三: three音信: mail; message; news号: howl; yell三音信号发生器: three-tone signal generator音信号: acoustical signal爆音信号: detonator signal串音信号: crosstalk signal单音, 单音信号: single tone单音信号: tone signal蜂音信号: buzzer signal; buzzerphone; buzzersignal回铃音信号: ringing tone signal忙音信号: audible busy signal; busy tone signal; busy-back声音信号: acoustical signal; audio-signal; sig signal; sound signal声音信号钟: standard specification for gong sound signaling双音信号法: two tone method信号音信道: tch tone channel音信号传输: phonation语音信号: speech signal; voice signal噪音信号: noise signal振铃音信号: ringing tone signal主声音信号: main sound signal初始话音信号: original voice signal单音信号方式: tone signaling第二伴音信号: second sound signal断开声音信号: mute
