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2. 5.1 surround sound - Wikipedia

   en.wikipedia.org/wiki/5.1_surround_sound

   In addition, some DVDs have DTS tracks, with most being 5.1 channel mixes (a few releases, however, have 6.1 "matrixed" or even discrete 6.1 tracks). Blu-ray and digital cinema both have eight-channel capability which can be used to provide either 5.1 or 7.1 surround sound . 7.1 is an extension of 5.1 that uses four surround zones: two at the ...

3. Sony Dynamic Digital Sound - Wikipedia

   en.wikipedia.org/wiki/Sony_Dynamic_Digital_Sound

   Out of the 1,400 plus films mixed in SDDS, only 97 of them to date have been mixed to support the full 8 channels, most of them Sony (Via Sony Pictures/Columbia/Tristar) releases. Because of the added installation expense, the majority of SDDS installations are 6 channel (5.1) installations, as opposed to 8 channel (7.1) installations.

4. Surround sound - Wikipedia

   en.wikipedia.org/wiki/Surround_sound

   7.1 channel surround is another setup, most commonly used in large cinemas, that is compatible with 5.1 surround, though it is not stated in the ITU standards. 7.1 channel surround adds two additional channels, center-left (CL) and center-right (CR) to the 5.1 surround setup, with the speakers situated 15 degrees off center from the listener. [24]

5. Dolby Pro Logic - Wikipedia

   en.wikipedia.org/wiki/Dolby_Pro_Logic

   A Pro Logic decoder also uses 'Steering Logic', which drives amplifiers to raise or lower the output volume of each channel based on the current dominant sound direction. For example, while a mono signal is played, the strong correlation to the center channel triggers the output volume of the left, right and surround channels to be lowered.

6. Super Audio CD - Wikipedia

   en.wikipedia.org/wiki/Super_Audio_CD

   It typically compresses by a factor of between two and three, allowing a disc to contain 80 minutes of both 2-channel and 5.1-channel sound. [ 19 ] Direct Stream Transfer compression was standardized as an amendment to the MPEG-4 Audio standard, ISO/IEC 14496-3:2001/Amd 6:2005 (Lossless coding of oversampled audio), in 2005.

7. List of Sony products - Wikipedia

   en.wikipedia.org/wiki/List_of_Sony_products

   Today's division Sony Semiconductor Solutions Group was founded in 2015 and focuses on manufacturing image sensors, [3] microdisplays, [4] LSI, [5] laser diodes. [ 6 ] [ 7 ] [ 8 ] Image sensors