Crosstalk in snake cable that include speaker cables and mic cables
Phil Allison wrote:
Tim Sprout wrote:
How does one detect ultrasonic oscillations?
** Strangely, an analog multimeter does the job quite well.
My own 20kohms/V one is only -3dB at 150kHz on the 50V AC range,
Old-style VU meters are pretty good at responding to ultrasonic and subsonic
stuff.
It's kind of cool using B&K mikes and watching the meters bouncing up and
down from the air currents in the hall.
However, if you're looking for very small ultrasonic sources (or even high
frequency sonic ones, like small amounts of TV sweep leakage), you'll need
something a bit tighter, like an FFT display.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
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