"moog" all-pass, was: moog hp

[Donald Johnson]

From:           	"tomg" <vco at mindspring.com>
To:             	<synth-diy at mailhost.bpa.nl>
Subject:        	Re: moog hp
Date sent:      	Mon, 29 Mar 1999 00:05:33 -0500

> You know what??? huh huh?? If you add (10) 10K
> resistors, one each from the output of each amp to 
> the non-inv input of the next. Put them in all the fb
> loops (changing the last amp to a lag circuit) then 
> connect one to the input side out of the first resistor 
> and one to the output side of the last then mix the 
> signals together you get a all-pass filter (phase shifter). 
> I just tried it cool!...humm I wonder if this means 
> removing the resistors from a phaser would make it a 
> hi-pass....
> 
> btw: if you try this replace the 0.1s with .01s...it sounds
> better.
> 
> -tg

 Hey! Where's the schematic?!  :)  

 Honestly, I'd like to thank you for publishing your results
 on the mailing list and in your "cookbook".

 So, ... How about a schematic for this one? I think I know what you
 did but I don't quite sure about the 'last amp' and the 'lag circuit'.

 don.


( (        don johnson        ) )
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