Dts vs dolby atmos full#
Dts vs dolby atmos pro#

PLII decoders utilized a broadband decoder, which could only steer single sound sources, Dolby Surround now uses a multiband decoder, similar to Neo:6, and is therefore able to steer multiple independent sounds. So whatвЂ™s different about Dolby Surround and Neural:X? Which one works better with 5.1/7.1 content?Дolby Surround is significantly more advanced than PLII/x/z. With the release of Atmos, (and later, DTS:X), both decoders came with entirely redesigned upmixing solutions, Dolby Surround and DTS Neural:X, both of which are able to fully decode as many extra channels as your AVR can process. DSX functioned by increasing the apparent width and height of the sound stage via ideal early reflection simulation. Audyssey also provided front height and width channels via Dynamic Surround Expansion (DSX), however, unlike Neo:X and PLIIz, no steering logic was involved. Similarly to PLIIz, Neo:X extracted diffuse information from either the front or surround (depending on the configuration) channels, while deriving left and right width channels from the sum and difference of the front and surrounds. Unlike PLIIz, Neo:X had the ability to decode up to 11 channels, either two pairs of height channels mounted on the front and rear wall, or front height and front width channels. PLIIz extracted height information by routing spatially diffuse sounds from the surrounds to a single pair of height channels mounted on the front wall, Neo:X. This offered increase channel separation and improved accuracy.ДЄround 2009, both Dolby and DTS added the ability to extract height information, renaming the decoders PLIIz and Neo:X.

So long as a sound lied within a different band, it could be steered independently from other sounds. Unlike PLIIx, Neo:6 was capable of steering multiple sounds into different channels at once, by first splitting each channel into up to 19 frequency bands.

Dts vs dolby atmos full#

Like PLII and IIx, Neo:6 could decode 6 full range channels (a mono rear channel that could either be routed to a single speaker or pair) from stereo or 5.1 channel content. Around the same time, DTS released their own upmixing solution called Neo:6. PLII was improved once again (renamed PLIIx) by adding the ability to decode two rear channels in addition to the surround channels, by further processing the spatial differences between the surrounds. This worked extremely well with any content, providing a simulated surround experience that was nearly as accurate as a discrete mix. The sum of the left and right channels was mixed into the center, and the spatial timing differences were routed into the surrounds.

PLII had the ability to decode 5 independent full range channels from any stereo content using a negative feedback circuit. In the early 2000s, PLII was introduced as an improved version of the original PL.

Dts vs dolby atmos pro#

Dolby Pro Logic could technically be used on regular stereo content, but the results were poor, with too much content collapsing into the center channel, this was especially problematic for music.ДЄ new solution was needed. This increased the channel separation achievable by about 30dB. In addition to logic steering, the surround channel was delayed so that any sounds leaking into the surrounds from the front channels arrived later, helping to decorrelate the channels. Accuracy was improved by using logic steering (hence the name), which operated by raising or lowering the volume of other channels depending on the dominant signal, for example, a strong mono signal would trigger the decoder to lower the volume of the left and right. In addition to the left, right, and surround channel, a center channel was added, giving a total of 4 channels. In 1987, the decoder was improved upon and renamed Pro Logic. Unfortunately, there was only about 4dB of separation between the surround channel and the front channels, so a low pass filter of 7khz was used to sort of вЂњtone downвЂќ the surrounds. The original Dolby Surround decoder derived a single mono surround channel (which was played back through an array of speakers in the cinema two speakers in the home) by extracting the out of phase information and routing it to the rear. It consisted of two tracks mixed as stereo called Right Total and Left Total, containing the left and right tracks, a center channel mixed at -3dB, and the surround channel mixed at -3dB and out of phase with the right, left, and center. A Brief History of Surround Upmixing, From Dolby Surround to Dolby Surround.Д«ack in the early days of surround sound, before discrete digital surround sound, Dolby came up with Dolby Surround (the original version, confused yet?). In Part II, we will be looking at the differences between the upmixing modes of each decoder. In Part IВ we looked at the differences between DTS:X and Atmos as far as the layout goes.