Analog switch click... Will a low pass filter smooth it out?
- From: "PPP" <pispaspos@xxxxxxxxx>
- Date: 13 Dec 2006 11:32:25 -0800
Howdy!
I asked a question earlier regarding analog switches. I decided to
capture the output waveform from the oscilloscope using the analog
switch logic channel as my trigger point. Here is what I have:
http://tinypic.com/view/?pic=40pbxiv
I replaced the inverter in my original circuit (see here:
http://tinypic.com/view/?pic=2u6jvp3 ) with an attenuator. I guess it
makes since that the amplitude of the output waveform drops when it
switches.
For those with audio experience, does this discontinuity in the
waveform really cause a clicking sound? I figured that if I
instantaneously increase and decrease the amplitude of a sound source,
then I would only hear an annoying amplitude variation and not a click.
Also, if I add a low pass filter at the output of the switch and
configure it to have a 3dB frequency of 20KHz, then will this smooth
out the discontinuity?
Thank you!
P.
.
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