Dolby® E is a scalable production and contribution bitstream for delivering up to 8 channels of up to eight programmes in professional infrastructures (studio, broadcast). Every programme can have its own metadata. Metadata are compatible to DD or DD+ but contain additional information. When transcoding Dolby E to DD or DD+ metadata are adapted accordingly. Unlike some other Dolby technologies, the Dolby E signal never reaches your home viewer. Rather, it’s decoded back to baseband audio just prior to the final transmission and then reencoded into the final audio format—Dolby Digital, for example, or Dolby Digital Plus™.

Specifications:

• Audio coding algorithm:Dolby E
• Dolby E program configurations (user selectable):5.1; 3×2; 5.1+1+1; 6×1; .1+2; 8×1; 4×2; others selectable
• Audio sampling rate:48 kHz
• Video frame rates:29.97 fps (NTSC); 25 fps (PAL); 23.98, 24, 30 fps (requires DP579 Dolby E Tri-Level Sync Interface)
• Frequency response:20 Hz to 20 kHz, ±0.25 dB
• Distortion:110 dB
• Delay:Encoding: fixed, one video frame; PCM delay channel: fixed, one video frame

Source: Dolby® E Specifications