the pitches of a tone is disclosed. It comprises: (a) subjecting a digitized original waveform to a whitening process using an all-zero filter (AZF) to obtain a whitened waveform; (b) resampling the whitened waveform at a desired scaling ratio to obtain a scaled and whitened waveform; (c) subjecting the scaled and whitened waveform to a coloring process using an all-pole filter (APF) to obtain a synthesized waveform. In a preferred embodiment, the all-zero filter performs the transformation function of: ##EQU1## and the all-pole filter performs the transformation function of: ##EQU2## wherein the a.sub.i 's and b.sub.i 's are linear predictive coefficients. The whitened waveforms can be compressed and stored as wavetables, which can be subsequently retrieved and decompressed before resampling.

摘要翻译： 公开了一种改变音调音高的方法。 它包括：（a）使用全零滤波器（AZF）对数字化的原始波形进行白化处理以获得白化波形; （b）以期望的比例比对白化的波形进行重采样以获得标度和白化的波形; （c）使用全极滤波器（APF）对经缩放和白化的波形进行着色处理，以获得合成波形。 在一个优选实施例中，全零滤波器执行以下变换函数：＆lt; IMAGE＆gt;全极滤波器执行以下变换函数：＆lt; IMAGE＆gt;其中，ai和bi是线性预测系数。 白化的波形可以压缩并存储为波形图，可以在重新采样之前随后检索和解压缩。

公开(公告)号：US5698807A

公开(公告)日：1997-12-16

申请号：US611014

申请日：1996-03-05

申请人： Dana C. Massie ,  David P. Rossum

发明人： Dana C. Massie ,  David P. Rossum

IPC分类号： G10H1/12 ,  G10H5/00 ,  G01H1/12 ,  G10L9/04 ,  G10L9/14

CPC分类号： G10H1/125 ,  G10H5/007 ,  G10H2210/066 ,  G10H2230/181 ,  G10H2230/241 ,  G10H2250/071 ,  G10H2250/075 ,  G10H2250/081 ,  G10H2250/125 ,  G10H2250/235 ,  G10H2250/251 ,  G10H2250/255 ,  G10H2250/445 ,  G10H2250/451 ,  G10H2250/491 ,  G10H2250/581 ,  Y10S84/09 ,  Y10S84/10

摘要： An electronic music system which imitates acoustic instruments addresses the problem wherein the audio spectrum of a a recorded note is entirely shifted in pitch by transposition. The consequence of this is that unnatural formant shifts occur, resulting in the phenomenon known in the industry as "munchkinization." The present invention eliminates munchkinization, thus allowing a substantially wider transposition range for a single recording. Also, the present invention allows even shorter recordings to be used for still further memory improvements. An analysis stage separates and stores the formant and excitation components of sounds from an instrument. On playback, either the formant component or the excitation component may be manipulated.

摘要翻译： 模拟声学仪器的电子音乐系统解决了一个问题，其中所记录的音符的音频频谱通过转置完全偏移。 这样做的结果是发生了不自然的共振变化，导致了业界已知的“混沌”现象。 本发明消除了复合，从而允许单个记录的基本更宽的转置范围。 此外，本发明允许将更短的记录用于进一步的存储器改进。 分析阶段分离和存储来自仪器的声音的共振峰和激发分量。 在播放时，可以操纵共振峰分量或激励分量。