... 音频频移键控 audio frequency shift keying 音频电报，声频电报 audio frequency telegraph 音频纯音 audio frequency tone ...
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audio frequency tone shift 转换音频音调
frequency-modulated audio tone 调频音调
frequency shifted audio tone 移频单音频
frequency modulated audio tone 调频音调
interrupted pure-tone audio frequency sweep 中断纯音音频扫频
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A new - style audio remote tripper is presented, which adopts DTMF (Dual Tone Multiple Frequency) technology.
提出了一种新型的、用双音频编码实现的音频远方跳闸装置。
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