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rymo

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Join date
19-Oct-2017
Last activity
19-Feb-2019
Posts
12

Post History

Post
#1266897
Topic
STAR WARS Trilogy SE DTS Discs
Time

Sorry if these have already been posted here, but I thought it might be worth mentioning. There is a full set of 1997 cinema DTS discs for A New Hope SE, The Empire Strikes Back SE, and Return of the Jedi SE currently for sale on eBay. Buy it Now price is $700 (or best offer).

https://www.ebay.com/itm/STAR-WARS-Trilogy-SE-97-Officially-Issued-Theater-Projector-DTS-Audio-Discs-RARE/303019141385?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160908105057%26meid%3D25b5cd4d015544a8a42e0a8693abac13%26pid%3D100675%26rk%3D6%26rkt%3D15%26sd%3D192801344414%26itm%3D303019141385&_trksid=p2481888.c100675.m4236&_trkparms=pageci%3A35f11840-23e0-11e9-afc4-74dbd1803961|parentrq%3A9a5f16b01680ac3db8c92487ffed5c95|iid%3A1

Post
#1120176
Topic
Preserving DTS LaserDisc tracks, specifically Jurassic Park
Time

Just for fun, I put together some sample clips taken from my Jurassic Park theater DTS disc of just the isolated front,surround, and LFE channels. The center channel is muted.

Feeding the Raptors: https://www.youtube.com/watch?v=rvN1qv83Zb4
Dodgson & Nedry: https://www.youtube.com/watch?v=XxAPBMScOig
Gennaro & Rostagno: https://www.youtube.com/watch?v=MAP5k-exux4

Post
#1120130
Topic
Preserving DTS LaserDisc tracks, specifically Jurassic Park
Time

Honestly, one of the coolest things I noticed when listening to the Jurassic Park theater audio tracks was being able to hear the original DTS logo that played before the movie. It brought back memories. I had forgotten about it because it wasn’t included on any of the VHS, DVD, or Blu-Ray releases.

https://www.youtube.com/watch?v=aC27RkbGuoA

Post
#1120129
Topic
Preserving DTS LaserDisc tracks, specifically Jurassic Park
Time

little-endian said:

Ah yeah okay, the channel assignment has to be adjusted. But the biggest leap is that this decoder plugin takes care of the mixing whereas the Winamp plugin puts out the raw 5.0 audio “as is”.

This plugin is so inconspicuous and unadvertised that it took me a while as well to discover it. Good find and very well worth archiving - which I would recommend doing with your DTS CD also. One never knows …

Indeed. I made an ISO of it back when I bought it just in case anything were to ever happen to the original disc.

Post
#1120123
Topic
Preserving DTS LaserDisc tracks, specifically Jurassic Park
Time

little-endian said:

Doesn’t that plugin already output the correct mix including generating the LFE out of the bass part contained in the rear channels? Actually it should be possible to create a FLAC file or other format “on the fly” directly in Foobar as well.

Well, it kind of does. It does output all 6 channels, including the LFE channel, but for my purposes I wanted more than just a single file of all combined channels.

The CD-ROM disc contains PLAYLIST.TXT, DTS.EXE, and a folder called DTS. Inside the DTS folder are 4 files. Each file contains roughly a 20 minute section of audio from the movie. All 6 channels for that 20 minute section of the film are contained in each single file. For example, the file “S1003T6.R1” contains the first 20 minutes of 6-channel audio in the movie, starting from the DTS logo at the start of the movie till about the time the helicopter lands on the island.

https://i.imgur.com/CXTyyKT

The problem is that Foobar couldn’t open those 4 files in their native format on the CD-ROM. The files on the disc didn’t have a recognizable file extension. So, I copied the disc files to my computer and added the .AUD extension to each file. I was then able to open the files and play them back in Foobar. I still wanted to take a look at the individual waveforms themselves, so I used Foobar to convert the .AUD files to .WAV files. Each .WAV file contains all 6 discrete channels, although some of the individual tracks are paired as a L/R stereo track.

Opening each .WAV file in an audio editing app allowed me to separate those paired stereo tracks back into individual mono tracks that I could then pan left or right depending on what the track was. And I could isolate each individual track and listen to them separately, just for fun.

https://i.imgur.com/mIXa7Ls

Post
#1120113
Topic
Preserving DTS LaserDisc tracks, specifically Jurassic Park
Time

little-endian said:

It’s actually quite simple meanwhile thanks to a Foobar plugin available here:

https://sourceforge.net/projects/dvdadecoder/files/foo_input_apt-x100/

So the big challenge isn’t to decode it but to get one’s hands on those DTS CDs in the first place. 😉

Yeah, that’s the software I used to decode the tracks and convert them to a usable format. I then opened the individual tracks in an audio editing app and I was able to isolate and mix the levels of each track.

https://i.imgur.com/mIXa7Ls

It’s really exciting to be able to listen to the original audio that I would have heard when I saw it in theaters back in 1993.

Post
#1120111
Topic
Preserving DTS LaserDisc tracks, specifically Jurassic Park
Time

Several years ago, I came across one of the original Jurassic Park DTS CD-ROM discs that was used to playback the movie theater audio back in 1993.

https://imgur.com/a/CZjGn

I’ve been trying for years to figure out how to extract the individual 6-track audio files from the disc without having to use the special DTS audio decoding equipment that was installed in movie theaters.

Today, I finally figured out how to extract the individual audio tracks from the DTS CD-ROM. I’ll outline the steps I took if anyone is interested.