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In Reply to: RE: Bits and Bytes posted by AbeCollins on July 19, 2016 at 00:33:52
For comparison between HR DSD audio and HR video, 1080p video streaming from Netflix requires 7Mbps throughput, and 4K streaming through Netflix requires 15Mbps; whereas DSD256 is triple throughput of 1080P @ 22.579 Mbps, and DSD 512 is triple 4K at 45.158 Mbps.
A form of lossless compression for DSD would be needed but it does not exist yet.
Follow Ups:
I must admit to being completely ignorant of DSD audio. Is this format available on optical discs? If it is, how many minutes of music are available on a disc?
TIA
JE
"A difference which makes no difference is no difference at all." - William James
It is only available as DSD64 format on SACD.
DSD64 is 5,645 Kbps for stereo and it is 2.37 GB/Hour.
DSD128 is 11,290 Kbps for stereo and it is 4.73 GB/Hour.
Formats such DSD128, 256 and higher are only available through download.
Just to compare:
PCM 24/96 is 4,608 Kbps for stereo, at 1.93 GB/Hour.
PCM 24/192 is 9,216 Kbps for stereo, at 3.86 GB/Hour.
They both have been available on DVD-Audio or BR-Audio.
Thanks for your reply!
Wowzers! That's a lot of data just to hear a track.
In fact, it's so much data that it gets me to wondering if there wouldn't be a more economical way of improving the sound of a track, such as ending the loudness wars.
I mean, we can keep throwing bandwidth at our music, but if it is still compressed, then what is the point?
JE
"A difference which makes no difference is no difference at all." - William James
Technically, those PCM bit-rate figures can be reduced with lossless compression (w/o a loss in audio quality). Not sure about DSD.
is DST on many SACDs.
So I gather it can be compressed for streaming as well. Thx!
..1080p video streaming from Netflix requires 7Mbps throughput, and 4K streaming through Netflix requires 15Mbps;Interesting and that's with a good amount of compression I bet as those with keen eyes will tell you that the video quality from Netflix and other similar streaming services is below what can be achieved with ones own DVD/Blu-ray player.
I have witnessed more pixelation and motion blur from our Cable TV/Internet provider (including movies from HBO, Starz, Showtime, etc), as well as AppleTV and Amazon Fire TV, vs. the same movies played on my Blu-ray player. The Blu-ray player is sharper and it's nothing special, just a cheapie Sony.
I don't think there will ever be much of a market for DSD streaming. Heck, there's hardly a market for 44.1/16 PCM streaming except among a few audiophilles.
Edits: 07/19/16
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