Why not just design the Dolby decoder to handle two or three input streams, mix the results and output it? Using two decoders seems rather brute force. -- Keith > -----Original Message----- > From: John Shutt [mailto:shuttj@xxxxxxxxx] > Sent: Thursday, April 08, 2004 11:52 AM > To: opendtv@xxxxxxxxxxxxx > Subject: [opendtv] Re: PR: Enhanced AC-3 Audio Specifications > Serve Multiple Applications > > > Mark, > > Then I stand corrected. It was always my understanding of > the Urban Myth that the STB box manufacturers didn't want to > spend the extra money for a second Dolby Decoder. If Dolby > offered to allow the second decoder for no extra license fee, > then I am at a loss as to why STB manufacturers did not build > in the functionality from day one. > > The real fault lies with the ATSC in not making dual decoders > a MUST rather than a MAY, as you allude to. > > The real, real fault lies in adopting a standard that is > still evolving, yet must maintain backwards compatibility to day one. > > The only people that will ever use dual audio stream mixing, > directed channel change, or any of the other "goodies" stuck > onto the standard after the first generation boxes were > deployed will be closed system providers like USDTV who can > have their boxes custom built to their specs. > > Cheers, > > John Shutt > > ----- Original Message ----- > From: "Mark Schubin" <tvmark@xxxxxxxxxxxxx> > > > We are in complete agreement about the problems of single-stream > > decoders > in ATSC receivers, but I think > > you might be off-base in blaming Dolby. They fought for mandatory > dual-stream, and, I think, were willing > > to allow the second decoder fee-free. My understanding is > that, when > > they > couldn't get the mandatory > > dual-stream status, they did decide to charge for the > second but much > > less > than for the first. > > > > TTFN, > > Mark > > > > ---------------------------------------------------------------------- > You can UNSUBSCRIBE from the OpenDTV list in two ways: > > - Using the UNSUBSCRIBE command in your user configuration > settings at FreeLists.org > > - By sending a message to: opendtv-request@xxxxxxxxxxxxx with > the word unsubscribe in the subject line. > ---------------------------------------------------------------------- You can UNSUBSCRIBE from the OpenDTV list in two ways: - Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line.