What causes a chirp?

Peter ... I once had a pair of Sota 3 way speaker that I wired backwards .. sent the power from the amp to the woofer and then jumped the midrange from the woofer and jumped the tweeter from the midrange ... this created quite a draw on the woofer and did something to the woofer's impedance ... this caused the woofer voice coil to constantly bottom out on peak passages and the woofer would make a very loud and frightening bang or clacking sound ... I don't think this is your problem  

The single chirping sound you are hearing may be caused by what is referred to as Modem Ping being pick up as airborne
born RF by your low level ICs or a low level component  ... the ping is used to test the circuit or verify a connection ... I also believe hacker use this type of Ping to try and enter your system by verifying  that your modem is in service and your computer is turned on 

I also wouldn't rule out your alarm service pinging your house's security system to verify it's connection   

Try removing the cable feed from the street that goes to your computer modem's input and see if the chirping goes away ... you may also want to take a look at your home security feed from the street  

here's some info I dug up on the net about modem ping  

https://www.raymond.cc/blog/blocking-ping-response-in-windows-to-prevent-hackers-from-finding-you/ 

http://smallbusiness.chron.com/modem-ping-32245.html 

https://search.aol.com/aol/search?s_chn=prt_bon&q=computer+modem+pinging+&s_it=comsearch

 

 

Enter your text ...

I find changing the battery in the smoke detector eliminates this chirp!



:-)

....voiceboil Was funnier, though..made me think of quiet annoyance rising to a crescendo of rage.  Made me stop to consider where I've seen that....

Oh, yeah...the 'whose cables' better' forums...;)

Well tks matt,; and asvjerry - I like that. As little Johnny says "It shows you're thinking".
Davehrab I appreciate your comments and will explore your links.
Cheers; it's time for some B&B. Bach and Brandy...

What causes a chirp?

In loudspeakersptss

If it happens around the same time of day, in my HT setup it's the off peak hot water mains signal coming through the system.

Cheers George