distortion in kerovee

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mickwest1
KVRist
180 posts since 19 May, 2009 from UK

Post Wed Dec 05, 2012 4:56 pm

I really like Kerovee - it's a well laid out , easy to figure plugin - and it works really well

however I have/had a problem with distortion (or artefacts as sometimes called) - on the processed signal/s -
the sound can be quite rough - especially on "s's and "f's"

I just found however that this can be improved greatly by reducing the level of the ingoing signal -

what I would like to know is - is this a known problem? - is there a maximum recommended input level? - also does the master volume work on the input or output signal?

Also does anybody have any other recommendations for improving the quality?


Mick
Cheers

Mick

g200kg
KVRist
485 posts since 22 May, 2004 from Yokohama, Japan

Post Thu Dec 06, 2012 4:34 pm

mickwest1 wrote:however I have/had a problem with distortion (or artefacts as sometimes called) - on the processed signal/s -
the sound can be quite rough - especially on "s's and "f's"
hi,
yes, Kerovee may be too sensitive to over-level.
In addition, that also depends on the 'Formant' and 'Pitch' settings. Probably this goes bad when low-formant / high-pitch settings.

currently, I don't have a established recommended level but I would like to do improvement when I have time.

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RunBeerRun
KVRAF
7922 posts since 2 Aug, 2005 from Guitar Land, USA

Post Thu Apr 04, 2013 2:25 pm

The latest build of Kerovee sounds like a sample rate reducer, it sounds really wrong.
The only site for experimental amp sim freeware & MIDI FX: http://runbeerrun.blogspot.com
https://m.youtube.com/channel/UCprNcvVH6aPTehLv8J5xokA -Youtube jams

g200kg
KVRist
485 posts since 22 May, 2004 from Yokohama, Japan

Post Thu Apr 04, 2013 9:25 pm

RunBeerRun wrote:The latest build of Kerovee sounds like a sample rate reducer, it sounds really wrong.
Hello,
hmmm...Is the problem occur regardless of the formant or transpose settings?
Can you send the sample (original) voice because the quality may depends on original voice characteristics.

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RunBeerRun
KVRAF
7922 posts since 2 Aug, 2005 from Guitar Land, USA

Post Fri Apr 05, 2013 3:05 pm

I don't touch the formant stuff, only the scales at the left.

Right now it's loaded in Savihost and squealing, even though there is no input. I don't think it has to do with my voice, but here is a test file I use to test vocal software(wav exported to mp3 because I am on a slow internet connection), it does squeal with as input, also w/live vocals.

I use either a Behringer dynamic mike or a Behringer condensor into an M-Audio Fast Track Pro interface, the previous Kerovee builds all worked normally.

https://www.box.com/s/tfa57ucpckhab85vgg6x
The only site for experimental amp sim freeware & MIDI FX: http://runbeerrun.blogspot.com
https://m.youtube.com/channel/UCprNcvVH6aPTehLv8J5xokA -Youtube jams

g200kg
KVRist
485 posts since 22 May, 2004 from Yokohama, Japan

Post Fri Apr 05, 2013 7:49 pm

RunBeerRun wrote:I don't touch the formant stuff, only the scales at the left.

Right now it's loaded in Savihost and squealing, even though there is no input. I don't think it has to do with my voice, but here is a test file I use to test vocal software(wav exported to mp3 because I am on a slow internet connection), it does squeal with as input, also w/live vocals.

I use either a Behringer dynamic mike or a Behringer condensor into an M-Audio Fast Track Pro interface, the previous Kerovee builds all worked normally.

https://www.box.com/s/tfa57ucpckhab85vgg6x
Thank you :)
It is great help of investigation.

I think the squealing is caused by very low freq noises. It seems be a side effect of my parameter tuning for pitch stability. tentatively, it will be improved if I cutoff under 80Hz (even it is not yet perfect).

anyway, I need a little more time for investigation and improvement.
Thank you

g200kg
KVRist
485 posts since 22 May, 2004 from Yokohama, Japan

Post Fri Apr 05, 2013 11:22 pm

Hello,
I have updated KeroVee (and RoVee)

KeroVee 1.61
http://www.g200kg.com/en/software/kerovee.html
* Fix squealing when low freq noise input.

RoVee 1.21
http://www.g200kg.com/en/software/rovee.html
* Fixed: value editing from keyboard is not functional
* Fine adjustment of noise suppressing

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U-o
KVRian
1120 posts since 16 Nov, 2011 from Czechia

Post Sat Apr 06, 2013 12:13 am

Thank you, sir. :wink:
FL Studio Producer Edition
+ Native Plugin Effects, AudioThing Frostbite + Valves, Camel Crusher, Klanghelm IVGI2, Sonic Anomaly Transpire, Tritik Krush, Valhalla Vintage Verb
+ Harmless, Zebralette

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maurone dj
KVRist
253 posts since 30 Sep, 2007 from Roma

Post Sat Apr 06, 2013 1:56 am

Thank you :D
God save the Groove!

midiboss
KVRist
51 posts since 23 Mar, 2004

Post Sat Apr 06, 2013 3:00 am

Hi g200kg,

first many thanks for this wonderful tool. Since I use it a lot, I'd just like to know few background info;
Which shifting algorithm is used and is there room for improvement, as one can see Kerovee as a first real and best poor-man's vocal harmony generator (harmonies triggered via midi, of course). Already now results are very good, but you know, we aim at "Tc" quality, but next to free ;)

So, any plans on shifting algorithm and/or intelligent harmony implementation. I wouldn't mind if it becomes nice-price-tagged commercial product with such functionallity...

Midiboss

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RunBeerRun
KVRAF
7922 posts since 2 Aug, 2005 from Guitar Land, USA

Post Sat Apr 06, 2013 5:03 pm

Cool, it seems to be working normally now. I see you can pitch it by scale and MIDI simultaneously now, not sure if that is a new feature.
The only site for experimental amp sim freeware & MIDI FX: http://runbeerrun.blogspot.com
https://m.youtube.com/channel/UCprNcvVH6aPTehLv8J5xokA -Youtube jams

g200kg
KVRist
485 posts since 22 May, 2004 from Yokohama, Japan

Post Sat Apr 06, 2013 9:43 pm

midiboss wrote:Which shifting algorithm is used and is there room for improvement, as one can see Kerovee as a first real and best poor-man's vocal harmony generator (harmonies triggered via midi, of course). Already now results are very good, but you know, we aim at "Tc" quality, but next to free ;)

So, any plans on shifting algorithm and/or intelligent harmony implementation. I wouldn't mind if it becomes nice-price-tagged commercial product with such functionallity...
Hi,

I am utilizing one of a kind time-domain processing for shifting. That has a characteristics of very clear formant tweaking but I know that may not generate best quality in some cases.

Though I have no plan of replacing shifting engine currently, I think that might be improvable by some kind of STFT based shifting. Anyway it will takes certain amount of time.

Eine Alte Oma
KVRer
9 posts since 5 Sep, 2018

Re: distortion in kerovee

Post Sat Oct 12, 2019 10:26 am

i know this post is old but i still love kerovee so here's my approach about the distortion if anyone's interested: i just cut off the highend a lot and use the dry highend in parallel. that way it feels much cleaner and not too untuned as well

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