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本文作者：Kent發佈日期：2011-06-06 02:06:16
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電腦數碼音樂重播專欄 (4) - 高效能電腦與影音的結合 - 德國 Cebit
講了幾期 CAS 基本理論知識後，今期停一停來介紹三月德國 Cebit 電腦展其中一部份。現今高階電腦主要都是遊戲世界。Intel 今年卻有一個專為電腦影音而設的 Home Theater Cube. 事緣在本年初的 CES 2011, Intel 高層聽過(還未完成的) Weiss MAN202 作高清音樂檔案的效果後，邀請了 Weiss 到 Cebit Intel 作示範。當然 Weiss MAN202 是使用 Intel 處理器和 SSD 硬碟，自家開發 Linux OS 和 iPad 搖控。
Home Theater Cube 內的高級影音椅聽說每張是 5,500 歐元!! 全套音響組合由11.1 聲道的 B&W 800 系列喇叭，Classe 前後級與 Cardas 線連接。DTS 在 Cebit 首現其 NEO:X™ 11.1 新制式 - 由 7.1 聲道再加上另外 2 隻前面左右遠聲道和 2 隻前面高度喇叭。 Home Theater Cube 內使用 Intel® Atom™ 處理器和單一 SSD NAS Server 來同時播映有 7 個獨立高清影像 (每個大約是 40MBit/s) 和 Weiss MAN202 高清音樂播放。示範重點是高效能電腦及中央網路儲存設備支援多媒體的威力。
中央網路儲存設備:
最高層: 8 個 3TB 硬碟組成 24TB 中央網路儲存。空閒時只使用 4W 電，開動時 50W。這是 NAS 其中一個優點。
第二層: 8 個 125GB SSD 組成 1TB NAS。所有高清影像及音樂檔案都由這一組 NAS 儲存。
第三層: 左面 Weiss MAN202 連接上 NAS 作兩聲道高清音樂播放。右面 3 個多媒體播放器將 NAS 內影像和 DTS NEO:X™ 作為 Ethernet 轉 HDMI
最低層: 電源處理器在下半年度希望在本地可以成立一個這樣的示範。在不久的未來，中央網路儲存將會是家居必備電器。
Last modified: 2011-08-08 02:45:09
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31 Comments
Whats the benefit of using SSD in NAS?
What intel cpu used in man202?
Is intel atom or intel i-series cpu?
traditional hard disk has moving parts. the disc rotating and read write head moving in similar fashion like a turntable with tonearm and cartridge.
ssd uses solid state non volatile memory chips to hold data. there is no moving parts. it reads and writes faster and generate no noise.
But this SSD is placed inside the NAS which is far away from the MAN202. There is simply no advantage of using SSD in this manner
whenever there are moving parts there will be noise plus heat. with heat u need to add fan and there will be fan noise.
advantage of Use of SSD should be very stable throughout data rate and speed for smooth video playback of HD and 4K format without any dropout of frame, not for audio.
But this SSD is placed inside the NAS which is far away from the MAN202. There is simply no advantage of using SSD in this manner
I think it is better replace the ssd with hdd, and judge by our ears,
if ssd really better than hdd, then find out the answer la
Maybe the NAS in the show were fan-less and passively cooled to eliminate all moving parts including cooling fan to reduce noise, as 8 HDD in a NAS need a big and high flow rate to cool, if using Magnetic Platter based HDD.
"I think it is better replace the ssd with hdd, and judge by our ears,"
A very expensive experiment!
i cannot understand why u need to think.
just do it and verify. after that come back here and report to us.
the read/write and transfer rates of ssd should be superior than mechanical hhd. similar with data transfer from ram than from hhd.
there are different types of ssd , single layer cell and multi layer cells ( golden shopping center guys told me)
4years ago I have replaced my notebook computer with 64G SSD made by samsung cost 10000hkds
"I think it is better replace the ssd with hdd, and judge by our ears,"
A very expensive experiment!
or we can try replace hdd of our pc to ssd and hear the different with our cas system
Does sound better inside a PC. But may be different in NAS
nas has processor, simplified operating system, memory, raid card, network card similar to a computer.
the differences are computer may have operating system cater for other application software rendering management of ram and processor computing differently from a dedicated nas together with unnecessary services such as firewall, auto update etc which eat into memory and processing.
"""or we can try replace hdd of our pc to ssd and hear the different with our cas system"""
yes u may try this but u have to ensure your pc is fanless to reap the benefit of using ssd instead of hdd
how to deal with the heat from power supply and processor is a big question. dont forget the reliability issue.
Should we apply SLA on all CAS related equipment and Enterprise Storage as well!
＞ Whats the benefit of using SSD in NAS?
Speed.
There are 7 high definition video (each about 40MBit/s) plus MAN202 audio stream playing at the same time. You can treat it as a home of 7 people watching different HiRes streams at the same time.
It doesn't really matter what CPU MAN202 is using because it is keep changing and final product will be some additional things we are trying to imply.
＞ Should we apply SLA on all CAS related equipment and Enterprise Storage as well!
=) I thought there is commitment under each sales.
To be precise, Blu-Ray could reach even higher than 40Mbit/s on some scene.
How could 7 people stream over the ordinary HOME network with a router device??
For pure audio source replay, no need to talk about SSD.
We should pursuit for the best format - RED Book.
If RB is true then what is the real RAW format identically to RB?
We should pursuit for the best format - RED Book.???
is 24 bit depth better than 16 bit?
what about hi rez?
Big Big C Hing,
Source - a lot of OLD CD still sound better than the modern revision.
It is the DAC...... issue more than the ....!
Where could we get TRUE native RAW FORMAT without human maniplilation........
Once on the Web, will you pay?????
We should pursuit for the best format - RED Book.???
is 24 bit depth better than 16 bit?
what about hi rez?
"There are 7 high definition video (each about 40MBit/s) plus MAN202 audio stream "
Now I get it!
As I said before, Video application is more bandwidth demanding than Audio, even 7.1 channel.
one high resolution video should not be a problem. it is 7 videos running in parallels that requires such a fast setup. Probably arranged in Raid 1 manner. I don't think it is for sonic benefit.
After all......we human need analog signal.
＞ "There are 7 high definition video (each about 40MBit/s) plus MAN202 audio stream "
In NAS is it the Network speed that is bottlenet, instead of SSD or HDD?
If you get 40M BIT / second in NAS SSD, I just did a file transfer between 2 7200 RPM HDDs in my old PC (i.e. transfer via SATA) and get 55M BYTE / second.
In addition, do you imply 1 PC can play 7 Hi-Res (you mean blueray?) files simultaneously? Gee this is wonderful! I wonder what kind of PC hardware and Graphic card can do that?
Hey this is a good test! I just tried and I can do 4 Hi-Res (1080i) at the same time, I have E7400 running at 1.6 Ghz + ATI 6850 + 4G RAM + WD 7200 1T.
Oh!!! ackcheng hing I guessI get it... this show is organized by Intel so the key point is that it is suggested to use Intel SSD when streaming hi-res files. If so then apology for the stupid questions I asked...
ackcheng hing, if you have a chance listen to MAN202 please let us know; I wonder how it compares to Kuro hing's Transporter!
Guess it is not available until winters come. The additional advantage for Man202 will be the associated DSP function like SARACON up sampling etc. They can easily add on other filters to make the sound different. Can even add in "dynamic" filters etc. These kind of tricks are commonly used in mastering and will be so easy for Daniel to incorporate into the software.
As I always believe, getting bit perfect is good, but having the flexibility to add in various flavors under control is even better!