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Cause of echo in VoIP conversation

  1. May 18, 2012 #1
    Hello Forum,

    it can happen that in a VoIP conversation we hear some echo, i.e. we hear our voice, with a certain delay...

    We speak and the signal goes to the receiving party. Why would a copy of our voice signal make a round trip and come back to us?
    What causes that "reflection" of the signal?

  2. jcsd
  3. May 18, 2012 #2


    User Avatar

    Staff: Mentor

    If their microphone can hear their speaker, you will get an echo.

    You don't get echos if they are using a handset, since the speaker is covered by their ear, and the microphone generally can't hear the speaker...
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