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The Dolby Pro Logic IIx system, available since 2003, can take two-channel stereo, Dolby Surround (sometimes called Dolby Stereo Surround) and Dolby Digital 5.1 source material and up-convert it to 6.1 or 7.1 channel surround sound.
Existing systems such as Dolby Pro Logic IIz simulate this with matrixed height channels, which are derived from ambient sounds from the left and right channels. The ".2" in 10.2 refers to the fact that an additional Low Frequency Effects channel is added, not just a second subwoofer, to enhance the sense of envelopment. All bass from the left ...
Most common loudspeaker configuration for 5.1; used by Dolby Digital, SDDS, DTS, THX, and Dolby Pro Logic II. The white square in the center of the diagram depicts the low-frequency speaker. Each black square depicts a loudspeaker. The center speaker in the top line of the diagram is used for dialogue.
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 ...
Audio equipment evolved from large wooden cabinets to compact units. The 1970s introduced enhancements like quadraphonic sound and technologies like Dolby Pro Logic. This era also saw the rise of component-based stereo systems, and cassette decks too became a staple. Integrated systems, termed "music centers" gained popularity in the 1980s.
Dolby Virtual Speaker: simulates 5.1 surround sound in a setup of two standard stereo speakers. [27] 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 ...
The SSM-2125 is a complete Dolby Stereo matrix decoder (except for the surround delay) on a single chip, it allowed domestic decoders which used the same logic system found in professional decoders to be marketed to the consumer. These decoders were thus named Dolby Pro Logic.
Inventing surround sound for television, Dolby Pro Logic II, high-end SQ 4-2-4 analog quad audio decoding James M. Fosgate (December 5, 1937 – December 7, 2022) [ 1 ] was an American inventor, engineer and businessman.
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