| 释义 |
vocoder|vəʊˈkəʊdə(r)|
[f. voice n. + code n.1 + -er1.]
Any of various devices or systems for analysing speech or other sounds to obtain information that may be transmitted in a much reduced frequency band and used to reconstruct the sounds or synthesize new ones.
1939H. Dudley in Jrnl. Acoustical Soc. Amer. XI. 169/1 Speech has been remade..by analyzing a talker's speech for the fundamental speech information and then using this information to remake the speech with a synthesizing device... The apparatus used has been called a ‘vocoder’. 1955Sci. Amer. Feb. 95/1 The Vocoder reduces to about one tenth the band width necessary to send speech. 1956Jrnl. Acoustical Soc. Amer. XXVIII. 160/1 In the Scan Vocoder, we scan the envelope of the short time-frequency spectrum, for example, 30 times per second. The scan voltage is then transmitted through only one narrow band frequency channel as an envelope curve. 1970Sci. Jrnl. Mar. 12/4 The main advantage of vocoders is that they require only very low digit rates of the order of 1·2– 2·4 kilobits/second. 1976New Musical Express 12 Feb. 24/5 The song's bridge section follows as a motley collection of barks, yelps and whines are fed through the vocoder, a device which synthesises sounds into eerie echo and resonance. 1980Musicians Only 26 Apr. 13/6 The keys line-up includes..a Korg vocoder.
Hence (as a back-formation) voˈcode v. trans., to transform by means of a vocoder; voˈcoded ppl. a., produced by a vocoder.
1973Lang. & Speech XVI. 293 The fundamental frequency contour of a 700-msec. vocoded utterance..was systematically varied to produce 72 contours. 1976New Musical Express 12 Feb. 24/5 ‘Pigs’ is the strongest slice of straight ahead rock the Floyd have recorded and the vocoded pig gruntings are fittingly hideous. Ibid. 24/6 Waters' voice is again vocoded and emerges sounding unpleasantly cybernetic. 1981R. Brown Megalodon i. 15 An electronic translator that could handle the full range of dolphin whistles and vocode them out as an ersatz humanoid voice. |