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#31
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Re: More about offsets?
Alright, thanks
From what I read, offsets aren't really a big deal anyway because most drives have positive offsets, which forces them to go into the lead out, and only a few drives like Plextors can read into the lead out, so with most drives you end up with silent blocks in those sections. So it seems to me in those cases, the front of the file is properly corrected, but the end isn't. Of course, in many cases, there's silence at the end anyway, so it doesn't really matter. No members have liked this post.
Last edited by tgc225; 2005-04-22 at 09:36 PM. |
#32
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Re: More about offsets?
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and yeah, I think what you say about the lead out sounds about right to me. There's also SHNtool cmp mode optional arguments which I haven't tried that I have a feeling might be useful. Has anybody used these before? cmp mode optional arguments -s Check to see whether the WAVE data contained in the input files are identical modulo a byte-shift. Currently, this will only detect differences up to the first 529200 bytes (equal to 3 sec- onds of CD-quality data). This can be used to compare WAVE data within a pre-burned file to WAVE data in the corresponding track ripped from the burned CD, which is useful if the ripped track came from a CD burned TAO, and thus might have a 2-second gap of silence at the beginning. This option can also help identify a CD burner/CD reader combined read/write offset. -l List offsets and values of all differing bytes. Output is simi- lar to 'cmp -l'; in particular, offsets are 1-based. Can be used with the -s switch. -f fuzz Sets the "fuzz factor" for determining whether byte-shifted data is identical. fuzz is a positive integer that represents the maximum number of allowable byte mismatches between the two files in the area searched by the -s option. This allows one to check for differing bytes between to files that (a) are byte- shifted and (b) contain at least one error in the area searched by the -s option. The higher the fuzz factor, the longer the search takes, so set it low to begin with (8 or so), and increase it in small steps if needed. NOTE: this switch can only be used with the -s switch.
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Checksums Demystified | ask for help in Technobabble thetradersden.org | ttd recommended free software/freeware webring shntool tlh eac foobar2000 spek audacity cdwave vlc Quote:
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#33
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Re: More about offsets?
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I read around on HydrogenAudio, and it seems most recommend setting the read offset correctly, since it's so easy to do. At that point, your file will be virtually identical. No members have liked this post.
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#34
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Re: More about offsets?
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I've configured EAC quite some time ago and my settings has Overread into Lead-Out and Lead-In checked. Reading your post and mentioning the fact that most drives can't over read I'm having second thoughts about it being correct. Can I test my drive if it's capable of overreading without having to configure EAC from scratch? And if so, how? No members have liked this post.
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#35
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Re: More about offsets?
here's how you test your configuration:
I've heard that it is not possible to get it perfect on all systems, but I got it perfect on mine so I hope this helps you out. instructions for setting offsets and generating checksums are in my signature\/ \/ \/
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Checksums Demystified | ask for help in Technobabble thetradersden.org | ttd recommended free software/freeware webring shntool tlh eac foobar2000 spek audacity cdwave vlc Quote:
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#36
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Re: More about offsets?
Thanks Five. I did configure EAC when I first got acquainted with it back in 2004 and haven't changed the settings since then. What I was concerned with after reading uhclem's post was this:
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