| 单词 | amplitude modulation |
| 释义 | Word Frequency amplitude modulationnoun 1. one of the principal methods of transmitting audio, visual, or other types of information using radio waves, the relevant signal being superimposed onto a radio-frequency carrier wave. The frequency of the carrier wave remains unchanged but its amplitude is varied in accordance with the amplitude of the input signal Abbreviation: AM, am. Compare frequency modulation 2. a wave that has undergone this process |
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