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Re: [ARSCLIST] 2GB limit for audio file formats
I just got this off of the "Hydrogenaudio Forum Discussion" :
Mar 17 2005, 03:35 AM
QUOTE(ChiGung @ Mar 17 2005, 03:40 AM)
The common wav header can only allocate 4 bytes to state the total wav
length in bytes which will be why there's a two Gig limit.
This isn't quite correct. It is true that the file length in the WAV
header is a 4 byte integer, but it's an *unsigned* number, which means
that the maximum size of a WAV file is actually 4GB, not 2GB.
Some audio programs get this wrong, and interpret the file length as a
signed number, thus imposing a 2GB limit. I can confirm that Wave
Repair supports WAV files up to 4GB, and if used just for recording
it's free. And I see someone else has pointed out that Audacity (also
free) will also go above 2GB.
Hope this helps.
Family Theater Productions
Alec McLane wrote:
We are recording (mostly) analog tapes to disk at a sampling rate of
88.2KHz and 24-bit resolution, using Peak 4.0 on a G5 running OS 10.3.5.
While the files are for archival purposes, to make listening copies of
these recordings we bump them down to 44.1KHz to burn to CD. For the
archival files, however, we are encountering the 2GB limit for 32-bit
file formats, which at that resolution only allows around 65-70 min. of
music. I'm told this is a limit built into the standards for most audio
files - WAV, AIFF, Sound Designer, etc., established by Microsoft, Apple,
and Digidesign, respectively.
While this is enough to record, say, one side of a cassette tape, it may
not be enough for a 10" reel at 3 3/4 ips, nor is it enough for those few
occasions when we record from 95- or 125-min DATs. The virtue of Peak 4.0
is that it allows burning a "playlist" to CD from regions defined
single file, and doesn't require the saving of smaller files in order to
make a CD from the recording. But it has the disadvantage of just
the recording at the 2GB limit, without at least opening up a new file to
continue, so many recordings get truncated and we have to figure out
it stopped and begin a new file manually.
In addition to the recording problem, the idea of storing a complete
or at least a side of a tape, as a single file in archival-quality format
on a server is appealing, just for its simplicity. So even recording
separate files and then merging them within Peak just to burn a CD is
not an ideal solution, although for the time being it seems the only one.
Has anyone else found solutions to this problem with other software?
Scores & Recordings/
World Music Archives Phone: (860) 685-3899
Olin Library Fax: (860) 685-2661
Wesleyan University mailto:amclane@xxxxxxxxxxxx
Middletown, CT 06459 http://www.wesleyan.edu/libr/srhome/srdir.htm