PQ coding?

I recently downloaded Audacity on my Mac, and it’s great - editing easy and all that. But I’m trying to prepare a master for vinyl, and I need to use PQ coding to separate the tracks (or something like that, according to the pressing plant.) How do I do this, or how do I submit a ready-to-be-mastered continuous WAV file. I can make the WAV file no problems, but what else do I need?

Thanks in advance!

PQ code is part of the sub-channel data of a CD. https://en.wikipedia.org/wiki/Compact_Disc_subcode

Yes, but I how to do I add it to a continuous WAV file on Audacity.

WAV (and AIFF) is a specific type of RIFF format https://en.wikipedia.org/wiki/Resource_Interchange_File_Format.
Th RIFF format definition has no mention of “PQ code”.

PQ code are two channels of the subcode on a CD https://en.wikipedia.org/wiki/Compact_Disc_subcode

I don’t see what PQ code has to do either with WAV format or Vinyl pressing.

Perhaps they want the start/stop times of the tracks to be added to the WAV file as metadata, or perhaps they just want you to give them a track listing that includes track start and stop times. I’d suggest that you either go back to them and ask them for clarification about what they require, or you go to a company that is more helpful.

I can see where some method must be found to tell the lathe to make different pitch tracks between songs. That’s the visual clue where to drop the needle when you want to start at the beginning of a song.

Given “doing it manually” is a nasty word in business (I’m sure that’s how it used to be done), how else would you do it?

Koz