How to make a mono sound to sound stereo?

How to do this, that and the other. Share, learn, teach. How did X do that? How can I sound like Y?
KVRist
43 posts since 25 Mar, 2017

Post Sat Apr 03, 2021 6:32 am

Hi there.

I want to make a mono synth sample to sound stereo so I duplicated the sound and slightly shifted few ms to the right one of them and I panned one to the right and one to the left. Now I have a stereo sound but the thing is when I check mono compatibility I hear the sound like I put it under a phaser effect.

Here you have the mono sound:
https://soundcloud.com/user-633456630/synth-mono

Here you have two of the same sound, one panned to the left and the other to the right and one of them is slightly shifted few ms so is not playing in the exact same time.

https://soundcloud.com/user-633456630/synth-stereo

Here you have the mono compatibility checked with the master stereo separation knob from FL Studio.

https://soundcloud.com/user-633456630/s ... mono-check


I hope you guys can help me. Thanks!!!

User avatar
addled muppet weed
77740 posts since 26 Jan, 2003 from through the looking glass

Post Sat Apr 03, 2021 6:40 am

try flipping the phase of one channel.
or maybe nudge it along a few ms.

a phaser is in essence, a very short delay. taking it closer to a delay sound should remove phase issues :)

User avatar
KVRAF
3917 posts since 6 Nov, 2009

Post Sun Apr 04, 2021 12:59 am

Along with Vurt's good advice, you could try re-micing the synth in a real room, reverb, the ADT effect, slight old-style pitch shift, slight quantize, or even play it two times live-- creating very minor timing and velocity differences, all those panned hard right and left obviously. Good luck!
Last edited by arkmabat on Sun Apr 04, 2021 1:15 am, edited 2 times in total.

User avatar
KVRAF
3917 posts since 6 Nov, 2009

Post Sun Apr 04, 2021 1:07 am

Here's an ADT-effect freebie which may come in handy:
http://www.nullmedium.de/dev/audioplugins/

And this plugin, while not free, handles a few of the things mentioned above automatically: https://www.stillwellaudio.com/plugins/cmx/

KVRer
25 posts since 21 Nov, 2018

Post Fri Apr 09, 2021 9:54 pm

There are boatloads of spatializers and stereo widener plugins, probably your DAW has one or more already. Find out what you already own.

User avatar
KVRAF
12696 posts since 8 Mar, 2005 from Utrecht, Holland

Post Sat Apr 10, 2021 2:45 am

Lately someone posted a simple approach: 32-band stereo EQ, set bands alternating boost-cut-boost-cut on the left and on the right the opposite: cut-boost-cut-boost.
Leave lowest octaves and the highest dead centre. This should only affect midrange, say 160Hz-8kHz.
We are the KVR collective. Resistance is futile. You will be assimilated. Image
My MusicCalc is back online!!

KVRAF
2299 posts since 2 Jun, 2016

Post Sat Apr 10, 2021 2:52 am

BertKoor wrote:
Sat Apr 10, 2021 2:45 am
Lately someone posted a simple approach: 32-band stereo EQ, set bands alternating boost-cut-boost-cut on the left and on the right the opposite: cut-boost-cut-boost.
Leave lowest octaves and the highest dead centre. This should only affect midrange, say 160Hz-8kHz.
Good idea.
What amount of db gain / reduction are you thinking for each of those approriate bands?

User avatar
KVRAF
12696 posts since 8 Mar, 2005 from Utrecht, Holland

Post Sat Apr 10, 2021 3:01 am

"Apply to taste" ....

Maybe 6dB is enough already.
We are the KVR collective. Resistance is futile. You will be assimilated. Image
My MusicCalc is back online!!

KVRAF
1643 posts since 14 Sep, 2004 from $HOME

Post Sat Apr 10, 2021 3:06 am

A good chorus is a classic stereoizer, can be a subtle one like a Dimension D emulation or something more obvious like the TAL-Chorus. Mix to taste.

User avatar
Boss Lovin' DR
7856 posts since 15 Mar, 2002 from the grimness of yorkshire

Post Sat Apr 10, 2021 3:58 am

I've always found this (used within reason, i.e. not over the top) to be the best I've heard at adding realistic stereo effect, rather than doubling;

https://www.izotope.com/en/products/ozone-imager.html

KVRian
731 posts since 25 Aug, 2006

Post Sat Apr 10, 2021 12:44 pm

For mono compatibility try things like MSpectralPan for free
https://www.meldaproduction.com/MSpectralPan
or not free Nugen Stereoizer which I like a lot. Their Stereoplacer is similar to MSpectralPan.
https://nugenaudio.com/focus

User avatar
KVRian
686 posts since 7 Apr, 2019

Post Sat Apr 10, 2021 2:26 pm

I'll make a free haas plug-in for windows to do what You need. Frankly, customer service for mac is a nightmare right now so I'm holding off on catering to it, apologies in advance. It should not use more than 1% CPU.

I was working on something that worked well the other day to do the same, and I can release it maybe by tonight. It has phase control also and is so light on the CPU that you'll find it a real pleasure to utilize.

Till then :)
DSPplug Products https://www.kvraudio.com/marketplace/dspplug
DSPplug Linktree https://linktr.ee/dspplug
Voiceover, Design, Ghost Production, Ghost Writing services.

KVRer
6 posts since 10 Apr, 2021

Post Mon Apr 12, 2021 11:26 am

Great advice here

Rad Grandad
33181 posts since 6 Sep, 2003 from Downeast Maine

Post Mon Apr 12, 2021 12:13 pm

sebastianlive wrote:
Sat Apr 03, 2021 6:32 am
Hi there.

I want to make a mono synth sample to sound stereo so I duplicated the sound and slightly shifted few ms to the right one of them and I panned one to the right and one to the left. Now I have a stereo sound but the thing is when I check mono compatibility I hear the sound like I put it under a phaser effect.

Here you have the mono sound:
https://soundcloud.com/user-633456630/synth-mono

Here you have two of the same sound, one panned to the left and the other to the right and one of them is slightly shifted few ms so is not playing in the exact same time.

https://soundcloud.com/user-633456630/synth-stereo

Here you have the mono compatibility checked with the master stereo separation knob from FL Studio.

https://soundcloud.com/user-633456630/s ... mono-check


I hope you guys can help me. Thanks!!!
try pitching one up a few cents and the other down a few cents...I learned this technique in recording magazine like around 2000, I have tried it on a few things, it's on the vox of one of my songs and I liked it, pitch up a few cents on one side, down a few on the other, one side slightly (by ms's) ahead of the beat and one after...I did this on an Akai dps12, not a computer thats why I havent done it since...recording magazine called it a spreader back then...it might be fun to try :shrug:
A toxic person needs someone to attack when their ego is threatened.

User avatar
KVRian
686 posts since 7 Apr, 2019

Post Mon Apr 12, 2021 12:24 pm

I used that new plug-in I promised in a new video:
https://tinyurl.com/lowlightLUT

and will provide it today; I've been busy with responsibilities. You'll be really happy with it.
DSPplug Products https://www.kvraudio.com/marketplace/dspplug
DSPplug Linktree https://linktr.ee/dspplug
Voiceover, Design, Ghost Production, Ghost Writing services.

Return to “Production Techniques”