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.
<br>Keep me posted,<br>-- <br>Ian Daniher<br><a href="mailto:it.daniher@gmail.com">it.daniher@gmail.com</a><br>Skype : it.daniher<br><a href="http://irc.freenode.com">irc.freenode.com</a>: DyDisMe<br><br><br><div><span class="gmail_quote">
On 10/31/07, <b class="gmail_sendername">Mitch Bradley</b> <<a href="mailto:wmb@laptop.org">wmb@laptop.org</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Arjun Sarwal wrote:<br>> Hi,<br>><br>> I need to do some testing (need sine waves of 50hz, 1khz, 10khz) and I<br>> am unable to get hold of a function generator. I was thinking of using<br>> my computer (PC) sound card to generate these tones. I am wondering if
<br>> anybody has done this - so that I may know how clean such tones<br>> generated from the computer sound card generally are ?<br><br>The output from a computer sound card can be excellent. 16-bit<br>synthetic audio, when properly antialias-filtered (which should be done
<br>automatically by the coded), is fine for all practical purposes that you<br>are considering. However, the actual analog output characteristics of<br>specific PCs varies widely. I have one Dell laptop whose audio output
<br>quality (from the headphone jack) is abysmal - it is very noisy,<br>probably due to crosstalk from digital circuitry and poor layout of the<br>analog circuitry. A Dell desktop PC I used to have had very good audio<br>
quality.<br><br><br>><br>> thanks,<br>> Arjun<br>><br>> --<br>> Arjun Sarwal <<a href="mailto:arjun@laptop.org">arjun@laptop.org</a> <mailto:<a href="mailto:arjun@laptop.org">arjun@laptop.org</a>>>
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