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  2. ATSC standards - Wikipedia

    en.wikipedia.org/wiki/ATSC_standards

    ATSC supports 5.1-channel surround sound using Dolby Digital's AC-3 format. Numerous auxiliary datacasting services can also be provided. Many aspects of ATSC were patented, including elements of the MPEG video coding, the AC-3 audio coding, and the 8VSB modulation. [2]

  3. Comparison of audio coding formats - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_audio_coding...

    Dolby Laboratories: 1992 ATSC A52:2018 Free DVD players, digital television, Camcorder: FFmpeg, liba52 (decoding only), Aften (encoding only), libavc (2.0 channels max) Theatrical movie presentation, Digital TV service & home-video (personal recorders, DVD, etc.) No No No No ? AC-4: Dolby Laboratories: 2014 ATSC A342:2022-03 Non-free

  4. Dolby Pro Logic - Wikipedia

    en.wikipedia.org/wiki/Dolby_Pro_Logic

    Although Dolby Surround was introduced as an analog format, all Dolby Digital decoders incorporate a digitally implemented Dolby Surround Pro Logic decoder for digital stereo signals that carry matrix-encoded Dolby Surround. One of the first was the MSP400 surround sound receiver and amplifier by RCA for their high-end Dimensia brand.

  5. Matrix decoder - Wikipedia

    en.wikipedia.org/wiki/Matrix_decoder

    Dolby Stereo and Dolby Surround are also known as Dolby MP, Dolby SVA and Pro Logic. Dolby SVA matrix is the original name of the Dolby Stereo 4:2:4 encoding matrix. The term "Dolby Surround" refers to both the encoding and decoding in the home environment, while in the theater it is known "Dolby Stereo", "Dolby Motion Picture matrix" or "Dolby ...

  6. Dolby Digital - Wikipedia

    en.wikipedia.org/wiki/Dolby_Digital

    The theater version of Dolby Digital Surround EX was introduced in 1999, when Dolby and THX, a division of Lucasfilm Ltd., co-developed Dolby Digital Surround EX™ for the release of Star Wars: Episode I – The Phantom Menace. [21] [26] Dolby Digital Surround EX has since been used on the DVD releases of the Star Wars prequel and original ...

  7. Dolby - Wikipedia

    en.wikipedia.org/wiki/Dolby

    Dolby Surround, Dolby Pro Logic, Dolby Pro Logic II, Dolby Pro Logic IIx, and Dolby Pro Logic IIz: these decoders expand sound to a greater number of channels. All can decode surround sound that has been matrixed into two channels; some can expand surround sound to a greater number of speakers than the original source material.