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Guitar Effects — Parallax Forums

Guitar Effects

PFloyd36069PFloyd36069 Posts: 135
edited 2008-01-12 00:04 in BASIC Stamp
Hi,

This may be a stupid question but im gonna ask anyway. Is there any way to take a frequency (from a guitar or something) and increase it by variable amounts·like with a potentiometer or something? If it isnt possible with a basic stamp, then can anyone tell me what kind of circuit i would need to make to do this. What i am trying to achieve here is to make a whammy pedal like the one that david gilmour used in "Marooned" off of the division bell album. He also used this pedal on "The Blue" off of his solo album "On an Island"

Thanks
Bryan

Comments

  • Mike GreenMike Green Posts: 23,101
    edited 2008-01-11 22:32
    Someone has been working on a guitar effects box using a Propeller. Search the Propeller forum for that.
    A Stamp is not fast enough to process audio although it can be used for controlling external circuitry.
  • PFloyd36069PFloyd36069 Posts: 135
    edited 2008-01-11 22:38
    Hi Mike,

    Do you know if i input the guitar signal into a frequency-voltage converter and then through a voltage-frequency
    converter,·then·vary the voltage input to the V/F converter. would it work or would it just make some funny noises.

    thanks
    bryan·
  • Mike GreenMike Green Posts: 23,101
    edited 2008-01-11 22:42
    Frequency to voltage and voltage to frequency converters are really intended for use with pure single tones, not a complex audio signal like that from an instrument with lots of harmonics. You'll lose all the complexity of the sound.
  • PFloyd36069PFloyd36069 Posts: 135
    edited 2008-01-11 22:47
    Is there any other kind of circuit that you know of that would achieve this? I cant even begin to think of what kind of components this circuit might require.
  • Max WoodenMax Wooden Posts: 112
    edited 2008-01-11 23:07
    As I am currently listening to "Piper at the Gates of Dawn" right now this caught my attention. I would HIGHLY recommend the following books.

    Electronic Projects for Musicians

    Do it Your Self Projects for Guitarists

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Max Wooden
    Reedley, California
  • Mike GreenMike Green Posts: 23,101
    edited 2008-01-12 00:04
    Found the thread: http://forums.parallax.com/showthread.php?p=690777

    Have a look at it.
    ·
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