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Discussion in 'Electronic Design' started by Dirk Bruere at Neopax, Jan 18, 2005.

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  1. Further to the TMS project I'm looking for a cheap or free waveform editor.
    I want to use a PC soundcard to play a suitable .wav file through an amp into
    the coil.

    The .wav is a series of pseudorandom pulses of millisecond duration at around
    150Hz. I need an editor to create the file.

    Any ideas?

    --
    Dirk

    The Consensus:-
    The political party for the new millenium
    http://www.theconsensus.org
     
  2. Don Pearce

    Don Pearce Guest

    Something like Matlab would be the choice here.

    d

    Pearce Consulting
    http://www.pearce.uk.com
     
  3. Since I don't own it and don't want to pay for the vast array of features I will
    never use, does anyone have any other ideas? What I want seems simple - a
    Windows GUI where I can draw a waveform and have the soundcard play it. It must
    exist somewhere.

    Any PC based audio signal generator s/w on the market that is free (or cheap)?

    --
    Dirk

    The Consensus:-
    The political party for the new millenium
    http://www.theconsensus.org
     
  4. You can convert csv values easily to a sound file using sound editing
    programs such as Cool Edit Pro. Just write a program in your favorite
    language to spit out such a file and Robert's your uncle.



    Best regards,
    Spehro Pefhany
     
  5. Jim Thompson

    Jim Thompson Guest

    Would I want Robert to be my uncle ?:)

    ...Jim Thompson
     
  6. Cool Edit Pro - $299
    Still looking...

    --
    Dirk

    The Consensus:-
    The political party for the new millenium
    http://www.theconsensus.org
     
  7. SCADA

    SCADA Guest

    You could create a file in Excel, save it as a .csv.
    Open it in "Dplot" www.dplot.com then save it as a .wav
     
  8. SCADA

    SCADA Guest

    You could create a file in Excel, save it as a .csv.
    Open it in "Dplot" www.dplot.com then save it as a .wav

    PS-My apologies for the previous top post!
     
  9. I just use wordpad and Sigview32.
    See http://www.tinaja.com/magsn01.asp
    Also http://www.tinaja.com/gurgrm01.asp

    --
    Many thanks,

    Don Lancaster
    Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552
    voice: (928)428-4073 email:

    Please visit my GURU's LAIR web site at http://www.tinaja.com
     
  10. PN2222A

    PN2222A Guest

    Dirk

    Take a look at Goldwave : Fully functional shareware with a bunch of
    options.
    which might or might not handle your need for a pulse sequence.

    If I were doing this, I'd use Excel to generate the time points and then
    fidget
    the saved (text format) file into a .wav file after I'd understood the .wav
    format. But I use Excel for lots of computations where others would use a
    math package.

    Regards
    PN2222A
    min. hfe 100 (at Vce=10V Ic=150mA)
     
  11. James Meyer

    James Meyer Guest

    My favorite way to create .wav files is to use LTSpice. You use the
    program to create a circuit that makes the waveform you want and then save the
    voltage as a .wav file. You could use piece-wise signal sources to generate any
    arbitrary waveform. Or if you have the math skills, you can use a signal source
    that interprets a formula. If the generated waveform is random, you can run it
    through all sorts of filters to bandlimit it.

    You could even simulate a Moog synthesizer with it. I've used it to
    generate ultrasound doppler bloodflow signals.

    LTSpice is so nice that if it could cook, I'd marry it!

    Jim
     
  12. Goldwave will probably do it but I have not tried. I got a copy of
    that for free with a sound chip development kit.


    Best regards,
    Spehro Pefhany
     
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