Peak4

blitter2 · May 30, 2011, 06:35 PM

Hi.

Please at Peak4 peak meter, when peak reaches yellow color (-6db up to 0db) does it mean distorsion?

Or is it a warning that peak is going to get red color soon? (distorsion, exceeded 0db)

Tyrsonswood · May 30, 2011, 06:40 PM

It's a warning...... There shouldn't be any distortion at 0db or anything below.... UNLESS you are overdriving what the signal is going into. (like an internal or external pre-amp stage)

blitter2 · May 30, 2011, 06:42 PM

Thank you Tyrsonswood.

Russ · May 30, 2011, 08:05 PM

BTW: There is 12 dB of headroom in the DSP, so you can temporarily exceed 0 dB without clipping, as long as the signal is brought back down below 0 dB before exiting the DSP.

blitter2 · May 30, 2011, 10:32 PM

Thank you too Russ.

JoshuaChang · May 31, 2011, 06:54 AM

Quote:

Originally Posted by Russ

BTW: There is 12 dB of headroom in the DSP, so you can temporarily exceed 0 dB without clipping, as long as the signal is brought back down below 0 dB before exiting the DSP.

you mean the 67bit accumulator?
but doesn't it refresh every instruction cycle?

Max M. · May 31, 2011, 07:21 AM

Quote:

Originally Posted by JoshuaChang

you mean the 67bit accumulator?

No, not really. The unity gain (i.e. 0dB) in kX DSP is defined as 0.25 (thus you have 12dB of extra headroom).

May 30, 2011, 06:35 PM	#1
blitter2 HardwareHeaven Lover Join Date: Sep 2008 Posts: 196 Rep Power: 26	Peak4 Hi. Please at Peak4 peak meter, when peak reaches yellow color (-6db up to 0db) does it mean distorsion? Or is it a warning that peak is going to get red color soon? (distorsion, exceeded 0db)

May 30, 2011, 06:42 PM	Thread Starter #3
blitter2 HardwareHeaven Lover Join Date: Sep 2008 Posts: 196 Rep Power: 26	Re: Peak4 Thank you Tyrsonswood. Last edited by blitter2; May 30, 2011 at 06:54 PM.

May 30, 2011, 08:05 PM	#4
Russ HardwareHeaven Extreme Member Join Date: Jan 2005 Posts: 5,563 Rep Power: 62	Re: Peak4 BTW: There is 12 dB of headroom in the DSP, so you can temporarily exceed 0 dB without clipping, as long as the signal is brought back down below 0 dB before exiting the DSP.

May 30, 2011, 10:32 PM	Thread Starter #5
blitter2 HardwareHeaven Lover Join Date: Sep 2008 Posts: 196 Rep Power: 26	Re: Peak4 Thank you too Russ.