當我部手提電話擺係個電腦喇叭既隔離既時候..
係有電話or sms打/sd入黎[之前]..
個喇叭會有滴滴滴...既聲 1,2秒度 滴完之後我部電話就顯示有來電or sms啦
呢個應該可以用物理解釋到嘛?@@
會唔會同電磁有關呢.(我只係估下)
呢個係咩現象?
2009-01-05 3:30 am
回答 (3)
2009-01-05 5:58 am
✔ 最佳答案
It is interference of electromagnetic signal.When there is incoming/outgoing call, the mobile phone will emit strong 900MHz RF signal. Closer to the mobile phone stronger the signal.
In the PC speaker, there is a amplifier circuit which amplify audio signal (small voltage ac signal) and drive the speaker units.
The RF signal can easily jam into amplifier circuit.
Good quality speaker doesn't has such problem.
2010-01-06 7:08 am
may the frequency of the speaker similar to the frequency of the mobile phone?
收錄日期: 2021-04-24 00:42:19
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090104000051KK01950