走向超值而極緻的 HI-FI電腦訊源（連載）

[dequad]

本來應該發在隔壁樓軟體討論串，但那邊貼圖比較麻煩，就發在這邊了。

用 Audacity 看同一首曲的 wav 檔，上面是 CD rip，下面是從 Qobuz 購買下載的。

wav comparison.jpg

[seeteeyou]

https://iancanada.ca/products/sc-pur...52664304206124

Newly released in 2026, #80E SC-Pure 24.000MHz could be the best phase noise performance clock so far that can be sourced for ultra-high performance USB output or USB re-clock applications.

通常 StarTech.com 的產品也是首選之一：

https://www.startech.com/en-us/cards...rs/pexusb3s44v
https://www.amazon.com/StarTech-com-.../dp/B00HJZEA2S

肯定是 24MHz：

https://www.renesas.com/en/products/upd720202
https://media.startech.com/cms/produ...3s44v.d.eg.jpg

由於 SC-Pure 並非便宜貨，因此小試牛刀的話還是利用對岸的同類型產品比較安心：

https://www.glotrends-store.com/products/u3044
https://www.glotrends-store.com/products/u3023
https://www.aliexpress.com/item/1005006603235423.html
https://www.aliexpress.com/item/1005008672921991.html
https://www.aliexpress.com/item/1005011652086425.html

[psycho]

這是最討厭的，線上購買的聲音檔，完全無法保證品質！除非讓我好好研究個幾年去抓它的規律......

相對的CD唱片反而安全非常多。等到box不營業我們就麻煩大了！！

本來應該發在隔壁樓軟體討論串，但那邊貼圖比較麻煩，就發在這邊了。
用 Audacity 看同一首曲的 wav 檔，上面是 CD rip，下面是從 Qobuz 購買下載的。
wav comparison.jpg

[mybruce]

請參考 https://zh.wikipedia.org/w/index.php...&variant=zh-tw

有些早點的 CD 就是這樣的審美產物。近期再 remix 的錄音上傳至線上平台就避開了這樣的做法。

本來應該發在隔壁樓軟體討論串，但那邊貼圖比較麻煩，就發在這邊了。

用 Audacity 看同一首曲的 wav 檔，上面是 CD rip，下面是從 Qobuz 購買下載的。

wav comparison.jpg

[dequad]

音量大小可以調，但音質完全崩壞

[seeteeyou]

兵不厭詐，商場如戰場，因此網店的檔案還是洗洗睡吧：

https://www.head-fi.org/threads/fake...#post-13999511

Unfortunately there is also a way to fake the spectrum itself, meaning, it is possible to turn an MP3-like spectrogram into a FLAC-like "full" spectrogram. I have seen examples of that and they can even fool a person using graphical spectrum analyzers, if they are not experienced. I won't say more about how that's done since I don't want to be giving anyone ideas (I may only explain how to detect such files or send learning examples, if anyone is interested). A well made fake from an already good lossy file may be literally impossible to detect though.

https://www.head-fi.org/threads/fake...#post-14783460

It is now possible to completely fake a FLAC file, meaning you can take an MP3 and run it throught certain procedures and get a file with a full, lossless looking spectrum. There's no way to tell that't fake. Not many of those exists cause most people don't know how to fake them like that, but some do. And there's a website out there now what "restores" lossless files from MP3s. What a scam!

https://www.head-fi.org/threads/qobu...#post-15938411

"Please note. There are no refunds on purchased music in any circumstance. We strongly recommend listing to the music in the streaming service before making your purchase if you doubt you will be happy with your purchase. The record labels do not allow for returns. There are no exceptions to this rule. I am very sorry."

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但是個別串流平台還是相當「好玩」的說，例如 DoubleDouble／Lucida／SQUID.WTF 可以無限下載完全免費的 FLAC 檔案。