发明申请
- 专利标题: Sound reproducing apparatus
- 专利标题(中): 声音再现装置
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申请号: US11432225申请日: 2006-05-11
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公开(公告)号: US20060255993A1公开(公告)日: 2006-11-16
- 发明人: Akira Miki , Masayoshi Sahara
- 申请人: Akira Miki , Masayoshi Sahara
- 申请人地址: JP Hamamatsu-shi
- 专利权人: Yamaha Corporation
- 当前专利权人: Yamaha Corporation
- 当前专利权人地址: JP Hamamatsu-shi
- 优先权: JP2005-138571 20050511
- 主分类号: H03M3/00
- IPC分类号: H03M3/00
摘要:
A sound reproducing apparatus which can be relatively inexpensive as a whole and also be simple in construction with reduced wiring even in the case where many speakers are used. Pulse-width modulated (PWM) pulses are generated based on respective audio signals for multiple-channel speakers. PWM pulses are time-division multiplexed and amplified, and then output as digital driving signals. The multiple-channel speakers are selectively turned on/off such that the digital driving signals are supplied to the respective multiple-channel speakers of corresponding channels.
公开/授权文献
- US07940938B2 Sound reproducing apparatus 公开/授权日:2011-05-10