Please help !! sound activated curcuit

Discussion in 'The Projects Forum' started by tomdiddly, Feb 11, 2013.

  1. tomdiddly

    Thread Starter New Member

    Feb 6, 2013
    Hey people of superior intellegance, you maybe able to save a strangers degree. Like I say im in my 3rd year of a broadcast engineer degree , and for my final project I plan on creating a sound activated curcuit that will switch between four setting on a Techtronix WFM.
    I have come across a curcuit diagram that I believe may do the job, the link is below. My question is how would the curcuit be able to control
    four things from a single microphone ? Any help or advice would be amazing !! Thanks
  2. KrisBlueNZ


    Oct 17, 2012
    What exactly do you want to do?
    Turn four different switches on and off independently?
    Select one of four options like radio buttons?
    Why do you want it to be controlled by audio? So you can operate it from anywhere in the room? Some other reason?

    You might be able to use a four-pitch whistle and a tone decoder or four frequency detectors to do something like what you want. Start by describing what you want!