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单词 volume indicator
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volume indicator
volume indicator n. Electronics a device for measuring the power of a complex electrical signal corresponding to a sound pattern, so as to indicate the volume of the sound that is represented.
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the world > matter > physics > science of sound > [noun] > instrument for measuring volume
volume indicator1923
VU meter1940
1923 Trans. Amer. Inst. Electr. Engineers 42 77/2 There has been developed a device which is called a ‘volume indicator’. This consists of an amplifier detector working into a direct-current meter.
1961 G. Millerson Technique Television Production i. 16 His [sc. the sound mixer's] attention is divided mostly between the flickering needle of his volume indicator and his picture monitor.
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