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Raspberry Pi 週刊 第十二期

July 04, 2018

Raspberry Pi 週刊 第十二期

本週店主會談談, Raspberry Pi 3對使用不同NAS時的影響。

不同NAS對音質有何影響?
不同的NAS通常聽起來不同,大多數Hi-Res音響用戶正在尋找像i-o data fidata,Qnap和Synology NAS這樣的最佳音響NAS。 我們收到了很多來自用戶的評論。 最後的評論是如果可能的話選擇Audio Grade NAS,因為設計和實現來自音頻發燒工程師。 Audio Grade NAS 內部時鐘介面的配合也有莫大關係。

發燒NAS最重要的設計是什麼?
首先,NAS需要設計成無風扇,無聲,並始終以發燒友的心意來開發反共振外殼。最重要的是NAS的主板需要遠離電源和產生電磁場和EMI的硬盤。受污染最嚴重的區域是SATA III和電源線的連接器,這會影響音質和信號路徑。

哪個對音質最好的? SSD或HDD?
這總是取決於發燒友的口味,我們有一些來自體驗發燒友的評論。他會建議硬盤是呈現音樂的最自然的方式,它比SSD音質更平滑。不過,SSD的聲音清晰度更高。

哪種HDD最適合NAS?
正確地說,像5900rpm這樣的低轉速聲音在低噪音和低背景噪音方面是最好的。

哪款SSD最適合NAS?
Samung EVO系列是發燒級最佳的產品,它在背景和聲場中產生更多微動力。

什麼店主會推薦升級NAS?
第一個重要部分是NAS的線性電源。它將消除惡劣的數字聲音。這是因為大多數高調的NAS總是消耗5-9安培的高功率。 EMI噪聲成為影響音頻的重要因素。


關於技術的話題:

什麼是DLNA?
數字生活網絡聯盟(DLNA)是控制DLNA認證標準的非營利組織的名稱。 DLNA標準建立瞭如何使網絡媒體設備共享數據。這意味著使用符合DLNA的設備意味著您可以輕鬆共享媒體。例如,您可以將音樂從PC傳送到電視機。

DLNA通常與通用即插即用(UPnP)協議互換使用。但是,這並不准確,因為DLNA以媒體為重點增強了UPnP協議。

為什麼需要DLNA媒體服務器軟件?
所以,現在你知道DLNA了,你可能想知道為什麼你需要DLNA媒體服務器軟件。基本上,DLNA媒體服務器軟件可讓您通過DLNA協議分享您的電影,音樂和照片。

這意味著諸如電視,遊戲控制台和媒體播放器等符合DLNA的設備可以輕鬆地通過網絡在家庭媒體服務器上播放媒體。

DLNA媒體服務器通常也會增加額外的功能,比如抓取電影封面等元數據並對您的視頻文件進行轉碼以確保在各種設備上播放。

Raspberry Pi Weekly No.11

Is different NAS sound the same?

As you expected different NAS usually sound different, most audiophile user is finding the best sounding NAS like I-O data fidata, Qnap and Synology NAS. We received so much comments from the user. The final comments is to choose the audio grade NAS if possible, because of the design and implementation is from audio engineer. The internal clock from the Audio Grade NAS is totally different design. 

What is the most important design for audio audiophile NAS?
First the NAS needs to be designed with fan-less, silent, and always implement with audiophile's mind to develop the anti-resonance enclosure. Most important the motherboard of NAS needs to be away from power supply and the HDD which produce electro magnetic field and EMI. The most polluted areas is the connector of the SATA III and power cable, which can affect the sound quality and signal paths. 

Which sound the best SSD or HDD?
This is always depends on the tastes of audiophile, we have some comments from experience audiophile with NAS. He would suggested that HDD is being the most natural way to present the music, it just smoother then SSD. However, the sounding from SSD is more details in clarity. 
Which HDD is the best for NAS?
Properly the low rpm one like 5900rpm is sound the best in terms of less verberation and low background noise. 

Which SSD is the best sounding for NAS?
Samung EVO Series is the best in audiophile, it produce more micro dynamic in back ground and details in soundstage.

What will recommend for upgrade the NAS?
The first important parts is the Linear Power Supply for NAS. It will elminate the harsh and digital sounding. It is because most high profile NAS always consume high power with 5-9 Amp. The EMI noise become a big issue to affect the audio sounding.

Technical Insight:
What Is DLNA?

The Digital Living Network Alliance (DLNA) is the name of a non-profit organisation that controls the DLNA certification standard. The DLNA standard establishes how enables networked media devices to share data. This means that using DLNA-compliant devices means that you can easily share media. For example, you can stream music from your PC to your TV.

DLNA is often used interchangeably with Universal Plug and Play (UPnP) protocols. However, this is not accurate as DLNA enhanced the UPnP protocol with a focus on media.

Why Do I Need DLNA Media Server Software?

So now that you know about DLNA, you’re probably wondering why you need DLNA media server software. Basically, DLNA media server software lets you to share your movies, music and photos via the DLNA protocol.

This means that DLNA compliant devices such as TVs, game consoles and media players can readily playback your media from your home media server over the network easily.

DLNA media servers often add additional functionality too, such as scraping metadata like movie covers and transcoding your video files to ensure playback on a wider variety of devices.



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