Old 02-04-2010, 01:46 PM   #1
cturner
Human being with feelings
 
cturner's Avatar
 
Join Date: Apr 2009
Location: GWB
Posts: 76
Default Help with resampled rendering?

Hi all-

At this point, just screwing around with a test project that's 24-bit 88.2khz.
I'm able to render a file in that resolution:


But can't get a perfect render when I attempt to downsample to 44.1khz:


If you can imagine the above dialog, it renders correctly for about the first eighth of the selection, then I get DC in the negative amplitude range for the rest of the file.

These are my render settings:


Could anyone tell me what I'm doing wrong, or what to investigate?

Many thanks, Charles

Reaper 3.22, Leopard 10.5.8, Intel Macbook, MOTU Ultralite Hybrid
cturner is offline   Reply With Quote
Old 02-04-2010, 01:49 PM   #2
Dstruct
Human being with feelings
 
Join Date: Jul 2006
Posts: 12,300
Default

Looks more like just peak drawing bug. Does the file play properly (and does it look fine when importing it)?
Dstruct is offline   Reply With Quote
Old 02-04-2010, 02:06 PM   #3
cturner
Human being with feelings
 
cturner's Avatar
 
Join Date: Apr 2009
Location: GWB
Posts: 76
Default

Thanks for your interest, Dstruct-

Sadly, it doesn't. Here's the the two rendered files and the original in Amadeus:



One thing I wonder about: you'll notice that the bottom file, the source file used to create the rendering is silent except for an initial, brief bit of sine wave. Most of the rendering is created by a VST plugin, producing, in effect, a long reverb tail.

(The successful 88.2 rendering is at top, and the unsuccessful 44.1 resampled rendering is in the middle.)

So I wonder if all the silence accounts for the weird resampling? If so, I should be able to successfully render active audio data, and be able to re-produce my issue with just about any reverb VST set to echo for a while...

Best, Charles

Last edited by cturner; 02-04-2010 at 05:23 PM.
cturner is offline   Reply With Quote
Reply

Thread Tools
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


All times are GMT -7. The time now is 06:12 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.