making a spectrum analyser - how to?

i want to make a spectrum analyser about 7 band, maybe 10 led's ber band/bar.

what would be a simple way of doing it jaycar have a 4 band kit, could mod that, but is their and easy way?

its for an effect, doesnt have to be highly acurate,

Reply to
Matt2 - Amstereo
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ETI (I think) did a multi channel LED spectrum analyser back in the

70's, one board per channel with about 10 LEDs. The article should still be relevant. Can probably dig up details if you want. Basicially it's a band pass filter with a peak detector per channel.

Dave :)

Reply to
David L. Jones

Cheaper to use an old computer with soundcard and SA (FFT) software these days.

MrT.

Reply to
Mr.T

Look at Circuit Cellar web site

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I am pretty sure I've seen article about one recently. They have list of all articles in all editions. Some are available online.

Rudolf

Reply to
Rudolf

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