A frequency of oscillation capable of being perceived by the human ear, generally between 20 and 20,000 Hz.
- Such a signal resides in the audio frequency band.
- Now, the station's six o'clock newscast can be heard in Spanish Monday through Friday on a separate audio frequency on newer TVs and VCRs.
- Spectrogram analyses of the audio frequency of the imitations were nearly perfect matches to the original sounds.
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Line breaks: audio fre|quency
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