無線數位輸出該選哪個~Airport Express還是Apple TV?

nexium
個人積分：164分
文章編號：24268294

164分

樓主

2010-12-02 2:23

有沒有人知道Airport Express和Apple TV
哪一個數位輸出的能力較好

Express似乎是16/44.1(國外的文章)+toslink共用
這線材很麻煩不然就要忍受多一個轉接頭

Apple TV就不曉得其晶片的處理規格
線很好找倒也算優點
有人可以分享一下嗎

2010-12-02 2:23 發佈

文章關鍵字無線數位 Apple TV ~Airport Express

nexium

nexium
個人積分：164分
文章編號：24268351

164分

樓主

2010-12-02 2:32

附註..因為只是想找一個802.11n傳輸的媒介
預算就差不多在3000左右

高一級的squeezebox就先不考慮了
更別說MW-10...燒燙燙的beta還是alpha那種的...
預算考量....只想單純作個平價的無線音樂平台

nexium

nexium
個人積分：164分
文章編號：24268371

164分

樓主

2010-12-02 2:35

這是我之前找到的資料
文章很長僅提供給有興趣的人參考....
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Biggest difference sound wise would be that using the express iTunes uses apple lossless to transfer wirelessly to the express, then sends it out via toslink optical at 16/44.1. So if that's the original sample rate/bit depth than no losses (jitter not withstanding). However if you ever want to go to higher res material you need the mini's direct toslink connection to preserve the higher rates ie 24/96 or higher.

Apple TV, Airport Express and Computer Audiophile Network Streaming
So I have entered the dark murky depths of the Computer Audiophile underworld! Too make things more awkward I want to use wireless streaming to receive my audio signal. Shock Horror!

I have two devices at my disposal, the Airport Express N or Apple TV. Both feature optical output (which is shunned by audiophile snobs who prefer copper Sp/dif) but to me sounds great. The Apple TV uses a regular optical output whilst the Airport Express has a minijack like on the imacs, cd players and macbooks.

The bonus of the Airport Express is that it can output audio with a headphone jack but to be honest the DAC is crappy.

The advantage of the Apple TV is that it uses 8GB as cache, and therefore works better over slow networks. I had problems with dropouts with the Airport Express when joining an existing network and also when using a created network when using Windows Vista over G,no problems with Windows 7 & G).

The main problem I found with the Apple TV is that the remote on the ipod/iphone doesn't work particularly well. I found that when I setup my own network on the Airport Express the ipod/iphone remote runs better and faster and also has a slightly better interface than selecting Apple TV in the remote.

The other advantage of Airport Express is that as it is running the network much closer to where the action is. The problem with Apple TV is you have to share with everyone else using the network and the WAP might be to far away. Because wireless is like a hub, there are pauses in the network when everyone has to use it (although this doesnt affect the Apple TV as it caches its stream). Therefore if you setup a separate network with just two (AX and PC) there are no interruptions. The latency on a pure N network is fantastic.

The other important settings are to make sure that you go to control panel sounds and change the default from 48k to 44k which degrades the audio. This is a silly default setting as Windows has to resample your music from 44k to 48k (Most CD"s are in the 44k format). The other is to make sure the EQ and sound enhancer is off in itunes & the volume is at full, this ensures bit perfectness from Apple Lossless files.
http://blog.szynalski.com/2009/11/17/an-audiophiles-look-at-the-audio-stack-in-windows-vista-and-7/

Oh yeah BTW, apple lossless is the preferred format. You can use AIFF but the streaming protocol will convert it to apple lossless anyway!

MARK LIN

MARK LIN
個人積分：30分
文章編號：24379412

30分

4樓

2010-12-07 12:13

Airport express 只吃ALAC
PC裏頭的AIFF 輸出時會(必須)轉成ALAC
2010 Apple TV (2代)與1代相同直接解AIFF
16/44.1K AIFF約1.5Mbit ALAC 約900Kbit
用網路流量監測,看得到!!(AIFF 放 NAS)
以上如有錯誤請修正

feijan

feijan
個人積分：120分
文章編號：24381679

120分

5樓

2010-12-07 13:50

上禮拜看到板上有人在討論，就跑去買了一台Airport Express來玩一玩。

現在的接法是:
訊源1: Sonic Frontiers SFCD-1->擴大機
訊源2: PC->Wi-Fi->Airport Express->光纖線->DAC4395->擴大機。

可能是我的DAC不夠高檔，播放Apple lossless格式檔的效果仍比不上我的CD唱盤，但是玩了幾天的心得是
真的還不錯，太方便了，現正考慮買一台I-PAD或I-POD TOUCH來當遙控器。