Digital Distortion ?

djidoe

Inspired
Hi, here as soundcloud file a .mp3 I just record it using SPDIF to my M-Audio Profire 2626. Could you notice the digital distortion at the end of the mp3 file (decay at 4-5 sec) ?

Digital Distrtion ? by Jeff Dolan 2 on SoundCloud - Create, record and share your sounds for free


I'm using the Brit Pre amp with the Factory 34 Cab. Everything on the preset at default value, except I put the drive at 2.75 and lower the volume of the patch of 10db. I'm also using a Les Paul.

Is it normal ?


FW 9.01
No Axe-Edit
 
I couldn't hear it with that clip. Maybe my ears are not that sensitive but why don't you try recording direct from the Axe's USB? Maybe the problem is coming from the M-audio.
 
Maybe I'm not using the right words... there is absolutely crackling occuring between 4 and 5 second. It's like digital crackling on its decay.
 
Maybe I'm not using the right words... there is absolutely crackling occuring between 4 and 5 second. It's like digital crackling on its decay.

That's crossover distortion and amps do it too. It's not 'digital' distortion.
 
Ok thanx Scott, is it possible to eliminate that crossover distortion ? Also, what cause crossover distortion ?

Many thanx Scott.
 
i hear what you are refering to and it does sound like a digital clip, sort of. try cab 35 a little less clear with that one.
 
Ok thanx Scott, is it possible to eliminate that crossover distortion ? Also, what cause crossover distortion ?

Many thanx Scott.

Amps do it. Google it; tons of information on it. Without it; things sound sterile. If you want it gone in the Axe-FX II, turn up the power amp bias. You'll notice that it sounds bland and won't cut well in a mix with real amps.

http://en.wikipedia.org/wiki/Crossover_distortion
http://www.aikenamps.com/CrossoverDistortion.htm
http://www.electronics-tutorials.ws/amplifier/amp_7.html

and so on. Google has a ton of information.

Try to record the same thing USB to ensure you aren't clipping.
 
I will echo what Scott said and add:

You should be able to minimize it by turning powertube bias up, triode hardness up, and preamp bias down.
 
sounds normal to me...

the first half has more drive in the high end because initially the high freqs will have more energy..
and the chord continues to sustain this high-freq energy lessens and with it that high freq drive..

try recording your guitar playing the same chord 100% dry and you'll ever so slightly hear that as the chords sounds, it's like the very high treble is dissipating..
it's this very high treble that the amp's drive is 'getting hold of' with the distorted tone...

go to a hi-gain tone, play a power chord and leave it to sustain...
you'll hear this effect even more but it tales a lot longer for the highs to fall away [because there's a lot more compression going on in that type of tone] and just the low end to remain and eventually fade away...
 
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