A while ago I told Metalabyss I would research the plausibility of accepting EAC's
Burst Mode as an acceptable method of accurately ripping CDs. I understand that this has been discussed and directed before, and so I hope that the information I am presenting is supplementary to that provided before and thus more convincing.
The results of my findings is that
Burst Mode is a plausible acceptable alternative to Secure Mode, but
only on the conditions;
1) The rip is done using EAC 1.0 or later, and all settings are correct per this guide (noting the burst mode-specific instructions here)
2) The rip is done using Test & Copy, anda) the CRCs of the test and copy runs match OR
b) The rip contains mismatched CRCs or "unverified sectors" but is verified by the AccurateRip database (the existence of "unverified sectors" does not mean the rip is inaccurate, only that the
3) The log contains a checksum and has not been edited
4) If the rip is not "100% accurate" (i.e. CRCs do not match and rip has not been verified by AccurateRip database), user should rip again using Secure ModeThis recommendation is based on the fact that the purpose of Secure Mode is to rip CDs which are old, dirty, or cannot be successfully ripped using Burst Mode, as
suggested by EAC's creator Andre Wiethoff. For some CDs, in my only personal experience, secure mode takes average of 1 hour per CD (sometimes in excess of 2 or even 3 hours), whereas the average time for burst mode rips is 20 minutes or less. For users who are ripping large libraries of CDs (others amongst asch, hjknight and myself whom have over 300个碟子), this time difference is very significant
However,
I do not mean to propose that all burst mode rips should be accepted, only that Burst Mode rips can provide the same degree of accuracy as rips done in Secure Mode if using correct settings whilst taking a lot less time.
Additionally, I note that a change in rules puts additional pressure on moderators, hence I suggest that
this tool would be an effective way for moderators to quickly check the validity of burst mode rips, and that in then event of any inconsistencies the burden of proof should lie on the uploader.
Whilst Burst Mode cannot provide the same consistency in accuracy as Secure Mode (occasionally even CDs do not rip properly), this can be easily verified by checking the log. I would suggest that if ASTOST staff were to allow those who are willing to configure their settings correctly and
check their own logs to use Burst Mode, a lot of time can be saved when uploading large quantities of CDs
I understand that the views of ASTOST staff may well be different to my own, and so hope this information is at least educational if not compellingthanks ~
小彭
edit - For reference,I have ripped the same CD in both Secure Mode and Burst Mode and provided the resulting logs
Secure Mode~
折叠此处内容
Exact Audio Copy V1.0 beta 3 from 29. August 2011
EAC extraction logfile from 18. October 2013, 1:24
敬善媛 / 如来云水月
Used drive : TSSTcorpCDDVDW SE-208DB Adapter: 1 ID: 0
Read mode : Secure
Utilize accurate stream : Yes
Defeat audio cache : No
Make use of C2 pointers : No
Read offset correction : 6
Overread into Lead-In and Lead-Out : No
Fill up missing offset samples with silence : Yes
Delete leading and trailing silent blocks : No
Null samples used in CRC calculations : Yes
Used interface : Native Win32 interface for Win NT & 2000
Gap handling : Appended to previous track
Used output format : User Defined Encoder
Selected bitrate : 1024 kBit/s
Quality : High
Add ID3 tag : Yes
Command line compressor : C:\Program Files (x86)\Exact Audio Copy\Flac\flac.exe
Additional command line options : -8 -V -T "ARTIST=%artist%" -T "TITLE=%title%" -T "ALBUM=%albumtitle%" -T "DATE=%year%" -T "TRACKNUMBER=%tracknr%" -T "GENRE=%genre%" -T "PERFORMER=%albuminterpret%" -T "COMPOSER=%composer%" %haslyrics%--tag-from-file=LYRICS="%lyricsfile%"%haslyrics% -T "ALBUMARTIST=%albumartist%" -T "DISCNUMBER=%cdnumber%" -T "TOTALDISCS=%totalcds%" -T "TOTALTRACKS=%numtracks%" -T "COMMENT=%comment%" %source% -o %dest%
TOC of the extracted CD
Track | Start | Length | Start sector | End sector
---------------------------------------------------------
1 | 0:00.00 | 10:07.72 | 0 | 45596
2 | 10:07.72 | 4:32.21 | 45597 | 66017
3 | 14:40.18 | 4:21.66 | 66018 | 85658
4 | 19:02.09 | 4:04.73 | 85659 | 104031
5 | 23:07.07 | 5:15.08 | 104032 | 127664
6 | 28:22.15 | 1:37.07 | 127665 | 134946
7 | 29:59.22 | 10:07.72 | 134947 | 180543
8 | 40:07.19 | 4:32.21 | 180544 | 200964
9 | 44:39.40 | 4:21.66 | 200965 | 220605
10 | 49:01.31 | 4:04.73 | 220606 | 238978
11 | 53:06.29 | 5:15.08 | 238979 | 262611
12 | 58:21.37 | 1:35.07 | 262612 | 269743
Track 1
Filename C:\EAC\如来云水月\01. 大悲咒 ~ Mantra of Chenrezig - 敬善媛.wav
Pre-gap length 0:00:02.00
Peak level 100.0 %
Extraction speed 2.3 X
Track quality 100.0 %
Test CRC 588DFFD4
Copy CRC 588DFFD4
Track not present in AccurateRip database
Copy OK
Track 2
Filename C:\EAC\如来云水月\02. 药师咒 ~ Medicine Buddha Mantras - 敬善媛.wav
Pre-gap length 0:00:02.00
Peak level 100.0 %
Extraction speed 2.5 X
Track quality 99.9 %
Test CRC 168DA699
Copy CRC 168DA699
Track not present in AccurateRip database
Copy OK
Track 3
Filename C:\EAC\如来云水月\03. 准提神咒 ~ Zhunti Buddha - 敬善媛.wav
Pre-gap length 0:00:01.97
Peak level 100.0 %
Extraction speed 2.8 X
Track quality 100.0 %
Test CRC 12188AA8
Copy CRC 12188AA8
Track not present in AccurateRip database
Copy OK
Track 4
Filename C:\EAC\如来云水月\04. 辩才天 ~ Sarasvati Devi Mantra - 敬善媛.wav
Pre-gap length 0:00:02.00
Peak level 100.0 %
Extraction speed 3.0 X
Track quality 100.0 %
Test CRC A0646E1F
Copy CRC A0646E1F
Track not present in AccurateRip database
Copy OK
Track 5
Filename C:\EAC\如来云水月\05. 心经 ~ Xin Jing - 敬善媛.wav
Pre-gap length 0:00:02.00
Peak level 68.0 %
Extraction speed 3.2 X
Track quality 100.0 %
Test CRC D579A29B
Copy CRC D579A29B
Track not present in AccurateRip database
Copy OK
Track 6
Filename C:\EAC\如来云水月\06. 上师久住祈请文 ~ Gu Lu Bei - 敬善媛.wav
Pre-gap length 0:00:01.98
Peak level 60.8 %
Extraction speed 3.2 X
Track quality 100.0 %
Test CRC 6C21A8B7
Copy CRC 6C21A8B7
Track not present in AccurateRip database
Copy OK
None of the tracks are present in the AccurateRip database
No errors occurred
End of status report
==== Log checksum FD4486D99A29EF2EC3A12AE73EE05AFC5C8DC00C4355B9953B1EDA64BADC7AB9 ====
Burst Mode ~
折叠此处内容
Exact Audio Copy V1.0 beta 3 from 29. August 2011
EAC extraction logfile from 17. October 2013, 21:15
敬善媛 / 如来云水月
Used drive : TSSTcorpCDDVDW SE-208DB Adapter: 1 ID: 0
Read mode : Burst
Read offset correction : 6
Overread into Lead-In and Lead-Out : No
Fill up missing offset samples with silence : Yes
Delete leading and trailing silent blocks : No
Null samples used in CRC calculations : Yes
Used interface : Native Win32 interface for Win NT & 2000
Gap handling : Appended to previous track
Used output format : User Defined Encoder
Selected bitrate : 1024 kBit/s
Quality : High
Add ID3 tag : Yes
Command line compressor : C:\Program Files (x86)\Exact Audio Copy\Flac\flac.exe
Additional command line options : -8 -V -T "ARTIST=%artist%" -T "TITLE=%title%" -T "ALBUM=%albumtitle%" -T "DATE=%year%" -T "TRACKNUMBER=%tracknr%" -T "GENRE=%genre%" -T "PERFORMER=%albuminterpret%" -T "COMPOSER=%composer%" %haslyrics%--tag-from-file=LYRICS="%lyricsfile%"%haslyrics% -T "ALBUMARTIST=%albumartist%" -T "DISCNUMBER=%cdnumber%" -T "TOTALDISCS=%totalcds%" -T "TOTALTRACKS=%numtracks%" -T "COMMENT=%comment%" %source% -o %dest%
TOC of the extracted CD
Track | Start | Length | Start sector | End sector
---------------------------------------------------------
1 | 0:00.00 | 10:07.72 | 0 | 45596
2 | 10:07.72 | 4:32.21 | 45597 | 66017
3 | 14:40.18 | 4:21.66 | 66018 | 85658
4 | 19:02.09 | 4:04.73 | 85659 | 104031
5 | 23:07.07 | 5:15.08 | 104032 | 127664
6 | 28:22.15 | 1:37.07 | 127665 | 134946
7 | 29:59.22 | 10:07.72 | 134947 | 180543
8 | 40:07.19 | 4:32.21 | 180544 | 200964
9 | 44:39.40 | 4:21.66 | 200965 | 220605
10 | 49:01.31 | 4:04.73 | 220606 | 238978
11 | 53:06.29 | 5:15.08 | 238979 | 262611
12 | 58:21.37 | 1:35.07 | 262612 | 269743
Track 1
Filename C:\EAC\如来云水月\01. 大悲咒 ~ Mantra of Chenrezig - 敬善媛.wav
Pre-gap length 0:00:02.00
Peak level 100.0 %
Extraction speed 11.2 X
Test CRC 588DFFD4
Copy CRC 588DFFD4
Track not present in AccurateRip database
Copy OK
Track 2
Filename C:\EAC\如来云水月\02. 药师咒 ~ Medicine Buddha Mantras - 敬善媛.wav
Pre-gap length 0:00:02.00
Peak level 100.0 %
Extraction speed 5.8 X
Test CRC 168DA699
Copy CRC 168DA699
Track not present in AccurateRip database
Copy OK
Track 3
Filename C:\EAC\如来云水月\03. 准提神咒 ~ Zhunti Buddha - 敬善媛.wav
Pre-gap length 0:00:01.97
Peak level 100.0 %
Extraction speed 6.2 X
Test CRC 12188AA8
Copy CRC 12188AA8
Track not present in AccurateRip database
Copy OK
Track 4
Filename C:\EAC\如来云水月\04. 辩才天 ~ Sarasvati Devi Mantra - 敬善媛.wav
Pre-gap length 0:00:02.00
Peak level 100.0 %
Extraction speed 6.6 X
Test CRC A0646E1F
Copy CRC A0646E1F
Track not present in AccurateRip database
Copy OK
Track 5
Filename C:\EAC\如来云水月\05. 心经 ~ Xin Jing - 敬善媛.wav
Pre-gap length 0:00:02.00
Peak level 68.0 %
Extraction speed 7.0 X
Test CRC 074447FC
Copy CRC 074447FC
Track not present in AccurateRip database
Copy OK
Track 6
Filename C:\EAC\如来云水月\06. 上师久住祈请文 ~ Gu Lu Bei - 敬善媛.wav
Pre-gap length 0:00:01.98
Peak level 60.8 %
Extraction speed 6.8 X
Test CRC 6C21A8B7
Copy CRC 6C21A8B7
Track not present in AccurateRip database
Copy OK
None of the tracks are present in the AccurateRip database
No errors occurred
End of status report
==== Log checksum 912875F09AE072F15ED9C1F9A0245A78E8B0E10D01CB6CF520A483B9FCE24DD4 ====
For this CD, Burst Mode took about half the amount of time with the same resulting level of accuracy
[ 此帖被lemphek在2013-10-18 01:33 AM重新编辑 ]