VO-BB - 2019 Forum Index VO-BB - 2019
Sex, Drugs, and VO! ... and not necessarily in that order.
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Waveforms

 
Post new topic   Reply to topic    VO-BB - 2019 Forum Index -> Gear !
View previous topic :: View next topic  
Author Message
cjringwall



Joined: 14 May 2018
Posts: 6

PostPosted: Fri Jan 18, 2019 11:18 am    Post subject: Waveforms Reply with quote

I've downloaded many .mp3's of the top VO's as reference, and I'm noticing that some of the waveforms have a different appearance. Most of the waveforms I've looked at have the peaks 'above' 0 appear a bit higher than those below. However with some of the talents, the effect is reversed.

I have never seen or heard anyone talk about this - I'm guessing it's something to do with phase, but don't know if it the result of some type of processing. Or maybe it's just not important, but I was curious if anyone could chime in.
Back to top
View user's profile Send private message Visit poster's website
Bish
Triple G


Joined: 22 Nov 2009
Posts: 3401
Location: Lost in the cultural wasteland of Long Island

PostPosted: Fri Jan 18, 2019 11:53 am    Post subject: Reply with quote

I shall be lazy here and post a quote. It's actually something that I researched some time ago. The big take-away is that it's NOT a "DC bias" (for that would be evident on a silent passage).

This asymmetry is due mainly to two things, the first being the relative phase relationships between the fundamental and different harmonic components in a harmonically complex signal. In combining different frequency signals with differing phase relationships, the result is often a distinctly asymmetrical waveform, and that waveform asymmetry often changes and evolves over time, too. That's just what happens when complex related signals are superimposed.

The other element involved in this is that many acoustic sources inherently have a 'positive air pressure bias' because of the way the sound is generated. To talk or sing, we have to breathe out, and to play a trumpet, we have to blow air through the tubing. So, in these examples, there is inherently more energy available for the compression side of the sound wave than there is for the rarefaction side, and that can also contribute to an asymmetrical waveform.

The full article can be found here:
https://www.soundonsound.com/sound-advice/q-why-do-waveforms-sometimes-look-lop-sided
_________________
Bish a.k.a. Bish
Smoke me a kipper... I'll be back for breakfast.
I will not feed the trolls... I will not feed the trolls... I will not feed the trolls... I will not feed the trolls.
Back to top
View user's profile Send private message Send e-mail Visit poster's website
Bruce
Boardmeister


Joined: 06 Jun 2005
Posts: 6679
Location: Portland, OR

PostPosted: Fri Jan 18, 2019 2:07 pm    Post subject: Reply with quote

When you talk about wacky wav forms I think about examples like this recent scratch audio a client sent. It was somewhat thin sounding but I'm thinking it's because of the cheap mic he used. Does that cause weird looking wavs? Heck if I know. Just part of life I guess.



B
_________________
VO-BB Member #38 Enlisted June, 2005

I'm not a Zoo, but over the years I've played one on radio/TV.
Back to top
View user's profile Send private message Send e-mail Visit poster's website
dwpthe3rd
Contributore Level V


Joined: 28 Feb 2010
Posts: 163
Location: Where palm trees meet the pines

PostPosted: Fri Jan 18, 2019 6:33 pm    Post subject: Reply with quote

My experience has been the more bass cut or hi freq boost applied to the audio, the more the wav form migrates above the "center" line.
_________________
If attacked by a mob of clowns go for the juggler.

User Name: dwpthe3rd (a.k.a. Dave Paton)
Back to top
View user's profile Send private message Send e-mail Visit poster's website
Lee Gordon
A Zillion


Joined: 25 Jul 2008
Posts: 6387
Location: West Hartford, CT

PostPosted: Sat Jan 19, 2019 2:27 am    Post subject: Reply with quote

It's a happy little waveform.


_________________
Lee Gordon, O.A.V.
Voice President of the United States
www.leegordonproductions.com
Twitter: @LeeGordonVoice
Back to top
View user's profile Send private message Visit poster's website
cjringwall



Joined: 14 May 2018
Posts: 6

PostPosted: Mon Jan 21, 2019 10:44 am    Post subject: Reply with quote

Thanks for the replies! I loved Bob Ross...still watch his reruns on Hulu, great therapy.
Back to top
View user's profile Send private message Visit poster's website
Karyn OBryant
Club 300


Joined: 23 Jul 2013
Posts: 369
Location: Portlandia-adjacent

PostPosted: Mon Jan 21, 2019 12:38 pm    Post subject: Reply with quote

Oh Bob Ross. We miss him so.
He's just one of my happy little obsessions.
Thanks for the giggle, Lee!
Laugh
_________________
* * * * * * * * * *
Pretending to be other people since 1986.

www.karynobryant.com
Back to top
View user's profile Send private message Send e-mail Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic    VO-BB - 2019 Forum Index -> Gear ! All times are GMT - 7 Hours
Page 1 of 1

 
Jump to:  
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


Powered by phpBB © 2001, 2005 phpBB Group