Generating tones with computer sound card

[Ian Daniher]

I have used my computer as a function generator in the past, with much
success. I have used the gui'ed programs Audacity and GNUsound for waveform
analysis and tone generation, with success depending upon the independent
sound card.
Keep me posted,
-- 
Ian Daniher
it.daniher at gmail.com
Skype : it.daniher
irc.freenode.com: DyDisMe


On 10/31/07, Mitch Bradley <wmb at laptop.org> wrote:
>
> Arjun Sarwal wrote:
> > Hi,
> >
> > I need to do some testing (need sine waves of 50hz, 1khz, 10khz) and I
> > am unable to get hold of a function generator. I was thinking of using
> > my computer (PC) sound card to generate these tones. I am wondering if
> > anybody has done this - so that I may know how clean such tones
> > generated from the computer sound card generally are ?
>
> The output from a computer sound card can be excellent.  16-bit
> synthetic audio, when properly antialias-filtered (which should be done
> automatically by the coded), is fine for all practical purposes that you
> are considering.  However, the actual analog output characteristics of
> specific PCs varies widely.  I have one Dell laptop whose audio output
> quality (from the headphone jack) is abysmal - it is very noisy,
> probably due to crosstalk from digital circuitry and poor layout of the
> analog circuitry.  A Dell desktop PC I used to have had very good audio
> quality.
>
>
> >
> > thanks,
> > Arjun
> >
> > --
> > Arjun Sarwal <arjun at laptop.org <mailto:arjun at laptop.org>>
> > ------------------------------------------------------------------------
> >
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>
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