Plug-ins, Hosts, Apps,
Hardware, Soundware
Developers
(Brands)
Videos Groups
Whats's in?
Banks & Patches
Download & Upload
Music Search
KVR
   
KVR Forum » Sound Design
Thread Read
Why is there this DC Offset in "Levels"?
Atomisk
KVRist
- profile
- pm
PostPosted: Wed May 09, 2012 5:11 am reply with quote
Ok, so we've all heard levels. We all know how it goes. This picture is a screenshot of the waveform centered around ~1:00, when the song breakds down momentarily before the lead comes in (you can see it on the right side of the pic). Does anyone know why there's such a massive DC offset from that pad/riser/synth thing that peaks during the middle of the pic? Is it just the synthesizer (seems pretty odd... It totally kills the headroom of the track.) Is this some crazy alien mixing concept. I've always wondered why the waveform looks like this whenever I see the waveform in Traktor or a DAW. Any input? :\

PS: I'm not trying to recreate this or anything. I'm just really curious as to why it looks so weird in the waveform. I've never seen anything like it in any other song.

^ Joined: 30 Nov 2010  Member: #244596  
quayquay17
KVRian
- profile
- pm
PostPosted: Wed May 09, 2012 7:38 pm reply with quote
I'm interested as well.
My assumption is it's the result of slamming the breakdown into a maximizing plugin, which is why the peaks stay similar while the content drifts so much.

But I am not certain, we need someone who has had this happen before!
----
I run a netlabel http://oligopolistrecords.bandcamp.com
Free chill, hip-hop, lo-fi, ambient, experimental, for you! (Send me demos too!)
^ Joined: 17 Apr 2009  Member: #205576  Location: portland oregon
Bronto Scorpio
KVRAF
- profile
- pm
- e-mail
PostPosted: Wed May 09, 2012 7:45 pm reply with quote
I don't know the track but I guess there is just some very low (inaudible) sound going on.
Send the whole thing through a high pass filter with a cutoff freq of ~20hz and it should be "fixed".

The low sound doesn't do any audible things to the track by the way (it does eat up headroom though).
And there is no DC offset, the waveform is perfectly centered.

Cheers
Dennis
----
Back from the dead - Sorry if I didn't answer your mails/PM/whatever during the last few months. I hope everything will be back to normal soon. Life can take some shitty turns sometimes.
^ Joined: 13 Feb 2006  Member: #98170  Location: Wiesmoor, Germany
Codehook
KVRist
- profile
- pm
- www
PostPosted: Thu May 10, 2012 9:14 am reply with quote
Bronto Scorpio wrote:
I don't know the track but I guess there is just some very low (inaudible) sound going on.
Send the whole thing through a high pass filter with a cutoff freq of ~20hz and it should be "fixed".

The low sound doesn't do any audible things to the track by the way (it does eat up headroom though).
And there is no DC offset, the waveform is perfectly centered.

Cheers
Dennis

Confirmed, if you filter out below around 20hz then the waveform looks like it sounds...side-chained pad at a consistent volume.

And yes, this isn't DC offset at all, the waveform is perfectly centered as Dennis said. It's just that the sub-audible content distorts the waveform, causing less headroom...although headroom isn't a problem at this point in the track as everything is so quiet anyway.

Interesting spot though, I would never have thought to notice this.
^ Joined: 12 Jun 2009  Member: #209275  
Atomisk
KVRist
- profile
- pm
PostPosted: Thu May 10, 2012 6:16 pm reply with quote
Thanks for the input guys. What I meant by "DC Offset" was that the waveform was just jumping around so much.

I'm aware that running it through a hpf will fix the waveform, and I know that it's way too low to be audible, I was just wondering why it's there. I've been thinking that it might be something to do with the synthesizer patch... but I guess it could just as easily be a maximizing plugin.
^ Joined: 30 Nov 2010  Member: #244596  
Codehook
KVRist
- profile
- pm
- www
PostPosted: Thu May 10, 2012 7:06 pm reply with quote
Atomisk wrote:
Thanks for the input guys. What I meant by "DC Offset" was that the waveform was just jumping around so much.

I'm aware that running it through a hpf will fix the waveform, and I know that it's way too low to be audible, I was just wondering why it's there. I've been thinking that it might be something to do with the synthesizer patch... but I guess it could just as easily be a maximizing plugin.

Ah I get where your question was coming from now.

It's from the sub downlifter he has going on at that point. You can hear it (might be better to listen in headphones), it's a 'boom' that just keeps decreasing in frequency, probably custom made if he hasn't filtered it out when it gets that low in frequency. Although I'm not sure if the Vengeance packs (and similar) have booms that go that deep. They may do, especially if they contain higher frequencies that are still audible even when the lowest bass regions aren't.
^ Joined: 12 Jun 2009  Member: #209275  
BertKoor
KVRAF
- profile
- pm
PostPosted: Fri May 11, 2012 1:23 am reply with quote
Synth patches based on block waves with the pulse width other than 50% will have more energy on either side of the line. Shrug
----
We are the KVR collective. Resistance is futile. You will be assimilated.
My MusicCalc is back online!!
^ Joined: 08 Mar 2005  Member: #60794  Location: Utrecht, Holland
All times are GMT - 8 Hours

Printable version
Page 1 of 1
Display posts from previous:   
ReplyNew TopicPrevious TopicNext Topic
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
Username: Password:  
KVR Developer Challenge 2012