| 术语 | background noise |
| 释义 | background noise 背景［本底］噪声;［后部杂讯］ 1.In communications, a continuous low-level noise signal which is received and demodulated with the required signal or is present on a communication circuit. Usually, it is also called white noise. 在通信系统中,一种连续的、低电平的杂乱无章的信号,在接收并解调必需的有用信号的 过程中所产生或存在于通信线路［电路］之中,也经常称之为“白噪音”。 2. In data processing, all extra bits or words that must be ignored or removed from the data atthe time the data is used. 在数据处理技术［过程］中,使用既定数据之前必须从中去掉或忽略不计的所有附加的 比特(位)或字。 3.Loosely, any disturbance tending to interfere with the normal operation of a device or system. 不太严格地讲,任何干扰某一设备或某个系统正常运行的扰动因素。 |
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