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james of tucson
Guest
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 Posted:
Wed Dec 01, 2004 12:06 am Post subject:
Re: 2 Gb max file size...grrrr! |
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On 2004-11-29, S O'Neill <nopsam@nospam.net> wrote:
| Quote: | And 16-bit half that, 24-bit 1/3 that.
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Forgive me if I'm misinformed, but aren't 24-bit WAV's actually stored
on 32-bit word boundaries?
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Peter Larsen
Guest
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| Posted:
Wed Dec 01, 2004 12:06 am Post subject:
Re: 2 Gb max file size...grrrr! |
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Arny Krueger wrote:
| Quote: | Begs the question why waste disk space using such a high
sample rate?
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Arny, I don't like that kind of "flat rate assertions", generally the AD
converters I am familiar with sound cleaner the higher the sample rate.
| Quote: | Odds are good that you are going to burn these files to a CD.
CD is limited to 24/96. [Yes, you meant to type 16/44.1 ..)
There is no known advantage to recording at such a vastly higher
sample rate then you would be distributing the music at.
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First of all there was an AES recommendation quite some time ago,
someone may remember the details better than I, to the effect that one
should record at 48 or a clean multiple thereof for optimum quality with
future means of distribution. DVD Audio is just a few feet of track away
and recording with it in mind is obviously relevant.
| Quote: | There are also no known advantages to distributing music at 24/96,
given the limitations of human ears and most audio gear.
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Assuming minimal - or none - processing of the audio the main quality
degradation is in conversion (transducers not considered) from analog to
digital and back. My experience - subjectively evaluated - suggest that
the cleanest possible AD conversion and a high quality sample rate
conversion gives the cleanest possible sound from the final CD.
| Quote: | My question....how to increase that file size limit to cope
with any foreseeable live performance scenarios in future ?
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This is non-simple, but if the question is whether you can increase the
possible file size of the software you have the answer is: not at all
likely. An updated version may be able to help you, toss a support email
in the general direction of support@software-vendor.com.
There is software out there that will do single files of size 4 GB, and
you can probably also double your recording time by recording two mono
tracks as discrete files in multitrack mode rather than one stereo track
if the application in question permits that strategy.
| Quote: | Thanks for your advice and guidance,
Seems like you should either change your procedures or your
software.
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I can't recall if the OS was mentioned, however software that allows
only 2 GB file size is plain broken, 4 GB files are possible on FAT32
running Win9x and using Cool Edit. Changing the file system to NTFS,
usually that necessitates selecting an NT family OS, will increase max
file size to 64 terabytes. My understanding is that this is because the
file system uses 64 bit math. My understanding is also that it is unwise
to try to record files larger than 4 GB's in Audition, it was probably
version 1.0 I had falling over the edge of the cliff of wrapping.
For some reason software limitations are less well explained than
software virtues, it could be useful to all to check how the actual
software on the actual OS behaves as filesize increases beyond 2 and 4
GB.
Considering the risk of a totally corrupted file it is btw. quite benign
that the software in question simply drops out of recording and explains
why, but it is indeed puzzling that it abandons ship at 2 GB instead of
doing it at 4 GB ...
Kind regards
Peter Larsen
--
*******************************************
* My site is at: http://www.muyiovatki.dk *
******************************************* |
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S O'Neill
Guest
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| Posted:
Wed Dec 01, 2004 6:08 am Post subject:
Re: 2 Gb max file size...grrrr! |
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Logan Shaw wrote:
| Quote: | james of tucson wrote:
On 2004-11-29, S O'Neill <nopsam@nospam.net> wrote:
And 16-bit half that, 24-bit 1/3 that.
Forgive me if I'm misinformed, but aren't 24-bit WAV's actually stored
on 32-bit word boundaries?
According to http://www.borg.com/~jglatt/tech/wave.htm (which
isn't exactly authoritative, but does contain lots of info about
wav files that looks like it must've come from experience),
they aren't.
Apparently they are stored with samples rounded up to the nearest
multiple of 8 bits in little-endian format (least significant
byte first). So, a left channel sample of 0x123456 and a right
channel sample of 0xABCDEF would be stored as the byte sequence
{ 0x56, 0x34, 0x12, 0xEF, 0xCD, 0xAB }. They are signed integers,
though, so my hex notation doesn't make that clear, but that's
another issue.
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And your example shows 24-bit alignment, not 32. |
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Len Moskowitz
Guest
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| Posted:
Wed Dec 01, 2004 5:32 pm Post subject:
Re: 2 Gb max file size...grrrr! |
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Logan Shaw <lshaw-usenet@austin.rr.com> wrote:
| Quote: | Forgive me if I'm misinformed, but aren't 24-bit WAV's actually stored
on 32-bit word boundaries?
Apparently they are stored with samples rounded up to the nearest
multiple of 8 bits in little-endian format (least significant
byte first). So, a left channel sample of 0x123456 and a right
channel sample of 0xABCDEF would be stored as the byte sequence
{ 0x56, 0x34, 0x12, 0xEF, 0xCD, 0xAB }. They are signed integers,
though, so my hex notation doesn't make that clear, but that's
another issue.
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Adobe Audition and other desktop/laptop DAW applications allow you to
read and write 24-bit audio files in both 3-byte and 4-byte formats.
On PDAs, in the interest of saving space and reducing data write time,
all of the PDAudio applications use 3-byte format.
--
Len Moskowitz PDAudio, Binaural Mics, Cables, DPA, M-Audio
Core Sound http://www.stealthmicrophones.com
Teaneck, New Jersey USA http://www.core-sound.com
moskowit@core-sound.com Tel: 201-801-0812, FAX: 201-801-0912 |
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Mike Rivers
Guest
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| Posted:
Wed Dec 01, 2004 6:11 pm Post subject:
Re: 2 Gb max file size...grrrr! |
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In article <coi875$90f$1@panix3.panix.com> moskowit@panix.com writes:
| Quote: | Golly, could you imagine a 24-channel snake hooked up to a PDA?
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Well, I guess you'd have to think of it as a PDA hooked up to a
24-channel snake. What's the accessory here anyway? <g>
--
I'm really Mike Rivers (mrivers@d-and-d.com)
However, until the spam goes away or Hell freezes over,
lots of IP addresses are blocked from this system. If
you e-mail me and it bounces, use your secret decoder ring
and reach me here: double-m-eleven-double-zero at yahoo |
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Carey Carlan
Guest
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| Posted:
Wed Dec 01, 2004 6:11 pm Post subject:
Re: 2 Gb max file size...grrrr! |
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mrivers@d-and-d.com (Mike Rivers) wrote in news:znr1101855993k@trad:
| Quote: |
In article <coi875$90f$1@panix3.panix.com> moskowit@panix.com writes:
Golly, could you imagine a 24-channel snake hooked up to a PDA?
Well, I guess you'd have to think of it as a PDA hooked up to a
24-channel snake. What's the accessory here anyway? <g
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Who needs a snake? Just tuck it in the breakout box and forget the cable. |
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Arny Krueger
Guest
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| Posted:
Wed Dec 01, 2004 6:11 pm Post subject:
Re: 2 Gb max file size...grrrr! |
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"Len Moskowitz" <moskowit@panix.com> wrote in message
news:coi875$90f$1@panix3.panix.com
| Quote: | Golly, could you imagine a 24-channel snake hooked up to a PDA?
|
While we are OT, heres how bizarrely Audition/CE handles large files. The
file can grow until its about 4 GB, at which time the software spontaneously
strips off the first 4 GB leaving a stub of what is ever left over. I don't
know if they've fixed this in later releases. |
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Len Moskowitz
Guest
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| Posted:
Wed Dec 01, 2004 6:11 pm Post subject:
Re: 2 Gb max file size...grrrr! |
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hank alrich <walkinay@thegrid.net> wrote:
| Quote: | Golly, could you imagine a 24-channel snake hooked up to a PDA?
Yeah, by a gigabit Ethernet cable? Cat 5 or something?
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That's the right approach. Now we just need a PDA that can handle that
many channels. Only a matter of time, I suppose.
--
Len Moskowitz PDAudio, Binaural Mics, Cables, DPA, M-Audio
Core Sound http://www.stealthmicrophones.com
Teaneck, New Jersey USA http://www.core-sound.com
moskowit@core-sound.com Tel: 201-801-0812, FAX: 201-801-0912 |
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Len Moskowitz
Guest
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| Posted:
Wed Dec 01, 2004 6:12 pm Post subject:
Re: 2 Gb max file size...grrrr! |
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Arny Krueger <arnyk@hotpop.com> wrote:
| Quote: | While we are OT, heres how bizarrely Audition/CE handles large files. The
file can grow until its about 4 GB, at which time the software spontaneously
strips off the first 4 GB leaving a stub of what is ever left over. I don't
know if they've fixed this in later releases.
|
Have you reported it to Adobe? If not, please do!
--
Len Moskowitz PDAudio, Binaural Mics, Cables, DPA, M-Audio
Core Sound http://www.stealthmicrophones.com
Teaneck, New Jersey USA http://www.core-sound.com
moskowit@core-sound.com Tel: 201-801-0812, FAX: 201-801-0912 |
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Arny Krueger
Guest
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| Posted:
Wed Dec 01, 2004 6:12 pm Post subject:
Re: 2 Gb max file size...grrrr! |
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"Len Moskowitz" <moskowit@panix.com> wrote in message
news:cokp30$j64$1@panix2.panix.com
| Quote: | Arny Krueger <arnyk@hotpop.com> wrote:
While we are OT, heres how bizarrely Audition/CE handles large
files. The file can grow until its about 4 GB, at which time the
software spontaneously strips off the first 4 GB leaving a stub of
what is ever left over. I don't know if they've fixed this in later
releases.
Have you reported it to Adobe? If not, please do!
|
It's been mentioned on their forum, even again recently. However, lots of
RAPers don't go there so I thought I'd provide a helpful caveat.
The adobeforums server name is adobeforums.com. Adobe's tech support will
give out the password to just about anybody. |
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hank alrich
Guest
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| Posted:
Wed Dec 01, 2004 6:12 pm Post subject:
Re: 2 Gb max file size...grrrr! |
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Len Moskowitz <moskowit@panix.com> wrote:
| Quote: | Golly, could you imagine a 24-channel snake hooked up to a PDA?
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Yeah, by a gigabit Ethernet cable? Cat 5 or something?
--
ha |
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