PD Space Guitar Synthesizer is in BETA

August 2019 is the first KVR Guitar Month so here's a new forum for discussion of all things guitar!
KVRer
6 posts since 25 Mar, 2021

Post Thu Mar 25, 2021 4:21 am

The Space Guitar Synthesizer is being developed as a non-midi polyphonic expressive synth with saw and squaretooth sounds. It has pitchshifting, dynamic polyphonic filtering and modulation.
There is no fixed release date yet, and it is uncertain whether it will be released for all platforms.
Links to the beta for win/macos/iOS are below.

https://youtu.be/57byWpKzZuE

Windows:
Space Guitar Synthesizer - windows BETA 2
standalone only
Version 1.2: fixed cabinet and reverb
https://drive.google.com/file/d/1zBTOFd ... sp=sharing

macOS:
Space Guitar Synthesizer - macos BETA 2
standalone only
https://drive.google.com/file/d/18FC_aA ... sp=sharing

-Make sure your mac allows the app:
system settings, security and privacy: check "appstore and indentified developers"
-The app should now be startable, after some warning.
-A workfolder in your documentsfolder will be created. Presets, cabinet and reverb IR's reside there.
-7 example patches are included, saving is disabled. App will however remember last settings when opened.

Space Guitar Synthesizer - *iPad (iOS 12 and up)*
Includes AUv3 version
1) make sure you've installed "testflight" on your ipad.
2) then click on the following link
https://testflight.apple.com/join/gHe6ZWUc

Please mind your ears though: the builtin amp will allways limit the signal, but if you disable the amp, sound might get louder.
I hope the app is inspiring for you, and I am open to suggestions: my main goal was to
1 - keep the thing manageable in terms of numbers of parameters and such
2 - keep the playfeel like a normal guitar as much as possible.
3 - keep CPU reasonably low.
4 - and ofcourse, most important: expand the guitar soundhorizon into deep space!
BETA is provided as is, no warranty is given in any form

Regards,
Paul Driessen
Guitarist/DSP Designer

KVRer

Topic Starter

6 posts since 25 Mar, 2021

Post Thu Mar 25, 2021 4:30 am

Known issues:
- the UI is not 100% finished.
- on iOS there is some instability while used as an AUv3 in AUM.
- the AMP is just an EQ,LIMITER,OVERDRIVE.. So don't expect an ampsim there!
(In my experience such a more clean approach works better with synth sounds anyways.)

You can drop your demolinks/comments at https://www.facebook.com/experimentalPaul

also, please note: Filtersetups and the like are likely to change between betas: it's early in this apps life, a lot can still change.

Regards,
Paul

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KVRAF
4403 posts since 22 Jul, 2006 from Tasmania, Australia

Post Thu Mar 25, 2021 6:14 am

very nice sounding demo
- how would you describe your pitch to synth conversion?

KVRer

Topic Starter

6 posts since 25 Mar, 2021

Post Thu Mar 25, 2021 6:40 am

nix808 wrote:
Thu Mar 25, 2021 6:14 am
very nice sounding demo
- how would you describe your pitch to synth conversion?
thanks!
It's a direct poly tracker, which works good enough for the buildin waveforms. A midi output of it wouldn't look that great, but that coincides with the original guitartone's transient being dirty as well.

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KVRAF
4403 posts since 22 Jul, 2006 from Tasmania, Australia

Post Thu Mar 25, 2021 8:13 am

sounds wonderful({edit}once more, the tone in the demo, i meant)!

-did you have issues with harmonics?
Last edited by nix808 on Thu Apr 01, 2021 11:23 am, edited 1 time in total.

KVRer

Topic Starter

6 posts since 25 Mar, 2021

Post Thu Mar 25, 2021 8:39 am

nix808 wrote:
Thu Mar 25, 2021 8:13 am
sounds wonderful!

-did you have issues with harmonics?
no, there is no hard distinction between root partial and harmonics, so also no problems there..

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KVRAF
4403 posts since 22 Jul, 2006 from Tasmania, Australia

Post Thu Mar 25, 2021 1:06 pm

oh I think I see, so it behaves perhaps like a guitar, where the harmonic content doesn't sound bad

I'll take it for a run today and get back to you here with how it's going

thanks for helping us in this vastly interesting area

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KVRAF
4403 posts since 22 Jul, 2006 from Tasmania, Australia

Post Tue Mar 30, 2021 1:11 am

this seems to work so nice Paul ty!
- no issues so far, I'll test more

it has tiny little squeals and the amplitude gate flutters when decaying
please share your creation here ==>
https://www.vguitarforums.com/smf/index.php?board=51.0
if you'd like

I'm finding consistent volume to be a small problem
-the volume seems to swell a little,
I would be happy if there was an option to turn off the dynamics

-is this an open-source project?
I would like to come to understand the pitch-detecting algo intrinsically
I can of course understand if you would rather not disclose
if that's the case, you have a purchaser for your product here in me

KVRer

Topic Starter

6 posts since 25 Mar, 2021

Post Sun Apr 04, 2021 2:15 am

nix808 wrote:
Tue Mar 30, 2021 1:11 am
-is this an open-source project?
I would like to come to understand the pitch-detecting algo intrinsically
I can of course understand if you would rather not disclose
if that's the case, you have a purchaser for your product here in me
tnx for the feedback!
The "amp" has a built-in limiter/compressor with lots of gain, turn the gain down there if you find the sustain to be too wild.
It is not open source, it will be in the appstore for iOS, not sure how to sell the mac/win version.

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