Avid Pro Audio Community

Avid Pro Audio Community

How to Join & Post  •  Community Terms of Use  •  Help Us Help You

Knowledge Base Search  •  Community Search  •  Additional Resources


Avid Home Page

Go Back   Avid Pro Audio Community > Legacy Products > 003, Mbox 2, Digi 002, original Mbox, Digi 001 (Mac)

Reply
 
Thread Tools Search this Thread Display Modes
  #11  
Old 07-28-2010, 06:07 AM
therecordinghouse therecordinghouse is offline
Member
 
Join Date: Nov 2005
Location: Fort Wayne, IN.
Posts: 1,094
Default Re: make a bounce on half speed..

slower than real time bounce? man, Avid can't make anyone happy....
__________________
Lynn Graber
Studio and Mobile Recording, Fort Wayne, IN.
Reply With Quote
  #12  
Old 07-28-2010, 07:38 AM
Carl Kolchak Carl Kolchak is offline
Member
 
Join Date: Dec 2004
Location: U.K.
Posts: 2,196
Default Re: make a bounce on half speed..

er????

If you were to record at half speed, when you come to playback it will play twice as fast - think slow motion film :

film speed = 24fps, capture at 75fps and playback at 24fps = motion slowed by 3X.

capture at 75fps and playback at 75fps = normal motion.

capture at 12fps (half speed) and playback at 24fps = motion sped up by 2X.


Your best options are to either:

1. Use the timeshift plugin in the Varispeed mode.

2. Use Elastic Audio in the Varispeed mode.

3. Import the file into a sampler and trigger it at half speed.

4. Change the file header and import without SRC.


Hope that helps.
Reply With Quote
  #13  
Old 07-28-2010, 08:12 AM
daeron80 daeron80 is offline
Member
 
Join Date: Apr 2005
Location: Orlando, Florida, USA
Posts: 3,572
Default Re: make a bounce on half speed..

Carl, you're right about half-speed recording of material coming in through the converters. But the suggestion was made with respect to material that was already recorded. The person who suggested doing it that way obviously hadn't thought it through, and clearly hadn't tried it himself, because it doesn't work, as Ben pointed out. x/2*2=x.
__________________
David J. Finnamore

Nyquist was right.

PT 2018.x HD | Omni | macOS Sierra
PT 2018.x | Saffire Pro 40 | Win10
Reply With Quote
  #14  
Old 07-28-2010, 10:00 AM
Carl Kolchak Carl Kolchak is offline
Member
 
Join Date: Dec 2004
Location: U.K.
Posts: 2,196
Default Re: make a bounce on half speed..

That's ok, I understood that,

which is what I was getting at when I said:

capture at 75fps and playback at 75fps = normal motion.

I probably should have added:

capture at 12fps (half speed) and playback at 12fps (half speed) = normal motion.

Just to hammer the point home


Actually, that reminds me of a technique that Walter Murch developed.

As this problem shows with regard to bussing and bouncing internally, if you play something at half speed and record it at half speed, when you play it back at normal speed it obviously plays at normal speed.

What Walter Murch did was play a 7.5 IPS tape at 15 IPS over speakers in a gymnasium, and record it onto another machine running at 15 IPS.

When you play the tape back at 7.5 IPS the original signal is at its original pitch, but the "space" of the gymnasium has doubled in size.

Cool huh!
Reply With Quote
  #15  
Old 07-28-2010, 12:07 PM
daeron80 daeron80 is offline
Member
 
Join Date: Apr 2005
Location: Orlando, Florida, USA
Posts: 3,572
Default Re: make a bounce on half speed..

Quote:
Originally Posted by Carl Kolchak View Post
What Walter Murch did was play a 7.5 IPS tape at 15 IPS over speakers in a gymnasium, and record it onto another machine running at 15 IPS.

When you play the tape back at 7.5 IPS the original signal is at its original pitch, but the "space" of the gymnasium has doubled in size.

Cool huh!
Very cool idea. In the digital realm, you'd need to capture at double your target sample rate, or you'd lose your top octave.
__________________
David J. Finnamore

Nyquist was right.

PT 2018.x HD | Omni | macOS Sierra
PT 2018.x | Saffire Pro 40 | Win10
Reply With Quote
  #16  
Old 08-02-2010, 07:19 AM
montreal montreal is offline
Member
 
Join Date: Jan 2010
Location: France
Posts: 432
Default Re: make a bounce on half speed..

my question was precisely the one you're asking !! so ? possible to record in while pressing cmd and space bar button or not ?
Reply With Quote
  #17  
Old 08-02-2010, 07:34 AM
daeron80 daeron80 is offline
Member
 
Join Date: Apr 2005
Location: Orlando, Florida, USA
Posts: 3,572
Default Re: make a bounce on half speed..

Quote:
Originally Posted by montreal View Post
possible to record in while pressing cmd and space bar button or not ?
Of course. Then it plays back an octave higher in pitch and twice the speed of the source. Instant chipmunks. You might get some aliasing artifacts, though. Unless the sampling filter drops an octave on half-speed record, which seems unlikely, it would be capturing frequencies that couldn't be represented by the system on normal speed reproduction. It might be wise to feed the source through a steep 10 kHz low pass filter on the way in to clean that up.
__________________
David J. Finnamore

Nyquist was right.

PT 2018.x HD | Omni | macOS Sierra
PT 2018.x | Saffire Pro 40 | Win10
Reply With Quote
  #18  
Old 08-03-2010, 08:04 AM
montreal montreal is offline
Member
 
Join Date: Jan 2010
Location: France
Posts: 432
Default Re: make a bounce on half speed..

hu ? how you do that ?
can you do that thrue a bounce ?
Reply With Quote
  #19  
Old 08-03-2010, 09:12 AM
daeron80 daeron80 is offline
Member
 
Join Date: Apr 2005
Location: Orlando, Florida, USA
Posts: 3,572
Default Re: make a bounce on half speed..

Quote:
Originally Posted by montreal View Post
hu ? how you do that ?
Just hit Shift+Command+Spacebar. Try it.

Quote:
Originally Posted by montreal View Post
can you do that thrue a bounce ?
?? Are we talking about the same thing? It should be obvious that it's not possible to record new material while bouncing down a mix.
__________________
David J. Finnamore

Nyquist was right.

PT 2018.x HD | Omni | macOS Sierra
PT 2018.x | Saffire Pro 40 | Win10
Reply With Quote
  #20  
Old 08-05-2010, 05:32 AM
montreal montreal is offline
Member
 
Join Date: Jan 2010
Location: France
Posts: 432
Default Re: make a bounce on half speed..

god...

i know how to play a selection in half speed by hitting cmd and space bar button at the same time... my question was : can you record it ? and how..
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Can you bounce in Half speed electronicnoise 003, Mbox 2, Digi 002, original Mbox, Digi 001 (Win) 1 10-27-2004 09:43 AM
Bounce at Half Speed torquemada 003, Mbox 2, Digi 002, original Mbox, Digi 001 (Win) 1 09-26-2004 02:21 PM
Bounce to Disk at half speed? SteveGarman Pro Tools TDM Systems (Mac) 3 07-29-2004 08:11 PM
shortcuts for half speed +dbl speed recoring neatguys 003, Mbox 2, Digi 002, original Mbox, Digi 001 (Win) 4 11-09-2003 03:48 PM
Can you bounce to disk at half speed? LATablette 003, Mbox 2, Digi 002, original Mbox, Digi 001 (Win) 8 11-21-2002 09:34 PM


All times are GMT -7. The time now is 03:33 AM.


Powered by: vBulletin, Copyright ©2000 - 2008, Jelsoft Enterprises Limited. Forum Hosted By: URLJet.com