NG2 modular bug, noise with reverb/delays and polyphonia

filtr0

OS synth > original one, i havent updated it

OS in PC > windows xp pro

OS editor > version 1.40

description of the problem

im getting a very loud noise when i use some patches, usually the white noise is caused by the combination of either a reverb and delay, or sometimes when the patch is in polyphonic mode. the noise stops usually when i either turn both the delay and reverb or when i turn off the polyphonic mode

example patch

i cannot reall upload one, because these even happens in some of the factory presets of the ng2 patch bank. it also happens on some other patches i downloaded.

im trying right to update the usb driver and synth os, hopefully its not a hardware problem...

please if someone knows about this or anything similar please contact me

Blue Hell · Posted: Sun Jun 14, 2009 6:26 pm Post subject:

Hmm .. still an example patch might be helpful here ... it could be a bug, or something odly patched ... hardly imaginable that it would be hardware problem with the synth.

Chrono · Posted: Tue Jun 23, 2009 6:39 am Post subject:

i have the same, i believe its the input wich is too loud. the verber clips or something. Not really sure tough. You can also hear noise if you use a lowpass filter before a custom chorus on low cutoff frequencies.

I solved a little of that by using a custom chorus in the polyfonic section right after the osc's and route the rest in stereo. wich costs double filters but then there is no noise in the lower frequencies.

jksuperstar · Posted: Tue Jun 23, 2009 8:37 am Post subject:

I'm with Jan, there must be some example patch by now? If anyone needs help using the "Add Attachment" button below text editing window, let us know.

Chrono · Posted: Fri Jun 26, 2009 9:45 am Post subject:

Ive made some examples Smile

hope you can help with the issues.

Just use the filter cutoff in the noizy patch, and the Level Add with the Filter After patch.

i will try make a faulty reverb one as well, the thing i noticed with that , is that the Reverb has a random input overload or something. I dont know what it couses.

ChorusFilterError.mp3

Description:

This fragment has the unwanted noise comming from the quad delay in the patch.

Download

Filename:

ChorusFilterError.mp3

Filesize:

445.84 KB

Downloaded:

68 Time(s)

ChorusFilterAfter.mp3

Description:

This one has the Filter after the QuadDelay in Stereo and you can hear the difference , but still some distortion is noticable on the lowest frequencies.

Download

Filename:

ChorusFilterAfter.mp3

Filesize:

276.86 KB

Downloaded:

76 Time(s)

ChorusLoFilter.pch2

Description:

the noizy patch

Download

Filename:

ChorusLoFilter.pch2

Filesize:

1.59 KB

Downloaded:

269 Time(s)

ChorusLoFilterAfter.pch2

Description:

Filter After patch

Download

Filename:

ChorusLoFilterAfter.pch2

Filesize:

1.86 KB

Downloaded:

290 Time(s)

varice · Posted: Sat Jun 27, 2009 3:25 pm Post subject: mixer level is too high

Chrono,

Looks like you have the patch level mixed too high which is causing clipping distortion on the main audio output bus. Try reducing the Master level of the stereo mixer module until there is no more distortion. Keep in mind that the output level meter in the VA section only shows the signal level of one voice, not the sum of all voices in a polyphonic patch.

Also, I have noticed that is very easy to overload the Reverb module. I usually just reduce the signal level on the module input to prevent clipping distortion.

Chrono · Posted: Sun Jun 28, 2009 5:19 am Post subject:

thanks i will try fix it Smile

Chrono · Posted: Wed Aug 05, 2009 6:29 am Post subject:

i've been balancing a lot with the volume clipping issue. It seems it needs a very subtle configuration on both nord and soundcard input. Also, a maximizer in cubase can fix unwanted clipping even tough it seems its not distorting through the cubase mixer at all.

cheers