The "answer" button on earbuds? How does it work?

Discussion in 'General Electronics Chat' started by breegeek, Apr 17, 2011.

  1. breegeek

    Thread Starter New Member

    Apr 14, 2011
    3
    0
    Hey all,

    I am wondering how the "answer the call"/"pause" button works on my earbuds.

    I have an iphone and am using a 3rd party set of earbuds and enjoy the fact that when I hear my phone ring through the earbuds, I can press a button and voila, I am answering the call.

    But, I don't know exactly how it works?

    Part of why I am curious is I am trying to design a really low budget way of finding out if my phone is ringing (at a club or something) from a distance using ______ (however the heck I figure out how to detect a call) and some Zigby footwork.

    What do you think?

    All thoughts appreciated
     
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