| 单词 | pcm |
| 释义 | > as lemmasPCM PCM n. Electronics pulse code modulation. ΘΚΠ society > communication > telecommunication > [noun] > signal > modulation choke control1909 modulation1919 frequency modulation1922 pulse modulation1929 phase modulation1930 undermodulation1940 pulse time modulation1944 pulse position modulation1945 PCM1947 pulse amplitude modulation1947 pulse code modulation1947 pulse frequency modulation1950 pulse width modulation1953 pulse duration modulation1956 1947 Bell Syst. Techn. Jrnl. 26 395 This paper describes an experiment in transmitting speech by PCM, or pulse code modulation. 1972 Sci. Amer. Sept. 101/2 The most widely used processes of modulation are amplitude modulation (AM), frequency modulation (FM), pulse amplitude modulation (PAM) and pulse code modulation (PCM). 1990 Sun (Brisbane) 17 Oct. 47/6 Digital, or pulse code modulation (PCM), broadcasts will be immune from static and the constant background noise heard on standard AM and FM bands. pcm pcm n. (esp. of an amount due as rent) per calendar month. ΚΠ 1969 Times 8 July 19/6 Luxury flat, £24 p.c.m. inc. 2002 List (Glasgow & Edinb. Events Guide) 4 July 129/1 Furnished 2 bed flat,..£650 pcm excl CT + bills. < as lemmas |
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