| 单词 | paperless office |
| 释义 | paperless office PCM-encoding of the analog signal, with the sampling performed by the same chips as contained in the A-to-D converter. However, variations on PAM remain widely used. Quadrature amplitude modulation (QAM) is such a variation. See also amplitude, channel bank, DS-1, modulation, PCM, and QAM. |
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