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1. 发明公开

EP1493144A4 GENERATING PERCUSSIVE SOUNDS IN EMBEDDED DEVICES 有权
标题翻译：在嵌入式设备中创建冲击SOUNDS
公开(公告)号：EP1493144A4
公开(公告)日：2009-11-11
申请号：EP02773862
申请日：2002-10-23
申请人： MOTOROLA INC
发明人： KHAWAND JEAN , FRANGOPOL RADU
IPC分类号： G10H1/12 , G10H1/057 , G10H1/08
CPC分类号： G10H1/12 , G10H2230/305 , G10H2250/121 , G10H2250/475 , Y10S84/09 , Y10S84/12

2. 发明授权

EP0899892B1 Signal processing apparatus and method, and information recording apparatus 有权
标题翻译：信号处理设备和方法以及信息记录装置
公开(公告)号：EP0899892B1
公开(公告)日：2005-02-02
申请号：EP98116365.2
申请日：1998-08-28
申请人： PIONEER ELECTRONIC CORPORATION
发明人： Takenaka, Yoshihiko, c/o Pioneer Electronic Corp. , Imamura, Junichi, c/o Pioneer Electronic Corp.
IPC分类号： H04B1/66 , G11B20/10
CPC分类号： G10L19/18 , G10H2210/036 , G10L19/0212 , G11B20/10527 , G11B2020/10592 , H04B1/665 , Y10S84/09

3. 发明授权

EP0484137B1 Digital filter for a music synthesizer 失效
标题翻译：对于一个音乐合成器数字滤波器
公开(公告)号：EP0484137B1
公开(公告)日：1997-05-21
申请号：EP91310032.7
申请日：1991-10-30
申请人： International Business Machines Corporation
发明人： Lisle, Ronald J. , McDonald, Bradley Scott
IPC分类号： G10H1/12 , G10H1/00
CPC分类号： G10H1/125 , G10H2240/056 , G10H2250/121 , Y10S84/09

4. 发明授权

EP0395041B1 Apparatus for synthesizing musical tones 失效
标题翻译：装置用于合成乐音。
公开(公告)号：EP0395041B1
公开(公告)日：1995-04-12
申请号：EP90107903.8
申请日：1990-04-26
申请人： YAMAHA CORPORATION
发明人： Kunimoto, Toshifumi
IPC分类号： G10H1/00 , G10H1/16
CPC分类号： G10H5/007 , G10H2250/461 , G10H2250/515 , G10H2250/535 , Y10S84/09

5. 发明公开

EP0484137A2 Digital filter for a music synthesizer 失效
标题翻译：数码滤镜füreinen Musiksynthesizer。
公开(公告)号：EP0484137A2
公开(公告)日：1992-05-06
申请号：EP91310032.7
申请日：1991-10-30
申请人： International Business Machines Corporation
发明人： Lisle, Ronald J. , McDonald, Bradley Scott
IPC分类号： G10H1/12 , G10H1/00
CPC分类号： G10H1/125 , G10H2240/056 , G10H2250/121 , Y10S84/09
摘要： A digital filter controlled by a plurality of filter coefficients is preferably coupled to the output of an excitation signal source within a MIDI synthesizer. The excitation signal source is typically controlled by a MIDI data file comprising a sequential series of program control commands and matching note on and note off commands. A plurality of filter coefficient factors are stored in memory and periodically accessed in response to variations in the program control commands and matching note on and note off commands. The selected filter coefficient factors are then utilised to calculate appropriate filter coefficients so that the centre frequency and filter Q of the digital filter may be dynamically and optimally controlled. In a preferred embodiment of the present invention a filter control circuit is also utilised to limit the output of the filter to a maximum level so that output stability is always maintained, independent of the initial conditions and filter coefficients of the filter.
摘要翻译：由多个滤波器系数控制的数字滤波器优选地耦合到MIDI合成器内的激励信号源的输出。激励信号源通常由MIDI数据文件控制，MIDI数据文件包括一系列程序控制命令和匹配注释和注释命令。多个滤波器系数因子被存储在存储器中并且响应于程序控制命令和匹配注释和注释命令的变化而周期性访问。然后利用选择的滤波器系数因子来计算适当的滤波器系数，使得数字滤波器的中心频率和滤波器Q可以被动态和最佳地控制。在本发明的优选实施例中，滤波器控制电路还用于将滤波器的输出限制到最大电平，从而始终保持输出稳定性，而与滤波器的初始条件和滤波器系数无关。

6. 发明公开

EP0393701A2 Musical tone synthesizing apparatus 失效
标题翻译：音乐合成装置
公开(公告)号：EP0393701A2
公开(公告)日：1990-10-24
申请号：EP90107534.1
申请日：1990-04-20
申请人： YAMAHA CORPORATION
发明人： Kunimoto, Toshifumi
IPC分类号： G10H1/00 , G10H1/16
CPC分类号： G10H5/007 , G10H2250/461 , G10H2250/515 , G10H2250/535 , Y10S84/09 , Y10S84/10 , Y10S84/26
摘要： A musical tone synthesizing apparatus which synthesizes a musical tone signal in response to the wind instrument, brass instrument and the like provides an excitation circuit (102) and a resonance circuit (103). The excitation circuit simulates the operations of the reed, mouth-piece and the like, while the resonance circuit which operates as the bi-directional transmission path simulates the resonance tube. The excitation signal generated from the excitation circuit is transmitted through the resonance circuit consisting of delay circuits and junction circuits. Thereafter, the transmitted signal is reflected by the terminal portion, and the reflected signal is transmitted through the resonance circuit and then fed back to the excitation circuit. Thus, the excitation signal is circulated in the loop consisting of the excitation circuit and resonance circuit. Based on the signal picked up from this loop, it is possible to obtain the synthesized musical tone signal which simulates the wind instrument tone and the like.
摘要翻译：响应于管乐器，铜管乐器等合成乐音信号的乐音合成装置提供了激励电路（102）和谐振电路（103）。激励电路模拟簧片，吸嘴等的操作，而作为双向传输路径工作的谐振电路模拟谐振管。由激励电路产生的激励信号通过由延迟电路和结电路组成的谐振电路传输。此后，发送的信号被终端部分反射，并且反射的信号通过谐振电路被发送，然后被反馈到激励电路。因此，激励信号在由激励电路和谐振电路组成的回路中循环。基于从该环路拾取的信号，可以获得模拟管乐器音色等的合成乐音信号。

7. 发明授权

EP0174547B1 Tone signal generation device for an electronic musical instrument 失效
标题翻译：电子乐器的音调信号发生装置
公开(公告)号：EP0174547B1
公开(公告)日：1989-07-19
申请号：EP85110739.1
申请日：1985-08-27
申请人： YAMAHA CORPORATION
发明人： Suzuki, Hideo
IPC分类号： G10H7/00
CPC分类号： G10H7/04 , G10H2250/595 , Y10S84/09 , Y10S84/10

8. 发明公开

EP0198293A3 A musical instrument with a programmed time-changing coefficient digital filter 失效转让
标题翻译：编程时变系数数字滤波器
公开(公告)号：EP0198293A3
公开(公告)日：1989-02-08
申请号：EP86104258.8
申请日：1986-03-27
申请人： AKAI ELECTRIC CO., LTD.
发明人： Kakishita, Masahiro , Katsumoto, Hiroshi
IPC分类号： H03H17/02 , H03H17/04 , G10H5/00
CPC分类号： H03H17/0294 , H03H17/04 , Y10S84/09
摘要： A programmed time-changing coefficient digital filter by which digital signals can be processed in real time, comprising a data RAM (30) for temporarily storing input data, N units of data register (26) to (29) for forming a delay means connected to an output of the data RAM, a coefficient RAM (16) for storing coefficients, 2N units of coefficient register (18) to (25) for temporarily storing the respective coefficients, a coefficient control (17) for replacing contents of the coefficient registers by contents of the coefficient RAM, a multiplier (31) for multiplying delayed data and coefficients read out of the data registers and the coefficient registers respectively, an adder (32) for accumulating data output of the multiplier and the input data, means for replacing the contents of the coefficient registers by the contents of the coefficient RAM depending on signal process, and means for transferring the delayed data between the data registers and data RAM to update the delayed data in the data register, whereby providing a sum of products of the coefficients sequentially read out of the coefficient registers and the delayed data read out of the data registers selected sequentially.

9. 发明公开

EP0178840A3 Tone signal processing device 失效
标题翻译：音频信号处理装置
公开(公告)号：EP0178840A3
公开(公告)日：1987-09-16
申请号：EP85307207
申请日：1985-10-08
申请人： Nippon Gakki Seizo Kabushiki Kaisha
发明人： Katoh, Mitsumi
IPC分类号： G10H01/12
CPC分类号： G10H1/125 , G10H2250/095 , G10H2250/115 , G10H2250/545 , Y10S84/09
摘要： A digital filter (8) is provided between a tone signal generation circuit (1) which supplies a digital tone signal in accordance with a first sampling frequency and a sampling circuit (7) which resamples this digital tone signal in accordance with a second sampling frequency which is lower than the first sampling frequency. This digital filter (8) filters the input digital tone signal with such amplitude-frequency characteristics as to be able to substantially remove an aliasing noise produced due to the second sampling frequency (e.g., with low-pasa filter characteristics having a cut-off frequency which is 1/2 the second sampling frequency). This removes high frequency components producing an aliasing noise from the digital tone signal before it Is applied to the resampling circuit whereby generation of the aliasing noise in resampling is prevented. The resampling is performed for adapting the digital tone signal to an operation clock frequency of an effect imparting circuit (4) provided in a posterior stage for imparting, in digital, a tone effect such as a modulation effect to the digital tone signal.

10. 发明公开

EP0174547A1 Tone signal generation device for an electronic musical instrument 失效
标题翻译：用于电子乐器的音调信号。
公开(公告)号：EP0174547A1
公开(公告)日：1986-03-19
申请号：EP85110739.1
申请日：1985-08-27
申请人： YAMAHA CORPORATION
发明人： Suzuki, Hideo
IPC分类号： G10H7/00
CPC分类号： G10H7/04 , G10H2250/595 , Y10S84/09 , Y10S84/10
摘要： A first waveshape memory (20) stores a full waveshape of a tone from the start to the end of sounding of the tone or a portion thereof in plural periods. A second waveshape memory (21) stores waveshape data of a modification waveshape for the full waveshape or the portion thereof. A tone waveshape signal read out from the first waveshape memory (20) and a modification waveshape signal read out from the second waveshape memory (21) are both multiplied with respective coefficients whereby these waveshape signals are weighted. These weighted waveshape signals are added together to provide a mixed tone signal. By controlling the coefficients, the tone color imparted on the mixed signal is variously determined. The coefficients for the tone color control are provided in accordance with key scaling, key touch or operation states of control knobs. Thus, tone signals having a variety of tone color changes can be realized without the necessity of many wave memories.

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