- The Origins of Sound Qualities courses are based on this 400 page interactive PDF - Zoomable, high resolution color images and embedded videos - Embedded click-to-play, 16 bit 44.1kHz, WAV audio clips cover all the components in the signal path including the musicianship - Discover what it takes to get the recordings you’re going for A/B Educational Resources are now available at SteveCarr.com Free Examination Copy A/B affiliate program FollowFollowFollowFollow