Film-Tech Forum ARCHIVE: Sine wave sweep DCP

This is topic Sine wave sweep DCP in forum Digital Cinema Forum at Film-Tech Forum ARCHIVE.

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Posted by Steve Guttag (Member # 268) on 06-23-2016, 01:58 PM:

Has anyone made a DCP test file that will do a sweep test on each audio channel? Once upon a time we had Dolby's Jiffy test that would do a decent job of showing up speaker problems as well as rattles but I don't think such a thing has been properly ported over to DCP yet.

Posted by Stephan Shelley (Member # 8587) on 06-23-2016, 02:31 PM:

Dolby has 7.1 sweeps for each channel on their site.

Edit:

To be clear 1 DCP that runs swweps through all channels one at a time. Can be used for 5.1 you just don't get sound on the back surrounds.

Posted by Dave Macaulay (Member # 813) on 06-23-2016, 02:41 PM:

I use the "trick-17" test dcp but I don't know where one can find it now. the site I used, free-dcp.net I think, has gone dark.

Posted by Pete Naples (Member # 761) on 06-23-2016, 04:55 PM:

There is a DCP of good old Jiffy knocking about, I don't think it's "official".

It doesn't have any picture tests, purely audio. IIRC the wow and flutter section is omitted understandably.

Posted by Jim Cassedy (Member # 4115) on 06-23-2016, 06:14 PM:

quote:
Dolby has 7.1 sweeps for each channel on their site.
.... Can be used for 5.1 you just don't get sound on the back surrounds.

Dolby had both 7.1 AND 5.1 sweep DCP's on their site last time I looked.

Posted by Mark Gulbrandsen (Member # 72) on 06-23-2016, 07:25 PM:

GDC servers come with audio test clips on every server. One is just channel ID using pink noise though.

Posted by Steve Guttag (Member # 268) on 06-23-2016, 09:27 PM:

Yup, found the Dolby sweep tests...never noticed them before.

Wow Mark, GDC does? Dolby does too! Both ID and PN as well as 1.85 and 2.39 image sizes. [Roll Eyes]

Posted by Pete Naples (Member # 761) on 06-24-2016, 09:14 AM:

Steve, did you get my pm?

Posted by Steve Guttag (Member # 268) on 06-24-2016, 01:28 PM:

yup...thanks