| 单词 | audio frequency |
| 释义 | > as lemmasaudio frequency audio frequency n. a frequency between about 20 and 20,000 hertz, which for sound is within the range of audibility; a signal of this frequency; frequently attributive; abbreviated AF. ΘΚΠ society > communication > telecommunication > [noun] > signal > frequency or band of frequencies high frequency1842 low frequency1900 voice frequency1905 audio frequency1913 pulsatance1919 medium frequency1920 side frequency1920 intermediate frequency1924 bass1930 frequency1943 frequency spectrum1955 1913 Proc. IRE 1 102 The audio-frequency produced is equal to the difference in the fundamental oscillation frequencies. 1919 Wireless World Nov. 448 An eight valve amplifier, comprising five stages of high-frequency amplification, one stage of rectification, and two stages of audio-frequency amplification. 1943 Electronic Engin. 16 69 No single curve can be taken as universally representative of the distribution of speech energy throughout the audio frequency band. 1959 R. D. Davies & H. P. Palmer Radio Stud. Universe ix. 174 ‘Whistlers’..are groups of radio waves at audio frequencies (15 kc/s). 1992 RS Components: Electronic & Electr. Products July 942/1 A mixer cavity..mixes the reflected energy with a sample of the oscillator signal to produce a resultant audio frequency output. 2003 Electronics World Jan. 45/1 Electrolytics are highly inductive at audio frequencies. < as lemmas |
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