[sdiy] Fast envelope follower circuit needed..

Tristan tu at alphalink.com.au
Sat Mar 30 23:32:19 CET 2013

A 3dB attenuation actually approximates a halving of the signal power, as power is related by the 
square of the amplitude. Changing a 6 volt signal to 12 volts is an approximately 6dB increase in 


On Sun, Mar 31st, 2013 at 3:43 AM, Paul Anderson <wackyvorlon at me.com> wrote:

> To add to these comments, the cut off on most filters is often defined at the
> point of 3dB of attenuation. 3dB roughly equates to a doubling or halving of
> amplitude. So a 3dB increase on a 6 volt signal makes it 12v. 
> Filters look very simple, but the theory is surprisingly complex. 
> Sent from my iPhone

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