[mythtv-users] AC3, Analog Cable and 5.1

[Warren]

Brian Wood wrote:
> On Mar 22, 2006, at 7:04 PM, Michael Heironimus wrote:
>
>   
>> That being said, very few TV programs make any real use of Dolby
>> Surround. When I play a DVD I'm surprised if it doesn't have at  
>> least 4
>> channel audio, but I'm even more surprised when a TV show on cable has
>> anything on the rear channel. Usually almost everything is through the
>> center channel.
>>     
>
> One of the first shows to use surround sound encoding was the old  
> "Arsenio Hall" show. This caused a lot of problems because most  
> stations transmitting stereo use a "monoguard" to detect and correct  
> an out-of-phase condition, which will result in almost inaudible  
> sound on a mono receiver. Since the encoding used phase modulation it  
> drove the monoguard crazy, switching back and forth trying to correct  
> what it detected as a "fault". Stations were given no warning of this  
> at all and it was a real problem. Eventually everyone just switched  
> off their monoguards for the program but it still created strange  
> sounding stuff on a mono set.
>
> Just thought you might be interested in some ancient history.
> _______________________________________________
> mythtv-users mailing list
> mythtv-users at mythtv.org
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>   
A similar thing happened when Star Trek: The Next Generation started
their first season.  It was in Dolby Surround and made decent use of the
full field.  Apparently in NY everything was fine, but when I went to my
parents' house in Florida it sounded like garbage.

W
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mythtv.org/pipermail/mythtv-users/attachments/20060323/46c1e4f4/attachment.htm