发明授权
- 专利标题: Musical tone forming device by FM technology
- 专利标题(中): 音乐成型装置采用FM技术
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申请号: US81541申请日: 1979-10-03
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公开(公告)号: US4253367A公开(公告)日: 1981-03-03
- 发明人: Teruo Hiyoshi , Akira Nakada , Shigeru Yamada
- 申请人: Teruo Hiyoshi , Akira Nakada , Shigeru Yamada
- 申请人地址: JPX Hamamatsu
- 专利权人: Nippon Gakki Seizo Kabushiki Kaisha
- 当前专利权人: Nippon Gakki Seizo Kabushiki Kaisha
- 当前专利权人地址: JPX Hamamatsu
- 优先权: JPX53-123774 19781006
- 主分类号: G10H7/08
- IPC分类号: G10H7/08 ; G10H7/10 ; G10H1/08 ; G10H5/00
摘要:
A musical tone forming device comprises circuit system of digital calculation realizing frequency modulation technology in three different modes. In the first mode a plurality of frequency modulated waveforms are individually calculated in response to key depression and resultant data is added together to provide a musical tone signal, in the second mode, a signal waveform having a frequency corresponding to a depressed key is frequency-modulated with a plurality of signal waveforms, and in the third mode a signal waveform of a frequency corresponding to a depressed key is frequency-modulated in a multiple manner with a plurality of signal waveforms. Throughout these systems, the same component parts are commonly used and tone signals of the respective systems can be produced by a simple switching operation.
公开/授权文献
- USD402737S Outdoor shower 公开/授权日:1998-12-15