Glossary entry (derived from question below)
English term or phrase:
compander
Chinese translation:
壓縮擴展器
May 15, 2009 20:54
15 yrs ago
English term
compander
GBK
English to Chinese
Tech/Engineering
Telecom(munications)
Definition from
Maxim Integrated Products, Dallas Semic.:
Signal processing technique which uses both compression and expansion to improve dynamic range and signal-to-noise ratio.
A signal is passed through a non-linear transformation prior to transmission. A reverse of this transformation occurs at reception. The transformation is such that quiet portions are boosted and loud portions reduced. Noise is reduced because the quiet signals are louder, compared to the noise in the transmission channel.
Used in digital, PCM, transmissions as well as analog applications. Dolby is a common example of a compander-based noise reduction system.
Example sentences:
This compander covers a frequency domain from 20Hz to 20KHz, the total distortions are below 1% and the signal/noise ratio is 80dB. (electroschematics.com)
Unlike traditional companders that have increasing amounts of signal distortion as the frequency becomes lower, the Syfx compander has no signal distortion at any frequency. (syfx)
We tested transmissions with two companders (DSKs) on 40 meter SSB using three ham radios to compare co-channel interference and signal quality. The third radio was used for creating an interference signal. The compander definitely helped to lessen the co-channel interference from this interfering signal transmitting at the same signal strength. (people.wallawalla.edu)
Proposed translations
(Chinese)
| 5 +2 | 壓縮擴展器 |
GeoGenesis
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Change log
May 15, 2009 13:44: changed "Kudoz queue" from "In queue" to "Public"
May 15, 2009 20:54: changed "Stage" from "Preparation" to "Submission"
May 18, 2009 20:54: changed "Stage" from "Submission" to "Completion"
Proposed translations
+2
27 mins
Selected
壓縮擴展器
Definition from
Company homepage:
压缩扩展器（压缩器/扩展器噪音衰减）<br /><br />压缩器是作为压缩扩展器电路的一部分，作为整体噪音抑制过程的一部分，通过接收机中的接收镜像进行反向扩展过程加以实现。输入限幅器在发射机输入端，紧跟着的是压缩器。<br /><br />在称作“压缩扩展器”的信号处理电路的帮助下，无线话筒系统可以察觉的信噪比得到了极大的提高。术语“压缩扩展器”是 “压缩器”和“扩展器”的合成词
Example sentences:
內建電子壓縮擴展器，在發射之前壓縮語音，在接收方擴展語音信號， 改善信噪比，從而提供清晰的語音。 (Company homepage)
4 KudoZ points awarded for this answer.
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