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Dolby E

An audio data compression and decoding technology that allows 6 to 8 channels of audio to be compressed into an AES3 digital audio stream that can be stored as a standard stereo pair of digital audio tracks.

Dolby E is an audio data compression and decoding technology developed by Dolby Laboratories that allows 6 to 8 channels of audio to be compressed into an AES3 digital audio stream that can be stored as a standard stereo pair of digital audio tracks.

Up to six channels, such as a 5.1 mix, can be recorded as 16-bit Dolby E data. However, if more than six channels are required, such as 5.1 plus a stereo LtRt, the AES3 data must be formatted as 20-bit audio. This increases capacity to eight channels.

It is very important to ensure that a Dolby E stream is never played through monitors or headphones without decoding. Undecoded Dolby E data will be converted to analog as full scale (0 dBfs) digital “noise” that can easily damage loudspeakers and/or hearing. Unambiguous media labeling is essential to avoid this.

Dolby E should never reach home viewers, as it is intended for use during post-production when moving multichannel material between production facilities or broadcasters. It is decoded prior to transmission.

Key Terms

aes3 digital audio stream
audio data compression
channels
channels audio
definition
dolby e
dolby e data
dolby laboratories
technology
usage

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Dolby E
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Sources & Credits

Last modified on February 14 2020
Content adapted from Wikipedia
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