hdmi v.s optical

[markw]

Now Mark didn't mom tell ya fits of jealousy are simply not becoming.

Your childish attempt to twist my post is so petty. If you don't know the answer to those questions you shouldn't be helping anyone. Optical is digital. According to the Dolby website the core DD and DTS will still sound better on Blu-ray vs standard DVD because of less compression. I don't profess to be an engineer but I presume a receiver's DAC would decode larger or smaller bit samples the same way a mp3 can play 48 kbps to 320 kbps.

Now please, just get over the tantrum.

Actually, it's got more to do with the bit rate but ultimately, he'll still get better sound via the analog connections.

But, why won't DD+ work over a coaxial connection? Methinks you're wrong on this.

[musicman1999]

I do not believe that DD+ was ever used on a Bluray, it was a HD-DVD audio format only. I don't know is coax would handle it or not but i would bet that it would not due to bandwidth issues. Dolby digital from a Bluray has 640 bit rate while dvd has 448 bitrate
no matter how you connect.

bill

[markw]

I do not believe that DD+ was ever used on a Bluray, it was a HD-DVD audio format only. I don't know is coax would handle it or not but i would bet that it would not due to bandwidth issues. Dolby digital from a Bluray has 640 bit rate while dvd has 448 bitrate
no matter how you connect.

bill

I don't think bandwidth is an issue here. I read somewhere that toslink has a bandwidth of 6Mhz while coax has the potential of 500Mhz but, all in all, I doubt this would be an issue unless we were talking every long lengths, the type which home systems would rarely encounter unless we were Bill Gates.

And, Dolby Digital with a 640 bitrate IS Dolby Digital plus.

[musicman1999]

I don't think bandwidth is an issue here. I read somewhere that toslink has a bandwidth of 6Mhz while coax has the potential of 500Mhz but, all in all, I doubt this would be an issue unless we were talking every long lengths, the type which home systems would rarely encounter unless we were Bill Gates.

And, Dolby Digital with a 640 bitrate IS Dolby Digital plus.

No, bandwidth is the issue, neither toslink or coax are capable of the bandwidth needed for high def formats.
Dolby digital with a 640 bitrate is not DD+. The "core dd" track taken from DD+ when using optical has a 640 bitrate but to get dd+ you need a HDMI cable for digital transmission or an internal decoder and analog cables and it has a higher bit rate than DD, at least according to Dolby.

bill

[markw]

No, bandwidth is the issue, neither toslink or coax are capable of the bandwidth needed for high def formats.
Dolby digital with a 640 bitrate is not DD+. The "core dd" track taken from DD+ when using optical has a 640 bitrate but to get dd+ you need a HDMI cable for digital transmission or an internal decoder and analog cables and it has a higher bit rate than DD, at least according to Dolby.

bill

See item 10

http://www.dolby.com/assets/pdf/tech...DDPlus_FAQ.pdf

No format besides DD+ allows that 640 bitrate. Also, I don't see where it specifies digital, optical or HDMI connections as a requirement to access this on existing receivers. Heck, many don't even support HDMI

[musicman1999]

See item 10

http://www.dolby.com/assets/pdf/tech...DDPlus_FAQ.pdf

No format besides DD+ allows that 640 bitrate. Also, I don't see where it specifies digital, optical or HDMI connections as a requirement to access this on existing receivers. Heck, many don't even support HDMI

I guess my point was that regular DD can have a 640 bit rate, it does not need to be DD+ and a regular DVD can have 640, such as Pink Floyd's Pulse, and you need Blu or HD-DVD to have DD+.

bill

[markw]

I guess my point was that regular DD can have a 640 bit rate, it does not need to be DD+ and a regular DVD can have 640, such as Pink Floyd's Pulse, and you need Blu or HD-DVD to have DD+.

bill

AFAIKT, a "standard", commercially available DVD movie with old fashioned Dolby Digital clocks in at 448.

I've never seen a regular DD DVD with a bitrate of 640. Blu-ray, yes, when it's cut with DD+, and DTS has it's own set of rules, but never a regular DVD with Dolby Digital (no plus) audio.

And, as the pdf states, blu-ray discs cut with DD+ will play on "regular" AC-3 machines @ 640.