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Whistle responder circuit

Discussion in 'Radio and Wireless' started by mahdi8102, Jul 12, 2021.

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  1. mahdi8102

    mahdi8102

    1
    0
    Jul 12, 2021
    Hi everyone! I'm looking for a circuit that responds to my whistle. In other word I want a frequency detector. Can anyybody help me? I just found this circuit in google but doesn't work in real and virtual!
    Thanks all.
     
  2. bertus

    bertus Moderator

    1,906
    715
    Nov 8, 2019
    Hello,

    You could try to make a tone detector using the LM567.

    Bertus
     

    Attached Files:

    mahdi8102 likes this.
  3. Audioguru

    Audioguru

    3,333
    709
    Sep 24, 2016
    My daughter bought a "keys finder" whistle detector. It was triggered by almost any sounds and was useless.
    This very simple circuit will probably do the same and even be triggered by its own beeper.
     
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