Dolby Digital 5.1 Intros (AC-3):
Dolby Digital 5.1 (AC-3) is a digital format that has become more popular with the coming of DVD disks in 1990. This Dolby audio format in the vob intros offers up to five dedicated main channels and one low frequency effect channel for one subwoofer. Dolby Digital is the most popular current decoding method and introduces the following enhancements that it can be heard in the demos:
Enhances center channel dialog clarity.
Greater separation music from effects.
It uses discrete surround channel.
Higher overall frequency range in the six channels.
It represents the original sountracks movies more accurately.
Dolby Digital Surround EX:
Dolby Digital Surround EX (DD SR EX) Introduces a new rear center channel. An encrypted channel matrix is extracted from the right and left rear channels, so we will have a 6.1 but no real, because this sixth channel is not recorded separately. Tex-EX is one of the trailers that use this technology.
Dolby Digital Plus:
Dolby Digital Plus (DD Plus) is an audio Dolby codec based on and compatible with Dolby Digital, but more advanced. This Dolby format has been selected as the standard audio format for HD DVD. Dolby Digital Plus can also be applied in environments with limited bandwidth, such as television broadcasts.
Dolby TrueHD is a Dolby lossless encryption technology. The m2ts intros encoded with this technology provides a bitwise sound reproduction identical to studio master. Up to seven separate channels at 24-bit / 96kHz and one LFE channel is supported, along with support for HDMI. Dolby TrueHD has been chosen as the format for HD DVD and optional for Blu-ray. Dolby True HD can theoretically support more channels, but has limited to eight channels in both standards.
Dolby Atmos technology is the first hybrid surround system, in Atmos trailers the traditional multichannel audio (5.1, 7.1 or 9.1) are mixed, called 'Beds', which generate immersive environment, with dynamic sound objects known as 'objects'. The powerful Dolby Atmos sound processor manages various signals indicating when, with what intensity and which speaker should reproduce each sound.
Dolby Atmos allows you to place up to 128 of these objects anywhere in room, with full versatility of movement and intensity. Thanks to the presence ceiling surround speaker, objects are also adjustable in height (Z axis). The result is a 360 degree Dolby Atmos experience in which different sounds can not be placed in a specific set of speakers. At the new Dolby Atmos section you can download and play m2ts and vob demos and trailers encoded in this format. In Dolby Atmos, screams, explosions or whispers, indiscriminately move around us.