Spin Semiconductor

Hi! I see on this schematic that the input and the output are filtered by two second order opamp filters. Is it necessary to use them on a guitar pedal design? Is SNR improved with this method?

http://www.echotapper.nl/wp/wp-content/ ... w_1_5b.jpg

Thanks!

You will need to ask Piet over at echoTapper, he made the filters as part of the overall emulation of tape based delay.

frank wrote:You will need to ask Piet over at echoTapper, he made the filters as part of the overall emulation of tape based delay.

Frank, besides the emulation effect, my question is: if i'm going to feed my effect with a guitar (Bw from 80hz to 10khz) is it a good practice to restrict the BW of the input and output buffers? Does this helps to reduce possible hiss noise from the fv1?

Too many variables such as layout, etc. All I can suggest is try it and see if you like it.

Mcfly wrote:Hi! I see on this schematic that the input and the output are filtered by two second order opamp filters. Is it necessary to use them on a guitar pedal design? Is SNR improved with this method?

http://www.echotapper.nl/wp/wp-content/ ... w_1_5b.jpg

Thanks!

The way filtering was designed was to match the Meazzi machines. At the present,the latest filter design was optimized by Steve Mitchell. Obviously all with emphasis on vintage Meazzi curves.

Piet