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DIY Stompboxes => Building your own stompbox => Topic started by: abracadabraHomer on May 12, 2004, 05:31:59 PM

Title: Merge two signals
Post by: abracadabraHomer on May 12, 2004, 05:31:59 PM
Hi, I want to merge two signals (parallel FX), but they may not influence each other. Simple as possible, 2 in 1 out. Where is the answer....
Title: Merge two signals
Post by: drew on May 12, 2004, 09:53:30 PM
(Nobody's gonna answer this one?)

To combine two inputs into one output, you need a mixer.

A simple "resistance mixer" or "passive mixer" (google for those phrases) will do you fine unless you're mixing several tracks at once.


drew
www.toothpastefordinner.com
Title: Merge two signals
Post by: strungout on May 13, 2004, 12:23:50 AM
You could also search the forum here for "blending", "mixing" and all related wordings :D

Ciao.
Title: Merge two signals
Post by: toneman on May 13, 2004, 12:44:37 AM
can U say "Mixer"??
not as in "stainless steel"
not as in "Schwepe's Effervesant"
not as in "with the dual, rotating spatulas"
but as in---
guitar + cello + drum + vocal1 + synthasizer + bass + piano
each one has it's own knob.
then there's the "master control" knob.
DO touch that dial!!!
staymixedup
Hoohahahahahaha
tone
Title: Merge two signals
Post by: B Tremblay on May 13, 2004, 06:47:51 AM
You could use the Return sections of the Splitter-Blend at runoffgroove.com

http://runoffgroove.com/splitter-blend.html
Title: Merge two signals
Post by: markusw on May 13, 2004, 07:42:50 AM
I would use an OPamp configured as inverting unity gain section and add a second one to reinvert the signal. But for sure there are people here that know much more about this than me.
Title: Merge two signals
Post by: yano on May 13, 2004, 12:20:11 PM
You can learn a fair amount about mixing two or more channels at these links:

http://www.all-electric.com/schematic/simp_mix.htm
http://www.generalguitargadgets.com/v2/index.php?option=displaypage&Itemid=123&op=page&SubMenu=

And this is my own mixer project:
http://yano.lardpirates.com/electronics/mixer/stages/index.php

This may be even more relevant, if not overkill:
(http://yano.lardpirates.com/electronics/reference/schematics/blender.jpg)

When R1 is in the center, both inputs will be at an equal level, towards either extreme, and each signal's relative volume will change.