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Dolby Digital Plus

Index Dolby Digital Plus

Dolby Digital Plus, also known as Enhanced AC-3 (and commonly abbreviated as DD+ or E-AC-3, or EC-3) is a digital audio compression scheme developed by Dolby Labs for transport and storage of multi-channel digital audio. [1]

24 relations: Advanced Television Systems Committee, AES3, ATSC standards, Audio mixing (recorded music), Audio signal, Backward compatibility, Blu-ray, Coding gain, Cyclic redundancy check, Data compression, Data-rate units, Digital television, Discrete cosine transform, Dolby Digital, Dolby E, Dolby Laboratories, Dolby Pro Logic, DTS (sound system), ETSI, HD DVD, Modified discrete cosine transform, Pulse-code modulation, S/PDIF, Vector quantization.

Advanced Television Systems Committee

The Advanced Television Systems Committee (ATSC) is the group, established in 1982, that developed the eponymous ATSC standards for digital television in the United States.

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AES3 (also known as AES/EBU) is a standard for the exchange of digital audio signals between professional audio devices.

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ATSC standards

Advanced Television Systems Committee (ATSC) standards are a set of standards for digital television transmission over terrestrial, cable, and satellite networks.

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Audio mixing (recorded music)

In sound recording and reproduction, audio mixing is the process of combining multitrack recordings into a final mono, stereo or surround sound product.

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Audio signal

An audio signal is a representation of sound, typically as an electrical voltage for analog signals and a binary number for digital signals.

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Backward compatibility

Backward compatibility is a property of a system, product, or technology that allows for interoperability with an older legacy system, or with input designed for such a system, especially in telecommunications and computing.

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Blu-ray or Blu-ray Disc (BD) is a digital optical disc data storage format.

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Coding gain

In coding theory and related engineering problems, coding gain is the measure in the difference between the signal-to-noise ratio (SNR) levels between the uncoded system and coded system required to reach the same bit error rate (BER) levels when used with the error correcting code (ECC).

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Cyclic redundancy check

A cyclic redundancy check (CRC) is an error-detecting code commonly used in digital networks and storage devices to detect accidental changes to raw data.

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Data compression

In signal processing, data compression, source coding, or bit-rate reduction involves encoding information using fewer bits than the original representation.

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Data-rate units

In telecommunications, data-transfer rate is the average number of bits (bitrate), characters or symbols (baudrate), or data blocks per unit time passing through a communication link in a data-transmission system.

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Digital television

Digital television (DTV) is the transmission of television signals, including the sound channel, using digital encoding, in contrast to the earlier television technology, analog television, in which the video and audio are carried by analog signals.

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Discrete cosine transform

A discrete cosine transform (DCT) expresses a finite sequence of data points in terms of a sum of cosine functions oscillating at different frequencies.

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Dolby Digital

Dolby Digital is the name for audio compression technologies developed by Dolby Laboratories.

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Dolby E

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

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Dolby Laboratories

Dolby Laboratories, Inc. (often shortened to Dolby Labs) is a British-American company specializing in audio noise reduction and audio encoding/compression.

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Dolby Pro Logic

Dolby Pro Logic is a surround sound processing technology developed by Dolby Laboratories, designed to decode soundtracks encoded with Dolby Surround.

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DTS (sound system)

DTS (Dedicated To Sound) is a series of multichannel audio technologies owned by Xperi Corporation (formerly known as Digital Theater Systems, Inc.), an American company specializing in digital surround sound formats used for both commercial/theatrical and consumer grade applications.

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The European Telecommunications Standards Institute (ETSI) is an independent, not-for-profit, standardization organization in the telecommunications industry (equipment makers and network operators) in Europe, headquartered in Sophia-Antipolis, France, with worldwide projection.

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HD DVD (short for High Definition Digital Versatile Disc) is a discontinued high-density optical disc format for storing data and playback of high-definition video.

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Modified discrete cosine transform

The modified discrete cosine transform (MDCT) is a lapped transform based on the type-IV discrete cosine transform (DCT-IV), with the additional property of being lapped: it is designed to be performed on consecutive blocks of a larger dataset, where subsequent blocks are overlapped so that the last half of one block coincides with the first half of the next block.

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Pulse-code modulation

Pulse-code modulation (PCM) is a method used to digitally represent sampled analog signals.

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S/PDIF (Sony/Philips Digital Interface) is a type of digital audio interconnect used in consumer audio equipment to output audio over reasonably short distances.

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Vector quantization

Vector quantization (VQ) is a classical quantization technique from signal processing that allows the modeling of probability density functions by the distribution of prototype vectors.

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Redirects here:

DD Plus, DD+, DDPlus, E-AC-3, E-AC3, EAC3, Enhanced AC-3.


[1] https://en.wikipedia.org/wiki/Dolby_Digital_Plus

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