| 单词 | crystal microphone |
| 释义 | > as lemmascrystal microphone crystal microphone n. a microphone which depends for its action on the piezoelectric activity of a crystalline substance. ΘΚΠ the world > physical sensation > hearing and noise > audibility > sound magnification or reproduction > [noun] > microphone carbon transmitter1878 microphone1878 carbon microphone1879 pantelephone1881 phonoscope1890 mike1911 condenser microphone1921 magnetophone1922 radio microphone1922 ionophone1924 crystal microphone1925 ribbon microphone1925 radio mike1926 laryngophone1927 velocity microphone1931 ribbon mike1933 pressure microphone1934 bug1936 eight ball1937 ribbon1937 throat microphone1937 throat mike1937 rifle microphone1938 parabolic microphone1939 lip microphone1941 intercept1942 spike mike1950 spy-mike1955 spy-microphone1960 mic1961 rifle mike1961 gun microphone1962 spike microphone1962 shotgun microphone1968 Lavallière1972 wire1973 sneaky1974 multi-mikes1990 1925 Brit. Patent 218,300 1/1 A great advantage of such crystal microphone over the usual carbon microphone is the distortionless rendering of the sound. 2002 J. F. Cox Fund. Linear Electronics (ed. 2) xi. 396 The crystal microphone has a high internal resistance, and if connected to an amplifier with a low input impedance, the signal voltage level..will drop. < as lemmas |
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