加油

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:P

Re: Re: 圖呢?
 

首先音質是一個很難有客觀標準的東西
再來讀機(CDROM or a high end CDplayer or whatever)
可以有很大的影響

在機X 上音質好的
在機Y 上音質不一定好

http://www.exactaudiocopy.de/eac3.html
最下面有CD列表...只要有下列任一片CD...便可以自動偵測光碟機offset...
我個人是用鐵達尼電影原聲帶做測試....某些台版壓片無效....

關於EAC設定教學就先看看下面這個網站...
http://www.ping.be/satcp/eac01.htm#-
今天感冒人不舒服...等病好了在寫簡單一點的說明...

有部分的人, 就是為了要講究音質, 才要玩燒錄片的啊. :)

我自己研究過的是 EAC 部分和 Audiomaster 部分. plextor CD-Rom 有一點點了解, 不過沒經驗... 本篇 takuro 兄提到的片片的差異, 更是我還沒涉入的領域. 但是我已經由實際聆聽的經驗發現, 以上每一個環節, 都藏有影響最後聽感的變因...

我相信燒出來的片子是可以在音想上放出更好的聲音的. 我可沒講說是燒錄片上的數位音訊好過原版片喔...

anyway, CRW-F1 還沒入手, 不好意思一直講推測的事. 等實際上作過了... 還有小弟的轉學考告一段落... 再來好好發表一下心得吧...

wolfspring兄考完麻煩發表一下Audiomaster的使用心得
我想應該有很多人對這個東西很有興趣:)

Some other variables to consider.......
 

one of the the more obscure factor is the room temperature since the emission frequency of most lasers are temperature sensitive. Now this creates 2 problems.

1: is the focusing of the laser, since usually the lens of the pickup is fixed, the size of the laser spot projected on the Dye will vary with the frequency, when the laser spot is too big, you've got a problem.

2: The dyes have different sensitivities to laser power at different
light wavelengths. So the optimum recording window of a dye formulation might be missed, besides the fact that the optimum recording power changes with frequency of the laser.

OPC (Optimum Power Calibration) can solve some of these problems but not completely.

The same factor can influence the CD DA reading process.....

And of course the power-supply issue is important, even during hte playback phase.

So we've got

Media, software, Cables used, Recording setup, Reading setup, enviromental conditions, etc. as significant variables to this test.

>_<

Takuro: so where are the Datas???



:confused: :confused: :confused:

Re: Some other variables to consider.......
 

It's very difficult to control these variables even in Lab., I think.
But at least the twice calculations of the signature on the same disk get the identical result; so I think the experiment is still reliable to some extend.
The Data..., maybe I should put the 1st track wav files of these disks onto a CDR and send it to someone who interests in it, but I think the data are not enough to determine whether the quality of audio varies from one cdr to the others....

Some related links...

http://www.cloversystems.com/Quality%20Basics.htm

http://www.cd-genie.com/qc/verisnot.htm

http://www.digital-recordings.com/cdcheck/cdcheck.html

http://www.pioneer.co.jp/crdl/rd/11-3e.html

http://netcity1.web.hinet.net/UserData/air4250/cdr.htm

So some more point to make

Low C1/Bler may not imply the cd is good sounding (but is very good for Data storing)
High C1/Bler will result in distorted sound
A good sounding CD will have a low error rate (c1/Bler)

and yes this is stupid.....