Coaxial 定 USB 好聲o的???

Wilmer威馬 · 發表於 2012-12-21 12:12

本帖最後由 Wilmer威馬於 2012-12-21 12:16 編輯

It is not about USB or coaxial or even firrewire, it is about the digital input/output interface.

Since computer is always a computer, even Mac, no computer's onboard/built-in/bundle digital input/output interface/circuit is 100% fully optimized for music production.

In most case USB or firewire sound better then computer's onboard coaxial or toslink output it is because the DDC (USB to coaxial/AES/BNC/I2S) circuit, even DAC built in with USB, there is also a stand alone section of DDC circuit, since right now no digital receiver or DAC chips can direct support USB, an outboard or onboard DDC is the same.

Considering pay much for a DDC or a DAC with USB (compare with non USB dac), it is ths same case as pay much for a good sound card for a better digital output interface, in cae you willing to spend at leadt $1K+ for a sound card to get a real good coaxial output, compare with a USB DAC which the DDC section worth more or less same as the sound card, coaxial will be better then USB actually.

However, DAC with USB is now too common, we don't need to pay for a sound card, it win because of marketing, but it don't means USB better then coaxial.

BTW, remember, coaxial is originally design for all high fequency (such as video) signal or digital signal transmission, USB is originally design for data pack transmission, there is nothing old or new, who dare to say vinly is outdated therefore not as good as digital because of developmemt limitations? But what vinyl originaly design for? And what digital media originally design for? It is all about marketing, we NEEDED to change not simply about good or worse.

obee · 發表於 2012-12-21 12:23

whitefang 發表於 2012-12-20 18:39
cas出coaxial也有很多種做法
mb spdif直出, 轉換器, sound card...
轉換器和sound card亦分很多級數, 由一 ...

如果無打算鑽研cas發揮到極限音質
還是選部usb技術成熟的dac行usb比較正路

Agree

Wilmer威馬 · 發表於 2012-12-21 12:32

On the other hand, even old techniqe still have rooms for improvement: When the fist release of 24/192 specification, no ordinary digital cable (coaxial or AES/EBU) could handle the banwidth, some hiend DAC such as first generation of dCS need to have 2 AES/EBU for handle high sampling rate bandwidth.

However, today even some DIY DAC's toslink could handle 24/192, which toslink originally limited to 24/96, it is because the interface circuit and components improved, of course the cost also "improved" to a higher standard, but all these cases proved that, it is not simply about the cable type, a good products =/= good selling products, USB connection can easily "PULL" more newbies into the so call CAS world, which actually stronger the hifi market, that's the real point!

Lester · 發表於 2012-12-21 14:27

Wilmer威馬發表於 2012-12-21 12:12
It is not about USB or coaxial or even firrewire, it is about the digital input/output interface.

S ...

即係話, 所有CAS 都離吾開 DDC 問題只係個DDC 係在部DAC機上面做, 在sound card 上做定係獨立一部DDC機上做 ?

又學到野, 比個 like 你

jackt · 發表於 2012-12-21 15:54

其實冇絶對話某一種傳輸制式好聲的，只要設計好，每一種都可以好聲。如果以為新制式一定好過舊的，事實亦非必然。本身傳送訊號要考慮好多東西(bandwidth, synchronization, error)，以現代設計來說，當然會用傳輸速度作比較，但兩聲道音樂資料只需用到很少頻寬，所以很少新傳輸設計會單單傳立體聲的，舊有的制式已經十分足夠，而且設計已經很成熟，好聲機會大很多。