Bryan "C." A.
Agent
- Joined
- Oct 20, 2002
- Messages
- 32
Dan,
I checked out that thread and found that AustinKW in post 64 confirms exactly what I was trying to point out. I cannot speak for the DV47Ai, but since the DV45A does not process the time alignment part of bass management for SACD, it may not be doing DSD->PCM->BM(->DSD)->analog conversion instead doing DSD->partialBM->analog. I placed the second DSD in parentheses because the Pioneer 49TXi does not do this per AustinKW and I find it highly doubtful that the Philips 936SA converts back to DSD after bass management is done as this would unnecessarily process the signal even further. (In that same thread, John Kotches asked the question why the 936SA would convert PCM back to DSD and Stacey Spears offered a possible reason based on the supposition that the 936SA upconverts other PCM sources such as CD to DSD.) All in all, it was very informative to me, because I thought only DVD-Audio was going to be allowed over the iLink. That was one of the reasons I chose the DV45 over the DV47Ai. Another reason was cost, because I think I may have to replace it in the near future :star: when 6.1 channel output players appear, which I foresee as a definite possibility given the fact that the sixth channel is sometimes meant to be full bandwidth and then there is DTSES. (Yes, I realize the DVD-Audio and SACD sixth channel at full bandwidth is rarely meant to be a back surround like the DTSES channel.) One more reason I chose the DV45 over the DV47Ai is that I am hoping for a definitive standardized system for using the digital link, but that may never come to fruition due to propietary concerns. My final thoughts regarding what I read in that thread are that perhaps DSP could be performed directly on DSD, but it would probably take de-multiplexing each channel to a dedicated buffered processor capable of storing several milliseconds of DSD and that amount of memory may be cost prohibitive.
:star: The near future should be read as before the two year warranty expires, which may seem like a far future to some enthusiasts.
I checked out that thread and found that AustinKW in post 64 confirms exactly what I was trying to point out. I cannot speak for the DV47Ai, but since the DV45A does not process the time alignment part of bass management for SACD, it may not be doing DSD->PCM->BM(->DSD)->analog conversion instead doing DSD->partialBM->analog. I placed the second DSD in parentheses because the Pioneer 49TXi does not do this per AustinKW and I find it highly doubtful that the Philips 936SA converts back to DSD after bass management is done as this would unnecessarily process the signal even further. (In that same thread, John Kotches asked the question why the 936SA would convert PCM back to DSD and Stacey Spears offered a possible reason based on the supposition that the 936SA upconverts other PCM sources such as CD to DSD.) All in all, it was very informative to me, because I thought only DVD-Audio was going to be allowed over the iLink. That was one of the reasons I chose the DV45 over the DV47Ai. Another reason was cost, because I think I may have to replace it in the near future :star: when 6.1 channel output players appear, which I foresee as a definite possibility given the fact that the sixth channel is sometimes meant to be full bandwidth and then there is DTSES. (Yes, I realize the DVD-Audio and SACD sixth channel at full bandwidth is rarely meant to be a back surround like the DTSES channel.) One more reason I chose the DV45 over the DV47Ai is that I am hoping for a definitive standardized system for using the digital link, but that may never come to fruition due to propietary concerns. My final thoughts regarding what I read in that thread are that perhaps DSP could be performed directly on DSD, but it would probably take de-multiplexing each channel to a dedicated buffered processor capable of storing several milliseconds of DSD and that amount of memory may be cost prohibitive.
:star: The near future should be read as before the two year warranty expires, which may seem like a far future to some enthusiasts.
My statement earlier was in regards to dvd-a has no bass management in general. Excluding this and the 47ai player.Although I would agree with the "in general" part, there are several players that now have bass management. For instance, the Denon DVD-3800 with full digital bass management is the best sounding DVD-Audio player I ever auditioned. The Pioneer DV45A is a close second and offers SACD which sounds at least as good as the Sony NS755V though not quite as ambient as the Sony NS999ES, which, according to all current reports, must be doing the DSD to PCM conversion since the 999ES allows one to set time alignment in the form of speaker distances. The Pioneer does all formats well enough for my ears and at about one fifth the price of buying both the Denon and Sony ES -- not including the extra cables and hassles. If the Pioneer had HDCD included like the Denon, I would be a glowingly happy camper. Sigh, I will have to keep an extra unit stacked in my already crowded cabinet for that purpose.