Hydrogenaudio Forums > CDDA with probability 100%

Full Version: CDDA with probability 100%

Hydrogenaudio Forums > Lossless Audio Compression > Lossless / Other Codecs

shafff

Sep 1 2005, 11:02

Have anybody saw that auCDtect says CDDA 100% for lossy-source wav?
What are the chances? (if we forget about definition of a probability)

For example i have Kool.&.The.Gang.-.Emergency (from ed2k) and 4,5,6 tracks are MPEG 95%

QUOTE

Processing file: [04-Cherish.wav]
Detected average hi-boundary frequency: 1.862563e+004 Hz
Detected average lo-boundary frequency: 1.653065e+004 Hz
Detected average hi-cut frequency: 1.847759e+004 Hz
Detected average lo-cut frequency: 1.649172e+004 Hz
Maximum probablis boundary frequency: 1.670200e+004 Hz
Coefficient of nonlinearity of a phase: 3.310258e-002
First order smothness: 8.538012e-001
Second order smothness: 7.514620e-001

QUOTE

Processing file: [02-Fresh.wav]
Detected average hi-boundary frequency: 2.101260e+004 Hz
Detected average lo-boundary frequency: 1.692635e+004 Hz
Detected average hi-cut frequency: 2.156598e+004 Hz
Detected average lo-cut frequency: 1.952485e+004 Hz
Maximum probablis boundary frequency: 2.139600e+004 Hz
Coefficient of nonlinearity of a phase: 4.401537e-001
First order smothness: 5.401929e-001
Second order smothness: 6.784566e-001

In this case i suppose the album was compiled from other audiocd and mp3 compilations

Jan S.

Sep 1 2005, 12:08

Please post the whole log.
I've seen often that some tracks are identified incorrectly but using the -d switch to get a summary of the whole album seems to be quite reliable.

shafff

Sep 1 2005, 12:12

if i aucdtect whole album (1 file, 370mb), it says MPEG 95%, but if i aucdtect -d splitted tracks (7 files) it says CDDA 100%

i can post complete log if you still want it

Jan S.

Sep 1 2005, 12:33

Well, I'm not the author so I can't really help you. But I don't understand what it is you want... If you got it off emule you don't know the correct result so no bug/problem with the analysis can be corrected.
The website has stats on the chance of incorrect results: http://www.true-audio.com/analyzer.tests

shafff

Sep 1 2005, 12:54

ok, sorry then

shafff

Sep 2 2005, 01:21

QUOTE(shafff @ Sep 1 2005, 07:02 PM)

Have anybody saw that auCDtect says CDDA 100% for lossy-source wav?

btw if i'm right, the probability auCDtect gives is based upon the tests (http://www.true-audio.com/analyzer.tests), so if P=75% it means that 75 out of 100 discs _with such sound parameters_ were truly CDDA
if i'm wrong, please correct me

CDDA 100%:
http://users.iptelecom.net.ua/~shafff/02.PNG
MPEG 95%:
http://users.iptelecom.net.ua/~shafff/04.PNG

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