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Old 08-04-2012, 01:54 AM   #1
stf92
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Lagging turntable?


I have a .flac file. When running mplayer on it, the music is heard out of tune. When I expect a given note to be 440Hz it is 311Hz, a difference easily detected by the human ear. In fact, it is about the difference between a C and a B, that is, C sounds like B. But this .flac has been transcripted froma vinyl record into the .flac by the uploader. He uses state-of -the-art equipment for the transcriptions. How can this be? Only explanation is his turntable was lagging!
 
Old 08-04-2012, 01:37 PM   #2
NyteOwl
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If he didn't hear it on turntable playback, the other option may be that some lag god introduced in the recording process. Have him check his .flac playback against the original.

Assuming there IS some slippage in the TT, most good recording software should be able to compensate (though it's better done with the playback equipment itself.
 
Old 08-04-2012, 01:43 PM   #3
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Moderated

Last edited by XavierP; 08-06-2012 at 04:24 PM.
 
Old 08-04-2012, 03:21 PM   #4
stf92
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I won't bother even to answer.
 
Old 08-04-2012, 04:19 PM   #5
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user "skyer_biz" reported
 
Old 08-04-2012, 04:54 PM   #6
stf92
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Thanks.
 
Old 08-06-2012, 02:46 PM   #7
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This may be related to the sampling rate used not being what is reported in the file header.
 
Old 08-06-2012, 02:50 PM   #8
stf92
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So, the work of an aficionado. Add to this the high sensitivity level used in the take from the vynil, and I have that only trusted people material is what can be downloaded.
 
Old 08-09-2012, 05:33 AM   #9
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Quote:
Originally Posted by stf92 View Post
But this .flac has been transcripted froma vinyl record into the .flac by the uploader. He uses state-of -the-art equipment for the transcriptions. How can this be? Only explanation is his turntable was lagging!
Nope, a 'lagging turntable' isnt the only possible answer (and would be very, very , very lazy of the file creator to not check the files work before uploading).

I'd assume that being a LP rip, its 24bit/96KHz (or higher) rip. Which is where I've heard of 'playing slow' problems with flac files on linux before.

http://forums.slimdevices.com/showth...-flac-playback

I'd try VLC and see if the problem exists there as well.

You could also check if your sound card supports 24bit and/or 96KHz.

cat /proc/asound/card0/codec#0

Code:
Default PCM:
    rates [0x560]: 44100 48000 96000 192000
    bits [0xe]: 16 20 24
 
Old 08-09-2012, 06:47 AM   #10
stf92
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Quote:
Originally Posted by cascade9 View Post
Nope, a 'lagging turntable' isnt the only possible answer (and would be very, very , very lazy of the file creator to not check the files work before uploading).

I'd assume that being a LP rip, its 24bit/96KHz (or higher) rip. Which is where I've heard of 'playing slow' problems with flac files on linux before.

http://forums.slimdevices.com/showth...-flac-playback

I'd try VLC and see if the problem exists there as well.

You could also check if your sound card supports 24bit and/or 96KHz.

cat /proc/asound/card0/codec#0

Code:
Default PCM:
    rates [0x560]: 44100 48000 96000 192000
    bits [0xe]: 16 20 24
The uploader explicitly states 44.1kHz. So, I don't think the problem is there.
 
Old 08-10-2012, 01:16 PM   #11
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That only tells you what he "thinks". Lets not overstate the evidence.
 
Old 08-10-2012, 01:20 PM   #12
stf92
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Code:
semoi@darkstar:/mnt/cd0/Bach/Partitas_violin/PARTITA_2$ file Bach_Kuijken_Partita_IIb_24-bit-cr.flac 
Bach_Kuijken_Partita_IIb_24-bit-cr.flac: FLAC audio bitstream data, 24 bit, stereo, 44.1 kHz, 29833652 samples
From the uploader:
Quote:
This is a 24-bit/44.1 kHz transcription using high-end analog equipment of a performance by Sigiswald Kuijken on baroque violin of J.S. Bach's second sonata and partita for solo violin. The violin was made by Giovanni Grancino circa 1700 and has been restored to baroque specifications.

The recording was engineered by Dr. Thomas Gallia, Paul Dery, and Monika Werner at Artimino Villa dei Medici in December 1981, and released as part of a 3LP set by Deutsche Harmonia Mundi in 1983 (DHL 20401.03). The CD reissue is long out of print, and used copies sell for lamentably high prices.

This is a very clear and clean recording in a moderately resonant space, bringing out every nuance of the violin's timbre. The LP is in immaculate condition, and there is virtually no tracking distortion at all. The torrent includes a zip archive with scans of the booklet notes in French from the LP set. I have already transcribed the first sonata and partita and hope eventually to transcribe the third, so stay tuned.

I have recently uploaded several other 24-bit LP transcriptions of comparable quality, and will be doing more in the near future. You can find them by clicking on my user id.

Equipment used for A/D conversion: Lyra Helikon phono cartridge, Linn LP12/Lingo turntable, Linn Ittok tonearm, Audioquest LeoPard tonearm cable, PS Audio PS2 preamplifier, Kimber PBJ interconnect, M-Audio Audiophile USB A/D converter.

01 - Sonata II in a, BWV 1003 Grave - Fuga - Andante - Allegro [21:55]

02 - Partita II in d, BWV 1004 Allemande - Courante - Sarabande - Gigue [14:30] Chaconne [11:16]

NOTE: To the best of my knowledge, this recording is not currently available commercially. If you know otherwise, please let me know ASAP, as I do not wish any artists to be deprived of the royalties that they so richly deserve.

Last edited by stf92; 08-10-2012 at 01:48 PM.
 
Old 08-11-2012, 10:50 AM   #13
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Quote:
Originally Posted by stf92 View Post
The uploader explicitly states 44.1kHz. So, I don't think the problem is there.
I've heard of it with not just 24/96, but also with 'just' 24bit or 48/96KHz.

Have you tried different media players, tested/analyzed the flac files....done a manual check on the ffp (flac finger print) file that was packaged with the torrent?
 
Old 08-11-2012, 11:32 AM   #14
stf92
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Quote:
Originally Posted by cascade9 View Post
I've heard of it with not just 24/96, but also with 'just' 24bit or 48/96KHz.

Have you tried different media players, tested/analyzed the flac files....done a manual check on the ffp (flac finger print) file that was packaged with the torrent?
In post #12 there is the output of the file command, which shows the file it's a 44.1kHz transcription. And I have run 'flac -t <flac_file>' successfully (it tests the file). The tests have been made with MPlayer and play. They both play it a whole semitone lower than true pitch, although I think they are working correctly. As to the finger print, I did not keep the .ffp unluckily.

From the data dumped by 'flac --analyze <flac_file>' I cannot gather much as all that is basically greek to me but would appreciate help. What I can do is try to download it again to get the .ffp. In case you we do not trust the file command, we get:
Code:
semoi@darkstar:/mnt/cd0/Bach/Partitas_violin/PARTITA_2$ metaflac --show-sample-rate Bach_Kuijken_Partita_IIb_24-bit-cr.flac 
44100
 
Old 08-17-2012, 04:33 AM   #15
cascade9
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It probably IS a 44.1KHz file...but you cant trust the file command (if the flac version you have is old enough, or has some bug with 24bit and/or 48/96/etc KHz files, then running the file command will just show you the same mistake)

Test it with a different media player....preferably a different media player on a different OS. I'd try foobar2000 version on windows if possible.
 
  


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