Finally got round to making a web site for my audio and electronics stuff.
The address is...

http://audio.yachtsea.com/

It's under construction at the moment, and the subdomain may take a few
hours to activate. The webcam is currently pointing at the laptop's screen,
showing the output from my first attempt at an active low-pass filter.

The o/p is generated from a sweep oscillator, goes through the op-amp based
filter, and into the laptop's digital audio input. The WinScope software
(freeware) then puts the result on the screen. The red trace is the i/p
signal, the pale yellow is the filtered o/p.


--
Wally
www.artbywally.com
www.wally.myby.co.uk