| 单词 |
compander |
| 释义 |
compander, n. Telecommunications and Electronics.|kɒmˈpændə(r)|
Also compandor.
[Blend of compressor n. and expander n.]
A device that improves the signal-to-noise ratio of reproduced or transmitted sound by compressing the range of amplitudes of the signal before transmission, and then expanding it on reproduction or reception.
1934Bell Syst. Techn. Jrnl. XIII. 321 The transmitting device is called the compressor; the receiving device, the expandor; and the complete system, the compandor. 1959K. Henney Radio Engin. Handbk. (ed. 5) xxviii. 40 A circuit diagram of one type P carrier-system terminal is shown in fig. 35. It includes..a compandor for each channel which compresses the volume range of the speech after it passes the modulator. 1975Official Gaz. (U.S. Patent Office) 11 Nov. tm178/2 DBX Inc., Waltham, Mass...dbx for companders and parts thereof for recording systems. 1988V. Capel Audio & Hi-Fi Engineer's Pocket Bk. 88 Though seemingly an ideal solution, simple companders suffer from several disadvantages. |
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