DOLBY E is an audio encoding/decoding technology that allows up to 8 channels of discrete audio to be compressed on to only 2 audio tracks. Typically it's used to embed a 5.1 surround and a stereo mix on to a tape master.
Lately we've been working with various audio post houses to take their final show mixes and an add a descriptive video (DV) recording done by us. At PPD we encode to DOLBY E and deliver HDCAM broadcast masters with the surround and DV stereo mix. We put this on tracks 3 & 4 of the tape and then the standard non-encoded stereo mix on tracks 1 & 2.
Producers who are confused by all the HD delivery specifications sent to them by Broadcasters or Distributors can call us to help them cut through the techno-babble and do things faster and cheaper.