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DC Offset with BD => Version 1.5.1

Posted: Thu Sep 27, 2012 12:59 pm
by uber909
Hi everyone 8)

I have a DC offset issue with the BD (version 1.5.1).
Capture d’écran 2012-09-27 à 18.27.30.jpg
Capture d’écran 2012-09-27 à 18.27.30.jpg (158.72 KiB) Viewed 16833 times
Tried many settings, still the same issue (Running Logic 9, MBP C2D 2,4 Ghz, RAM 6GB).
It take huge proportions in a mix
Capture d’écran 2012-09-27 à 18.52.11.jpg
Capture d’écran 2012-09-27 à 18.52.11.jpg (201.53 KiB) Viewed 16833 times
Any idea someone ?

THX

Re: DC Offset with BD => Version 1.5.1

Posted: Fri Sep 28, 2012 9:24 am
by Sebastian@d16
Hi,

Do you mean real DC offset? Because on those pictures i barely can see it. Or do you mean the asymmetry in X axis?

Thank you,

Best regards,
Sebastian

Re: DC Offset with BD => Version 1.5.1

Posted: Fri Sep 28, 2012 9:28 am
by Sebastian@d16
.. also you mentioned version 1.5.1, does it mean that this phenomenon does not take place in previous releases? Have you compared them maybe?

Thank you.
/Sebastian

Re: DC Offset with BD => Version 1.5.1

Posted: Tue Oct 02, 2012 8:55 am
by uber909
Hi Sebastian,

I mean asymmetry in the X axis.
Also, I do not remember anything like that in version 1.4.4.

If it's useful, I can make a screen capture of my BD settings. It happens with several settings, though (Native 909, for example).

Thx,
Greg

Re: DC Offset with BD => Version 1.5.1

Posted: Thu Oct 04, 2012 9:10 am
by Sebastian@d16
Hi Greg,

If you meant asymmetry you don't have to worry about. It's just one of the properties of raw 909 BD sound. In real 909, one of the components in BD generator is a hipass filter that removes DC offset, but due to instability of that filter one of the side effects is causing the whole Bass Drum sound being a bit asymmetrical. The click (asymmetrical) that appears on the beginning of the BD sound excites the hipass filter, which when processes compete BD sound (click + body) to remove DC offset also causes asymmetry of the BD body in amplitude domain. This is exactly how BD works in real TR-909.

Best regards,
Sebastian

Re: DC Offset with BD => Version 1.5.1

Posted: Thu Oct 04, 2012 9:12 am
by Sebastian@d16
After consulting with our DSP guy i must admit that in the very first version of Drumazon that behavior didn't occur in BD, but after some complains from the purists and 909 experts we decided to emulate it and implement within one of the first updates.

Re: DC Offset with BD => Version 1.5.1

Posted: Tue Jan 22, 2013 9:52 am
by s-tek
Sebastian@d16 wrote:After consulting with our DSP guy i must admit that in the very first version of Drumazon that behavior didn't occur in BD, but after some complains from the purists and 909 experts we decided to emulate it and implement within one of the first updates.
and thats good! ;)

you get the same result in near each analogue drum and also in newer ones like jomox or mfb. and thats a bit of funkyness in the machines :D

a great feature would be also a natural random shuffle or unthigtness like all other analogue gear.