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 [EMAIL PROTECTED] mailto:[EMAIL PROTECTED]
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