Re: Comparison of laptop audio output and function generator
- From: "Charles" <charlesschuler@xxxxxxxxxxx>
- Date: Wed, 26 Sep 2007 19:20:51 -0400
"MRW" <mr.whatever@xxxxxxxxx> wrote in message
news:1190831539.138843.94910@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
I am experimenting with an Instek oscilloscope. I have two sources.
One is an audio output from the laptop, and another one is a tone
output from a function generator.
This is a video of the laptop output:
http://video.google.com/videoplay?docid=-8413182111152350269&hl=en
This is video of the function generator output:
http://video.google.com/videoplay?docid=-3995690077431458348&hl=en
I just terminate the sources to a 1k-ohm resistor and put the
oscilloscope probes across the resistor.
Are laptop audio outputs really that "poppy" (intermittent signal
spikes)?
When I plug in a headphone to the output jack of the laptop, the tone
sounds clean. I was expecting to hear tiny pops.
If I were to take the laptop audio signal and re-route it to a
different circuit, how would I make the waveform "cleaner" like the
one from the function generator output?
I'm afraid that if I take the audio output of the laptop and connect
it to an amplifier, then the spikes will also get amplified and become
noticeable.
The first link is not working for me. Sorry.
Laptop audio outputs are all over the place ... in my experience ... some
OK, some very marginal. Your ear will miss some things that a scope will
see. You could use a filter with the laptop to clean up the waveform.
.
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