The EX in DD was not developed exclusively by Dolby. THX was the principal
technology provider. They developed this new sound format for The Fandom
(sorry, Phantom) Menace. THX is part of George Lucas' empire, so they had
enough clout to get the format accepted. They even went as far as to tell
every theater operator that in order to get TPM, they would need to install
THX-EX. So a receiver must have a THX certification in order to be DD-EX. If
not, then the receiver is using a propietary decoding technique (such as
what Yamaha has been doing) and the results won't necessarily be similar to
DD-EX.
DTS-ES is something different. There are three flavors: matrixed 3.2:1 (3
discrete channels, two matrixed surrounds that produce 1 center channel) or
discrete 6.1, and Neo 6.1, which is a propietary surround processor for
music. Being the copycats DTS usually are, they are simply lagging behind
Dolby Technologies.
Francisco.
----- Original Message -----
From: "las" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, January 29, 2001 10:20 AM
Subject: Re: MD: THX / Dolby stuff...
>
> Neil wrote:
>
> > That really should read DD-EX, as EX is a development of Dolby Digital
> > sound.
>
> But that's not what they are listing it as on the receiver. It says
THX-EX. In
> the case of dts, I have DVD in front of me and they call it dtsES.
>
> Larry
>
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