Film-Tech Forum ARCHIVE: sond on memory sticks or cards synced to cine film projectors (large format & 35mm)

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Posted by Matthew Bailey (Member # 601) on 04-02-2009, 09:24 PM:

I have a qusetion & idea being that having the sound for a 35mm or large format feature stored on a memory stick or card synced to a projector besides the mag 35mm full coat audio source. I'm familiar with the problems of missing,lost,damaged or broken DTS discs but having a DTS or other digital audio format on memory sticks or cards synced with the film. For IMAX or other large format or DTS prints, one or more memory sticks or cards such as SD cards for example could be used for sound.

Posted by Monte L Fullmer (Member # 2797) on 04-02-2009, 11:34 PM:

Course, you have to remember that DTS discs are always read ahead and stored into a memory cache then extracted when the right moment comes from the timecode.

Posted by Cameron Glendinning (Member # 3516) on 04-04-2009, 09:16 PM:

Imax 10 years ago was using 3 x cds for non compressed digital sound, at that stage we also use to play 35mm mag sound as a backup. I do not know for sure but I am under the impression they now have a hard drive sound system so SD cards etc are probably very possible.
The only real problem with the cards is that they would be even easier to lose than the current dts cd.

Posted by Rick Raskin (Member # 1561) on 04-05-2009, 09:05 AM:

In addition to the above, memory sticks could be easily overwritten whether intentionally or not.

Posted by Mark Gulbrandsen (Member # 72) on 04-05-2009, 10:07 AM:

Memory can be locked for read only. No reason not to use them for audio except they too would get smashed in the film cans.

A very good example of tapeless/diskless equipment being used is in todays H-D ENG world where tapeless H-D video has been pioneered by Ikegami, in fact leaving Sony in the dust at this... this all happened because for a couple of years Sony wouldn't give Ikegami any Digi-Beta recorders... So Ikegami said ok... we'll do our own and do it better. Sony lost and Ikegami won big time on this. Ikegami Tapeless ENG System

Posted by Rick Raskin (Member # 1561) on 04-07-2009, 02:36 PM:

Yes, you can easily inhibit the write function in software but I don't think that would be acceptable. The way I see it would be to do it in hardware, but in my opinion that would dramatically increase the cost thus negating the practicality.

Posted by Bruce Hansen (Member # 281) on 04-07-2009, 06:58 PM:

Only one memory stick/card would be needed per film, but they would need to be copied, which may take too much time. The CD-ROMS are pressed. Also the cost would be much more. The memory could be reused, but the cost of gathering, shipping, and checking them might be more than buying new ones.