What are PQ Subcodes in MasterList CD?
All audio CDs have 8 channels of subcode data that are interleaved with the digital audio data. The channels are named P, Q, R, S,T, U, V and W. In audio CDs, only channels P and Q are used by the CD player. The information in the P channel tells the CD player when songs are playing and when they are not. The information in the Q channel is much more comprehensive, describing track and disc running times, copy protection and emphasis information, disc catalog code and song identification codes, etc.
When you need help, Sweetwater has the answers!
Our knowledge base contains over 28,000 expertly written tech articles that will give you answers and help you get the most out of your gear. Our pro musicians and gear experts update content daily to keep you informed and on your way. Best of all, it’s totally FREE, and it’s just another reason that you get more at Sweetwater.com.
