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Dolby Digital Plus, the Glossary

Index Dolby Digital Plus

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

Table of Contents

  1. 25 relations: Advanced Television Systems Committee, AES3, 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, Dolby Atmos, Dolby Digital, Dolby E, Dolby Pro Logic, DTS (company), ETSI, HD DVD, Modified discrete cosine transform, Psychoacoustics, Pulse-code modulation, S/PDIF, Vector quantization.

  2. Dolby Laboratories

Advanced Television Systems Committee

The Advanced Television Systems Committee (ATSC) is an international nonprofit organization developing technical standards for digital terrestrial television and data broadcasting. Dolby Digital Plus and Advanced Television Systems Committee are High-definition television.

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AES3

AES3 is a standard for the exchange of digital audio signals between professional audio devices. Dolby Digital Plus and AES3 are digital audio.

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Audio mixing (recorded music)

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

See Dolby Digital Plus and Audio mixing (recorded music)

Audio signal

An audio signal is a representation of sound, typically using either a changing level of electrical voltage for analog signals, or a series of binary numbers for digital signals.

See Dolby Digital Plus and Audio signal

Backward compatibility

In telecommunications and computing, backward compatibility (or backwards compatibility) is a property of an operating system, software, real-world product, or technology that allows for interoperability with an older legacy system, or with input designed for such a system.

See Dolby Digital Plus and Backward compatibility

Blu-ray

Blu-ray (Blu-ray Disc or BD) is a digital optical disc data storage format designed to supersede the DVD format. Dolby Digital Plus and Blu-ray are High-definition television.

See Dolby Digital Plus and Blu-ray

Coding gain

In coding theory, telecommunications engineering and other 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).

See Dolby Digital Plus and Coding gain

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 digital data.

See Dolby Digital Plus and Cyclic redundancy check

Data compression

In information theory, data compression, source coding, or bit-rate reduction is the process of encoding information using fewer bits than the original representation. Dolby Digital Plus and data compression are digital audio.

See Dolby Digital Plus and Data compression

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.

See Dolby Digital Plus and Data-rate units

Digital television

Digital television (DTV) is the transmission of television signals using digital encoding, in contrast to the earlier analog television technology which used 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.

See Dolby Digital Plus and Discrete cosine transform

Dolby

Dolby Laboratories, Inc. (often shortened to Dolby Labs and known simply as Dolby) is a British-American technology corporation specializing in audio noise reduction, audio encoding/compression, spatial audio, and HDR imaging. Dolby Digital Plus and Dolby are audio codecs, digital audio, Dolby Laboratories and Film sound production.

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Dolby Atmos

Dolby Atmos is a surround sound technology developed by Dolby Laboratories. Dolby Digital Plus and Dolby Atmos are Dolby Laboratories and Film sound production.

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Dolby Digital

Dolby Digital, originally synonymous with Dolby AC-3 (see below), is the name for a family of audio compression technologies developed by Dolby Laboratories. Dolby Digital Plus and Dolby Digital are audio codecs, Dolby Laboratories, Film sound production and High-definition television.

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Dolby E

Dolby E is a lossy audio 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. Dolby Digital Plus and Dolby E are digital audio and Dolby Laboratories.

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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. Dolby Digital Plus and Dolby Pro Logic are Dolby Laboratories and Film sound production.

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DTS (company)

DTS, Inc. (originally Digital Theater Systems) is an American company. Dolby Digital Plus and DTS (company) are audio codecs and Film sound production.

See Dolby Digital Plus and DTS (company)

ETSI

The European Telecommunications Standards Institute (ETSI) is an independent, not-for-profit, standardization organization operating in the field of information and communications.

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HD DVD

HD DVD (short for High Density Digital Versatile Disc) is an obsolete. Dolby Digital Plus and HD DVD are High-definition television.

See Dolby Digital Plus and HD DVD

Modified discrete cosine transform

The modified discrete cosine transform (MDCT) is a 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.

See Dolby Digital Plus and Modified discrete cosine transform

Psychoacoustics

Psychoacoustics is the branch of psychophysics involving the scientific study of sound perception and audiology—how the human auditory system perceives various sounds.

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Pulse-code modulation

Pulse-code modulation (PCM) is a method used to digitally represent analog signals. Dolby Digital Plus and Pulse-code modulation are audio codecs and digital audio.

See Dolby Digital Plus and Pulse-code modulation

S/PDIF

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

See Dolby Digital Plus and S/PDIF

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.

See Dolby Digital Plus and Vector quantization

See also

Dolby Laboratories

References

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

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