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Alternatively, one rear speaker can be used on its own. This is the type of quad setup used by Seeburg jukeboxes that had quadraphonic sound. [ citation needed ] The Hafler circuit is capable of partially decoding a Dolby Surround track since both share the same operating principles (based on sound phase differences).
Surround speakers are placed above the listeners ears and are not angled towards the listener. In cinema setups, many more than two surround speakers are often used, being placed along the side walls and along the back wall, creating a very diffused sound in the auditorium. [2]
Original Dynaquad diamond surround speaker placement. Dynaquad, or DY, was a matrix decoder 4-channel quadraphonic sound system developed by Dynaco in 1969. [1] [2] [3]The system originally had four speakers that were arranged in a diamond shape (centre-front, centre-left, centre-rear, centre-right).
The left and right surround speakers in the bottom line create the surround sound effect. 5.1 surround sound ("five-point one") is the common name for surround sound audio systems. 5.1 is the most commonly used layout in home theatres. [1] It uses five full-bandwidth channels and one low-frequency effects channel (the "point one"). [2]
A 7.1.2-channel system has seven main speakers, one subwoofer and two rear speakers. As a general rule, more speakers equals bigger, broader sound. Size: Does size matter? As with most speakers ...
The first and simplest method is using a surround sound recording technique—capturing two distinct stereo images, one for the front and one for the back or by using a dedicated setup, e.g., an augmented Decca tree [20] —or mixing-in surround sound for playback on an audio system using speakers encircling the listener to play audio from ...
A Dolby Pro Logic decoder/processor "unfolds" the soundtrack back into its original 4.0 surround—left and right, center, and a single limited frequency-range (7 kHz low-pass filtered) [3] mono rear channel—while systems lacking the decoder play back the audio as standard stereo.
In contrast, Dolby's competing EX codec, which also boasts a center rear channel, can only handle matrixed data and does not support a discrete sixth speaker channel; it is most directly comparable to DTS-ES Matrix 5.1. Note: The center-rear/surround channel is encoded and decoded in exactly the same way as the center-front.