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Dolby AC-4 is an audio compression technology developed by Dolby Laboratories. [1] Dolby AC-4 bitstreams can contain audio channels and/or audio objects. [ 1 ] Dolby AC-4 has been adopted by the DVB project and standardized by the ETSI .
The Dolby Laboratories recommendation for dialnorm has the force of law for US Digital Broadcasting, through the FCC's adoption of ATSC A/53 Annex B, section 5.5 Dialogue Level: "The value of the dialnorm parameter in the AC-3 elementary bit stream shall indicate the level of average spoken dialogue within the encoded audio program."
Dolby AC-3 (a backronym for Audio Codec 3, Advanced Codec 3, or Acoustic Coder 3), also known as ATSC A/52 (name of the standard) [18] or simply Dolby Digital (DD), is the common version containing up to six discrete channels of sound. Before 1996 it was marketed as Dolby Surround AC-3, Dolby Stereo Digital, and Dolby SRD. [19]
Not great at dialogue enhancement; $718 at Amazon. Explore More Buying Options. $730 at Walmart $899 at Adorama. Polk Audio. Best surround soundbar ... Dolby Atmos: This rather magical technology ...
Many AV receivers have a center focus or dialog enhancement option that provides options for dialogue reproduction, as well as the overall content mapped to the center and front channels. Common settings include modes that map dialogue strictly to the center channel (to the best ability of the decoder), modes that emphasize vocals for clear ...
Dolby reintroduced the Dolby Surround terminology in 2014. The term now refers to a new frequency-domain decoder/upmixer. Dolby Surround is a complete replacement for Pro Logic; it takes in stereo (discrete or matrixed), 5.1 and 7.1 inputs to play over a wide range of output configurations including those with height channels.
Dolby TrueHD is a lossless, multi-channel audio codec developed by Dolby Laboratories for home video, used principally in Blu-ray Disc and compatible hardware. Dolby TrueHD, along with Dolby Digital Plus (E-AC-3) and Dolby AC-4 , is one of the intended successors to the Dolby Digital (AC-3) lossy surround format.
Matrix decoding is an audio technology where a small number of discrete audio channels (e.g., 2) are decoded into a larger number of channels on play back (e.g., 5). The channels are generally, but not always, arranged for transmission or recording by an encoder, and decoded for playback by a decoder.