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Time sharing conference circuit for digital system - selects subscriber having loudest signal by adjusting sampled speech comparator threshold after series of frames
Time sharing conference circuit for digital system - selects subscriber having loudest signal by adjusting sampled speech comparator threshold after series of frames
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机译:用于数字系统的分时会议电路-通过在一系列帧后调整采样的语音比较器阈值来选择信号最大的用户
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摘要
Address information detailing which receiving and transmitting channels are being used for a conference is stored in RAM's. The speech is sampled in PCM format from each subscriber and is passed via a channel counter and multiplexed to a reception memory. This data is then transmitted from the memory to a comparator which selects the subscriber having the loudest signal. A latch circuit retains the current loudest signal and a timing circuit allows it to be retained for a given time period. A logic control circuit provides control signals when another subcrriber comparator circuit produces an output signalling the channel having the loudest signal. This process is repeated for each frame of information.
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