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Hey people, I am looking to create a sound activated curcuit to switch between settings on a techtronixs WFM. My question is to any intelligent beings, how would it be possiable to control/switch between four outputs with only one microphone ? Here is a link to the curcuit I am talking about . Any help at all, would be amazing . thanksss

https://www.google.co.uk/search?q=sound+operated+switch+project&hl=en&tbo=u&tbm=isch&source=univ&sa=X&ei=Kj8SUdXZDKfC0QWh74GgDw&ved=0CDMQsAQ&biw=1366&bih=650#imgrc=c-npzEWLHmjAxM%3A%3BtD6RPwy-fm9W0M%3Bhttp%253A%252F%252Fgsuryalss.files.wordpress.com%252F2011%252F02%252Fclap-activated-remote.gif%3Bhttp%253A%252F%252Fgsuryalss.wordpress.com%252Fcategory%252Fprojects%252F%3B1280%3B475

You are only a click away from your answer. Click on these circuit and you will get to this page:

http://gsuryalss.wordpress.com/category/projects/

Then you have to scroll down till you see the circuit again, and also a lot of text about these circuit ...

This might help:

https://www.circuitlab.com/forums/power-electronics/topic/z3c43kph/single-touch-sensor-to-turn-on-and-off-12v-out/

Use a microphone at the input.

Search CL for:

Electret Microphone

Maybe reduce the amplifier stage gain.

Then use the Schmitt Trigger output to clock a 4 bit shift register to cycle round all 4 outputs (a 5 bit register would give an all off state).