| 单词 | pulse amplitude modulation |
| 释义 | > as lemmaspulse amplitude modulation pulse amplitude modulation n. Telecommunications a form of pulse modulation in which variations in the signal amplitude are represented by variations in the amplitude of the pulses; abbreviated PAM. 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. 26 396 When the pulses consist simply of short samples of the speech waves, their varying amplitudes directly represent the speech waves and the system is called pulse amplitude modulation or PAM. 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). 2004 Pacific Sci. (Nexis) 1 Apr. 325 Rapid light curves were obtained for all algal thalli using a pulse amplitude modulation fluorometer to estimate photosynthetic efficiency. < as lemmas |
| 随便看 |
|
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。