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21. 发明授权

US4178826A Envelope generator 失效
标题翻译：信封发生器
公开(公告)号：US4178826A
公开(公告)日：1979-12-18
申请号：US839912
申请日：1977-10-06
申请人： Teruo Hiyoshi , Akira Nakada , Tsutomu Suzuki , Eiichiro Aoki , Eiichi Yamaga
发明人： Teruo Hiyoshi , Akira Nakada , Tsutomu Suzuki , Eiichiro Aoki , Eiichi Yamaga
IPC分类号： G10G3/04 , G10H1/057 , G10H7/00 , G10H1/02
CPC分类号： G10H1/0575 , G10G3/04
摘要： An envelope generator comprises a counting circuit and counting control means capable of controlling a counting mode of the counting circuit, i.e., operation and non-operation of the counting circuit, counting speed, addition and subtraction etc., in accordance with an envelope shape to be obtained. There are various predetermined counting modes corresponding to different envelope shapes and the envelope generator includes selection means for causing the counting control means to select a desired one of the counting modes.
摘要翻译：包络发生器包括计数电路和计数控制装置，该计数电路能够根据包络形状对包括计数电路的计数模式，即计数电路的操作和不操作，计数速度，加法和减法等进行控制得到。存在对应于不同包络形状的各种预定计数模式，并且包络发生器包括用于使计数控制装置选择所需计数模式的选择装置。

22. 发明授权

US4174650A Envelope generator for an electronics musical instrument 失效
标题翻译：用于电子乐器的信封发生器
公开(公告)号：US4174650A
公开(公告)日：1979-11-20
申请号：US850649
申请日：1977-11-11
申请人： Teruo Hiyoshi , Akira Nakada , Shigeru Yamada , Kiyoshi Ichikawa , Shigeki Ishii
发明人： Teruo Hiyoshi , Akira Nakada , Shigeru Yamada , Kiyoshi Ichikawa , Shigeki Ishii
IPC分类号： G10H1/18 , G10H7/10 , G10H1/00 , G10H1/02 , G10H3/00
CPC分类号： G10H7/105 , G10H1/182
摘要： An envelope generator for use in an electronic instrument generates an envelope waveshape control voltage having separate attack, first decay and second decay sections. The control voltage representing each waveshape section is derived from a separate voltage divider network. The divider networks are connected in series, with separate voltages supplied to the ends and junctions thereof. These supplied voltages correspond to the initial, attack, sustain and final voltage levels of the generated control voltage. The output nodes of the separate divider networks are accessed at different clock rates.A scanning circuit sequentially enables consecutive pairs of gates associated with each divided voltage output node. These gates alternately are connected to separate first and second output lines which provide divided voltages from adjacent gate pairs to opposite ends of an interpolation circuit. This circuit interpolates the provided voltages to derive the envelope waveshape control voltage. As consecutive pairs of gates are enabled, the interpolation circuit reverses the order in which the interpolation is performed.
摘要翻译：用于电子仪器的信封发生器产生具有分离的攻击，第一衰减和第二衰减部分的包络波形控制电压。表示每个波形部分的控制电压从单独的分压器网络导出。分压网络串联连接，分别提供给其端部和接头。这些提供的电压对应于所产生的控制电压的初始，入侵，维持和最终电压电平。单独分频网络的输出节点以不同的时钟速率进行访问。扫描电路顺序地使能与每个分压电压输出节点相关联的连续的门对。这些栅极交替地连接到分离的第一和第二输出线，其提供从相邻栅极对到内插电路的相对端的分压。该电路内插所提供的电压以导出包络波形控制电压。随着连续的门对使能，内插电路反转执行内插的顺序。

23. 发明授权

US4166405A Electronic musical instrument 失效
标题翻译：电子乐器
公开(公告)号：US4166405A
公开(公告)日：1979-09-04
申请号：US909838
申请日：1978-05-26
申请人： Teruo Hiyoshi , Akira Nakada , Shigeru Yamada , Kiyoshi Ichikawa , Sigeki Isii
发明人： Teruo Hiyoshi , Akira Nakada , Shigeru Yamada , Kiyoshi Ichikawa , Sigeki Isii
IPC分类号： G10H1/057 , G10H1/14 , G10H7/06 , G10H1/02
CPC分类号： G10H1/0575 , G10H1/14 , G10H7/06 , G10H2210/181
摘要： An electronic musical instrument is of a type wherein musical tone waveforms are stored in a memory as their sampled amplitudes and sequentially and repetitively read out to constitute tone waveforms. A key depression brings forth key code in a digital representation. This key code is used for reading out frequency information from a frequency information memory. The frequency information is accumulated to make an address signal for reading out the waveform memory.When a key is depressed, a counter starts counting and opens a gate for a predetermined period of time. The gate passes a code representative of an interval of a grace note with respect to the note of the depressed key (i.e. principal note) to an addition and subtraction circuit for addition or subtraction between the key code and the code representative of the interval for the grace note. Accordingly, the key code is modified and the desired grace tone is produced. Upon completion of the operation of the counter, this modification of the key code is stopped and the key code is restored to the original key code resulting in production of the principal tone. In the foregoing manner, a grace tone preceding the principal tone can be played simply by depressing a single key.The counter is also arranged to start the counting operation upon release of the depressed key with a result that a grace tone following the principal tone can be played. Further, ornamentation called "trill" can also be produced by alternately and repetitively opening and closing the gate by means of the output of the counter.
摘要翻译：电子乐器是其中乐音波形作为其采样振幅存储在存储器中并依次重复读出以构成音频波形的类型。一个关键的凹陷在数字表示中提出了关键代码。该键码用于从频率信息存储器读出频率信息。频率信息被累积以产生用于读出波形存储器的地址信号。

24. 发明授权

US4099438A Electronic musical instrument having a touch vibrato effect 失效
标题翻译：具有触摸颤音效果的电子乐器
公开(公告)号：US4099438A
公开(公告)日：1978-07-11
申请号：US723757
申请日：1976-09-16
申请人： Teruo Hiyoshi , Akira Nakada , Shigeru Yamada , Kiyoshi Ichikawa , Sigeki Isii
发明人： Teruo Hiyoshi , Akira Nakada , Shigeru Yamada , Kiyoshi Ichikawa , Sigeki Isii
IPC分类号： G10H1/043 , G10H1/053 , G10H1/055 , G10H1/14 , G10H7/00 , G10H7/06 , G10H1/02 , G10H5/00
CPC分类号： G10H1/14 , G10H1/055 , G10H1/0553 , G10H7/06 , G10H2210/211
摘要： An electronic musical instrument is of a type wherein musical tone waveforms are stored in a memory as their sampled amplitudes and sequentially and repetitively read out to constitute tone waveforms. A key depression brings forth frequency information in a digital representation. The frequency information is accumulated to make an address signal for reading out the waveform memory. When a depressed key is moved laterally, a touch detection circuit produces an analog detection signal representing the amount of displacement of the key. In the meanwhile, a clock pulse is counted by an up-down counter and the counting output is converted by a D-A converter to an analog signal to obtain a triangular wave function signal. When the analog detection signal coincides, in amplitude, with the triangular wave function signal, the digital signal from the up-down counter is sampled and held by a sample and hold circuit. Thus a digital signal representing the key displacement is obtained. This digital signal is multiplied with a frequency information in a multiplier and, accordingly, the musical tone frequency is modulated in response to the lateral movement of the key. Thus, the touch vibrato effect is obtained.
摘要翻译：电子乐器是其中乐音波形作为其采样振幅存储在存储器中并依次重复读出以构成音频波形的类型。一个关键的抑郁症在数字表现中提出频率信息。频率信息被累积以产生用于读出波形存储器的地址信号。当按压键被横向移动时，触摸检测电路产生表示键的位移量的模拟检测信号。同时，通过升降计数器对时钟脉冲进行计数，计数输出由D-A转换器转换为模拟信号，得到三角波函数信号。当模拟检测信号在幅度上与三角波函数信号一致时，来自升降计数器的数字信号由取样和保持电路采样和保持。从而获得表示键位移的数字信号。该数字信号与乘法器中的频率信息相乘，因此，响应于键的横向移动来调制乐音频率。因此，获得触摸颤音效果。

25. 发明授权

US4083283A Electronic musical instrument having legato effect 失效
标题翻译：电子乐器具有legato效果
公开(公告)号：US4083283A
公开(公告)日：1978-04-11
申请号：US723758
申请日：1976-09-16
申请人： Teruo Hiyoshi , Akira Nakada , Shigeru Yamada , Kiyoshi Ichikawa , Sigeki Isii
发明人： Teruo Hiyoshi , Akira Nakada , Shigeru Yamada , Kiyoshi Ichikawa , Sigeki Isii
IPC分类号： G10H1/057 , G10H1/22 , G10H7/00 , G10H1/02
CPC分类号： G10H7/008 , G10H1/22 , G10H2210/095
摘要： An electronic musical instrument is of a type wherein an envelope to be imparted to a musical tone is stored in a memory as its sampled values and sequentially read out to constitute an envelope shape. A key depression causes the read-out of the memory.The instrument is improved to provide a rich sound effect of legato performance by successively and smoothly shifting the tone of the former key to that of the latter key while maintaining a predetermined constant tone volume. This legato effect can be carried out by successively maintaining the sustain level of the musical tone envelope from the tone of the former key shifted to the latter key. The musical tone envelope is read from the envelope memory by an address which is shifted by a clock pulse. After the key has been depressed, the address continues to be shifted by the clock pulse until it has reached a predetermined value, whereupon the supply of the clock pulse is prohibited to cause the envelope memory to produce a sustain level corresponding to the address. Thereafter, this address is held to maintain the sustain level of tones of subsequently depressed keys regardless of whether the initially depressed key ash been released or not, or whether the subsequently depressed keys are being depressed or have been released. An embodiment in which the legato effect is produced with respect to a pedal keyboard is described.
摘要翻译：一种电子乐器是一种类型，其中要赋予乐音的包络作为其采样值存储在存储器中，并且顺序地读出以构成包络形状。一个关键的按键导致读取内存。

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