英语词汇“pre-emphasis”的意思、释义、用法解释及翻译-双龙斋书画网

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词汇	pre-emphasis
释义	Definition of pre-emphasis in English: pre-emphasis noun priːˈɛmfəsɪs Sound Recording A systematic distortion applied to an audio or video signal prior to transmission or recording, usually in order to improve signal-to-noise ratio, involving an increase in the relative strength of certain frequencies in anticipation of a corresponding decrease (de-emphasis) made during reception or playback. Origin 1940s; earliest use found in RCA Review. From pre- + emphasis. Definition of pre-emphasis in US English: pre-emphasis nounpriːˈɛmfəsɪs Sound Recording A systematic distortion applied to an audio or video signal prior to transmission or recording, usually in order to improve signal-to-noise ratio, involving an increase in the relative strength of certain frequencies in anticipation of a corresponding decrease (de-emphasis) made during reception or playback. Origin 1940s; earliest use found in RCA Review. From pre- + emphasis.
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