Film-Tech Cinema Systems
Film-Tech Forum ARCHIVE


  
my profile | my password | search | faq & rules | forum home
  next oldest topic   next newest topic
» Film-Tech Forum ARCHIVE   » Operations   » Digital Cinema Forum   » Cinema Sound test

   
Author Topic: Cinema Sound test
Allan Riddelll
Film Handler

Posts: 33
From: msida , malta, europe
Registered: Jan 2009


 - posted 03-03-2016 07:19 AM      Profile for Allan Riddelll   Email Allan Riddelll   Send New Private Message       Edit/Delete Post 
What is the best subjective sound test film to utilise for establishing speaker distortion, especially on the sub. At present am using the Hollywood test film on the Doremi but is there another more reliable that you use regularly ?

 |  IP: Logged

Stephan Shelley
Jedi Master Film Handler

Posts: 854
From: castro valley, CA, usa
Registered: Nov 2014


 - posted 03-03-2016 02:01 PM      Profile for Stephan Shelley   Email Stephan Shelley   Send New Private Message       Edit/Delete Post 
Dolby has channel ID, pink noise and channel sweeps for 5.1 and 7.1 on their customer portal site. They can be useful.

 |  IP: Logged

Dave Macaulay
Film God

Posts: 2321
From: Toronto, Canada
Registered: Apr 2001


 - posted 03-03-2016 05:14 PM      Profile for Dave Macaulay   Email Dave Macaulay   Send New Private Message       Edit/Delete Post 
I use the "trick17" test clip from freedcp - it's got some problems but has pretty good test material. The main problem is that all audio is recorded very hot, at 0dB I think: the sweep is dangerous both to your ears and to speakers (it warns you to play it at "5" or below, do not play at "7"!) and has some annoying aliasing distortion at the very high end of the sweep - don't try to "fix" this distortion. The sub sweep test is quite useful for finding screen frame rattles. The image test stuff can be done better with test patterns IMO. The full system test track is at least something consistent to evaluate the full system.

 |  IP: Logged

Harold Hallikainen
Jedi Master Film Handler

Posts: 906
From: Denver, CO, USA
Registered: Aug 2009


 - posted 03-03-2016 05:52 PM      Profile for Harold Hallikainen   Author's Homepage   Email Harold Hallikainen   Send New Private Message       Edit/Delete Post 
The original poster asked about subjective test, which makes me think of program content. Moving to pink noise, the LSS-100P test content at http://ftp.uslinc.com/?dir=ftp/Products/LSS-100P/Software/TestContent has a variety of DCPs with three and four band limited pink noise on screen channels and full range pink noise on other channels. It also puts up a SMPTE peak white test rectangle on the screen along with text identifying the audio.

Harold

 |  IP: Logged

Annli Com
Expert Film Handler

Posts: 140
From: ShibuPaul-India
Registered: May 2014


 - posted 03-04-2016 08:21 AM      Profile for Annli Com   Author's Homepage   Email Annli Com   Send New Private Message       Edit/Delete Post 
Bewegte Bilder " Trick17 " Best Forever From Fredcpnet.

 |  IP: Logged



All times are Central (GMT -6:00)  
   Close Topic    Move Topic    Delete Topic    next oldest topic   next newest topic
 - Printer-friendly view of this topic
Hop To:



Powered by Infopop Corporation
UBB.classicTM 6.3.1.2

The Film-Tech Forums are designed for various members related to the cinema industry to express their opinions, viewpoints and testimonials on various products, services and events based upon speculation, personal knowledge and factual information through use, therefore all views represented here allow no liability upon the publishers of this web site and the owners of said views assume no liability for any ill will resulting from these postings. The posts made here are for educational as well as entertainment purposes and as such anyone viewing this portion of the website must accept these views as statements of the author of that opinion and agrees to release the authors from any and all liability.

© 1999-2020 Film-Tech Cinema Systems, LLC. All rights reserved.