hall reverb distortion

jovesdies · Post by **jovesdies** » Sun Sep 22, 2013 2:34 am

Hi,
I've built a simple guitar reverb pedal using hall reverb program.
It's sounds good but I've noticed that when I pick hard on strings (with high values of reverb time) there is a cracking noise on the high frequency (llike a sssshhhh) on the reverb part only (not the dry signal).
The schematic is simple : input buffer, FV-1 , output mix (dry from the buffer + reverb from FV-1). I've put a simple low pass RC before the Fv-1 (around 7 khz) and after FV-1 (around 7 khz).
Is it possible to modify the program to eliminate the High frequency harshness?

frank · Post by **frank** » Sun Sep 22, 2013 10:30 am

Difficult to answer, could be you are clipping an internal register. Is the clip LED turning on?

jovesdies · Post by **jovesdies** » Mon Sep 23, 2013 5:07 am

The clip led turns on only if I hit hard the strings near the pickup with all my fingers.

frank · Post by **frank** » Mon Sep 23, 2013 9:06 am

Will need more info, a recording of the sound, what does it look like on a scope, any other measurements you can make.