Film-Tech Forum ARCHIVE: Dolby Cat 69P v. 151B

This is topic Dolby Cat 69P v. 151B - Operational Difference? in forum Film Handlers' Forum at Film-Tech Forum ARCHIVE.

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Posted by David E. Nedrow (Member # 4981) on 11-23-2010, 04:17 PM:

OK, I've read the tech info re: Cat 151B, but am still not quite sure if it can be used interchangeably with 69P for setting front and surround levels.

Any guidance would be appreciated, before I spend my $75. [Wink]

-David

Posted by Sam D. Chavez (Member # 1841) on 11-23-2010, 07:47 PM:

These are two different test films. 69 is 50% modulation stereo in phase pink noise.

151 is in phase, out of phase bursts of pink noise to test the Surround decoder card and subjective evaluation of delay setting.

Posted by David E. Nedrow (Member # 4981) on 11-23-2010, 09:26 PM:

OK, cool.

Thanks for the info.