Dolby Digital Plus logo Dolby Digital Plus, also known as Enhanced AC-3 (and commonly abbreviated as DD+ or E-AC-3, or EC-3) is a developed by for transport and storage of multi-channel digital audio. It is a successor to (AC-3), also developed by Dolby, and has a number of improvements including support for a wider range of data rates (32 Kbit/s to 6144 Kbit/s), increased channel count and multi-program support (via substreams), and additional tools (algorithms) for representing compressed data and counteracting artifacts. While Dolby Digital (AC-3) supports up to 5 full-bandwidth at a maximum bitrate of 640 Kbit/s, E-AC-3 supports up to 15 full-bandwidth audio channels at a maximum bitrate of 6.144. The full set of technical specifications for E-AC-3 (and AC-3) are standardized and published in Annex E of A/52:2012, as well as Annex E of TS 102 366 V1.2.1 (2008–08), published by the.

Dolby Digital is the name for audio compression technologies developed by Dolby. Download Air Phone Users Manual here. Die Siedler 3 Amazonen No Cd Crack on this page. AC-3 supports audio sample-rates up to 48 kHz. This format has different.

Contents • • • • • • • • • • • • • • • • • • • • • • Technical details [ ] Specifications [ ] Dolby Digital Plus is capable of the following: • Coded Bitrate: 0.032 to 6.144 Mbit/s • Audio Channels: 1.0 to 13.1 (i.e. From mono to 13 full range channels and a low frequency effects channel) • Number of Audio Programs per bitstream: 8 • Sample Rate: 32, 44.1 or 48 kHz • Bit Depth: up to 24 bits per channel. Structure [ ] A Dolby Digital Plus service consists of one or more substreams.

There are three types of substreams: • Independent substreams, which can contain a single 5.1 program. Up to eight independent substreams may be present in a Dolby Digital Plus stream. The channels present in an independent substream are the traditional 5.1 channels: Left (L), Right (R), Center (C), Left Surround (Ls), and Right Surround (Rs) channels, as well as a Low Frequency Effects (Lfe) channel.

• Legacy substreams, which contain a single 5.1 program, and which correspond directly to Dolby Digital content. At most a single legacy substream may be present in a DD+ stream.

• Dependent substreams, which contain additional channels beyond the traditional 5.1 channels. As dependent substreams have the same structure as independent substreams, each dependent substream may contain up to five full-bandwidth channels and one low-frequency channel; however these channels may be assigned to different speaker placements. Metadata in the substream describes the purpose of each included channel. All DD+ streams must contain at least one independent substream or legacy substream, which contains the first (or only) 5.1 channels of the primary audio program.

Additional independent substreams may be used for secondary audio programs such as foreign language soundtracks, commentary, or descriptions/voiceovers for the visually impaired. Dependent substreams may be provided for programs that have additional soundstage channels beyond 5.1. Within each substream, provision is made for encoding five full-bandwidth channels, one low-frequency channel, and one coupling channel. The coupling channels is used for medium-to-high-frequency information which is common to multiple full-bandwidth channels. Its context is mixed in with the other channels in a fashion prescribed by the metadata, it is not reproduced as a discrete channel by the decoder. Amd Athlon 7750 Driver more. Dolby Digital Plus includes comprehensive bitstream metadata for decoder control over output loudness (via dialnorm), downmixing, and reversible dynamic range control (via DRC). Syntax [ ] Dolby Digital Plus is nominally a 16-bit-aligned protocol, though very few fields in the syntax respect any byte or word boundaries.