• Dolby E

    • An audio encoding technology, Dolby E enables broadcasting and postproduction facilities to carry up to eight channels of sound over their existing stereo (two-channel) infrastructures.

    • Dolby E Benefits

      • Support for Eight Channels

        Enables broadcast facilities with a two-channel infrastructure to distribute up to eight channels of audio (a 5.1 surround soundtrack plus two additional tracks)

      • Multichannel Audio for Live Events

        Enables simple contribution of multichannel audio for live events

      • Frame-Accurate Audio

        Provides frame-accurate audio to ensure effortless switching, editing, encoding, and decoding

      • Multiple Encode and Decode

        Allows audio to be repeatedly encoded and decoded throughout the broadcast chain without any discernible loss in quality

      • An Easier Transition to Multichannel Audio

        The demand for high-quality multichannel sound to complement the impressive picture of today's HDTV programming presents challenges if you're a broadcaster whose facilities were built for two-channel audio. Dolby® E makes your transition to multichannel sound easier by giving you the ability to distribute up to eight channels of audio, plus metadata and timecode, via the existing stereo channels (AES/EBU) available on conventional digital videotapes, video servers, communication links, switchers, and routers.

        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™.

        The Dolby E encoding system is ideal for producing and broadcasting live events because it facilitates the contribution of multichannel audio from the event back to the broadcast center. The system has been used in the broadcasting of professional sports, live music events, and awards shows.
 It has also won many awards itself, including a technical Emmy®.

      • Dolby E Preferred Alignment

        Learn about Dolby's recommended approach to ensure error-free editing and switching of Dolby E signals.

      • Broadcast Solutions

        Find hardware and software products to help you deliver what consumers want.

    • Dolby E for Professionals

      The Dolby E encoding system makes it easier for almost any broadcasting or postproduction facility to carry multichannel audio.


      Deliver 5.1 surround sound using your existing infrastructure.

      • Dolby E Specifications

    • Audio coding algorithm

      Dolby E

      Dolby E program configurations (user selectable)

      5.1; 3×2; 5.1+1+1; 6×1; 5.1+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


      <0.01% at 1 kHz; <0.02% at 20 Hz to 20 kHz

      Dynamic range

      >110 dB


      Encoding: fixed, one video frame; PCM delay channel: fixed, one video frame

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