[mythtv-users] THX "support" in myth WAS- Re: Powered 5.1 speakers or A/V Receiver?

[Paul Bender]

Justin The Cynical wrote:
> Kisner, Thomas wrote:
> 
>> I don't about THX support in myth (I just have a 5.1 receiver).  I think
>> there is a way to up-convert 5.1 to 7.1 in Linux, but I haven't done
>> that either.  I have a friend that has a 7.1 and THX setup (he doesn't
> 
> *snip*
> 
> As an aside, there is no such thing as 'THX support' in anything.  If 
> it's on the box as 'THX compliant' (or whatever term the marketdroids 
> are using now), it's just that, marketing.
> 
> THX is not an encoding format, it's a QA program.  Think along the lines 
> of 'Certified to work with Microsoft Windows' and you will basically 
> have it.

While mostly a QA program, THX is not completely a QA program. It 
includes some design specifications as well (e.g. the cross-over filter 
response and its partitioning between the receiver and speakers). 
However, if you buy a combine amp+speaker system, then things like the 
cross-over filter response should be be matched correctly between the 
receiver and speakers already.