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Guitar effect using DSP

Discussion in 'Electronic Design' started by Boris, Sep 16, 2006.

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  1. Boris

    Boris Guest

    Does anybody know how to make a guitar effect using DSP?
    I heard that distortions are more difficult, but I want something
    simple like delay effects, reverb, chorus. Maybe a block diagram of the
    whole thing will be helpful.
    I´ve seached in google and I found lots of C codes for DSP, but I
    don´t know how to build the whole thing. After my guitar jack, I input
    the signal into a preamp - ADC(44.1ksps?) - DSP - DAC - Speaker? is
    that all? Its not that simple, right?
    Thanks a lot!
     
  2. This would be a software issue.

    Note it's not a new thing. People were discussing it in early home
    computer magazines, though it was so much harder back then when
    the CPUs were slow and RAM was expensive. A DSP just does it
    offloaded from the computer's CPU, and is streamlined for the task.

    Hal Chamberlin's "Musical Applications of Microprocessors", the
    first edition came out in the late seventies or early eighties, but
    since we are talking basics the explanations are bound to still
    be valid, even if the hardware has progressed since then.

    Michael
     
  3. This may be of help
    http://www.axoris.be/AL3101.php


    martin
     
  4. Eeyore

    Eeyore Guest

    C is crap for DSP.

    Dare I say this ! Assembler is great for DSP !

    I've done it and written my own algoritms too. Good luck to you !
    http://www.google.com/search?hs=7Hg...n&q=virtual+acoustic+room+gardner&btnG=Search

    http://www.google.com/search?client...coustic+room&sourceid=opera&ie=utf-8&oe=utf-8

    Are good starting places.

    Graham
     
  5. Guillaume

    Guillaume Guest

    Delay is simple indeed.
    Reverb is definitely not (if you want anything usable).
    Chorus is somewhere in between.

    Actually, an acceptable distortion is probably easier to implement than
    a reverb or a chorus.
     
  6. Buy a Behringer pedal. It wil be way cheaper than building, take no time
    to implement, and actually work.

    Kevin Aylward B.Sc.

    http://www.anasoft.co.uk
    SuperSpice, a very affordable Mixed-Mode
    Windows Simulator with Schematic Capture,
    Waveform Display, FFT's and Filter Design.

    "There are none more ignorant and useless,than they that seek answers
    on their knees, with their eyes closed"
     
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