因此，只有3个时隙能实际用于话音信号。

Therefore, only three slots were truly available for voice signal use.

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话音信号是一个模拟信号，通过采样、量化和编码，我们可以实现话音信号的数字传输。

The speech signal is a analog one, and we can perform its digital transmission by sampling, quantizing and coding.

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ADSL话音分离器在ADSL宽带网线路中起到分离低频话音信号和高频数据信号的作用。

ADSL splitters take a role of separating low-frequency audio signals from high-frequency signals.

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