发明授权
- 专利标题： Audio signal transmission system with noise suppression network
- 专利标题（中）： 具有噪声抑制网络的音频信号传输系统
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申请号： US354517申请日： 1989-05-18
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公开(公告)号： US4954787A公开(公告)日： 1990-09-04
- 发明人: Bruce A. Brisson
- 申请人： Bruce A. Brisson
- 专利权人： Brisson Bruce A
- 当前专利权人： Brisson Bruce A
- 主分类号： H03F1/26
- IPC分类号： H03F1/26
摘要：
In an audio signal transmission system comprising an interface circuit is connected across the output terminals of an audio signal source or across the input terminals of an audio signal transmission cable coupled to the source. The interface circuit comprises either a discrete capacitance or a distributed capacitance in series with a discrete resistor. The value of the capacitance and the resistance in the interface circuit is chosen such that the time constant of the cable with the interface circuit produces in response to noise a signal having a frequency which is above the audio frequency spectrum but within the passband of the amplifier to which it is coupled.
公开/授权文献
- US5530730A Medal counter for counting medals used in game machine 公开/授权日：1996-06-25
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