Home |
Search |
Today's Posts |
#1
Posted to rec.audio.pro
|
|||
|
|||
M Audio digital recorder for long recordings?
Hi,,
I'm looking for a 2 channel digital recorder that will record WAV's for up to 8 hours. This seems perfect. http://www.dv247.com/invt/46157/prod...81_a_7c4 6157 M Audio says it will record files over 2Gb seamlessly, up to its maximum capacity of a 16Gb card. I'm guesssing it just records up to 8 2Gb files without data loss to stitch together in Post, which will be just fine. Does anyone have this model and can tell me if there are any caveats to doing this? Is it totally without gaps? Can't find anything from M Audio about the details. Cheers, Gareth. |
#2
Posted to rec.audio.pro
|
|||
|
|||
M Audio digital recorder for long recordings?
"Gareth Magennis" wrote in message ... Hi,, I'm looking for a 2 channel digital recorder that will record WAV's for up to 8 hours. This seems perfect. http://www.dv247.com/invt/46157/prod...81_a_7c4 6157 M Audio says it will record files over 2Gb seamlessly, up to its maximum capacity of a 16Gb card. I'm guesssing it just records up to 8 2Gb files without data loss to stitch together in Post, which will be just fine. Does anyone have this model and can tell me if there are any caveats to doing this? Is it totally without gaps? Can't find anything from M Audio about the details. Cheers, Gareth. Ah, just noticed the blurb say it records "2-channel WAV (BWF)". I Googled to find BWF does not have the 4Gb (2Gb for some programs) limit the WAV's have. Maybe that's it then. Gareth. |
#3
Posted to rec.audio.pro
|
|||
|
|||
M Audio digital recorder for long recordings?
Gareth Magennis wrote:
Ah, just noticed the blurb say it records "2-channel WAV (BWF)". I Googled to find BWF does not have the 4Gb (2Gb for some programs) limit the WAV's have. Maybe that's it then. The 2/4 GB limit for a WAV file has to do with how large any file can be under Windows (or maybe under FAT32). The problem with creating a file that's larger than that sensible limit is that you may not be able to do anything with it other than play it back on the machine that recorded it. If it automatically splits the file at a given length, I'm sure it doesn't lose any samples before starting the continuation in another file. My Korg MR-1000 starts a new file every 1 GB, my Mackie HDR24/96 starts a new file every 15 minutes, and they both paste together seamlessly. Nobody lectures nonstop for eight hours. Surely you can find some reasonable places to cut the recording into reasonable chunks. That's the sensible thing to do. -- If you e-mail me and it bounces, use your secret decoder ring and reach me he double-m-eleven-double-zero at yahoo -- I'm really Mike Rivers ) |
#4
Posted to rec.audio.pro
|
|||
|
|||
M Audio digital recorder for long recordings?
"Gareth Magennis" wrote in
message Ah, just noticed the blurb say it records "2-channel WAV (BWF)". I Googled to find BWF does not have the 4Gb (2Gb for some programs) limit the WAV's have. Maybe that's it then. BWFs have the same size limits as .wav files: Please see http://en.wikipedia.org/wiki/Broadcast_Wave_Format The short answer is: The 2 GB limit on .wav files comes from a 32 bit counter in the .wav file header. When the .wav file format was invented, people were still sizing hard drives in megabytes... BTW, the 32 bit counter can potentially handle 4 GB .wav files but not all software supports this feature. There is also a Sony wave files format called wav64 that replaces the 32 bit counter with a 64 bit counter, which faciliates considerably larger files. People have been circumventing the 2/4 GB size limit for years, maybe more than a decade. The general technique is to break data up into 2 GB segments and then come up with some way to logically string them together. Usually, a control file of some kind is used to do this. BTW, I'm so happy with my first edition Microtrak that I've never felt the need to upgrade. When I'm making really long recordings, I just use 192 kB MP3s. |
#5
Posted to rec.audio.pro
|
|||
|
|||
M Audio digital recorder for long recordings?
Mike Rivers wrote:
Gareth Magennis wrote: Ah, just noticed the blurb say it records "2-channel WAV (BWF)". I Googled to find BWF does not have the 4Gb (2Gb for some programs) limit the WAV's have. Maybe that's it then. The 2/4 GB limit for a WAV file has to do with how large any file can be under Windows (or maybe under FAT32). The problem with creating a file that's larger than that sensible limit is that you may not be able to do anything with it other than play it back on the machine that recorded it. If it automatically splits the file at a given length, I'm sure it doesn't lose any samples before starting the continuation in another file. My Korg MR-1000 starts a new file every 1 GB, my Mackie HDR24/96 starts a new file every 15 minutes, and they both paste together seamlessly. Nobody lectures nonstop for eight hours. Surely you can find some reasonable places to cut the recording into reasonable chunks. That's the sensible thing to do. Mike is absolutely correct in saying that the 2GB limit is a file system issue. CF "disks" use FAT32 which restricts - and I'm sure someone will correct me if I've got this wrong - individual files to a maximum of 2GB in size. A clue may be had from DV's faetures list which says, and I quote, "Multipart recording of files beyond 2Gb in size". That said, there are contradictions in their description . . for eaxmple, is the phantom power a genuine 48V, or only 30V? HTH, John. P.S. I rate DV very highly, have you been to their new Clapham store? It's not so convenient for me as their previous location was in Purley. |
#6
Posted to rec.audio.pro
|
|||
|
|||
M Audio digital recorder for long recordings?
"Mike Rivers" wrote in message ... Gareth Magennis wrote: Ah, just noticed the blurb say it records "2-channel WAV (BWF)". I Googled to find BWF does not have the 4Gb (2Gb for some programs) limit the WAV's have. Maybe that's it then. The 2/4 GB limit for a WAV file has to do with how large any file can be under Windows (or maybe under FAT32). The problem with creating a file that's larger than that sensible limit is that you may not be able to do anything with it other than play it back on the machine that recorded it. If it automatically splits the file at a given length, I'm sure it doesn't lose any samples before starting the continuation in another file. My Korg MR-1000 starts a new file every 1 GB, my Mackie HDR24/96 starts a new file every 15 minutes, and they both paste together seamlessly. Nobody lectures nonstop for eight hours. Surely you can find some reasonable places to cut the recording into reasonable chunks. That's the sensible thing to do. Unfortunately its continuously segue'd music and it needs to be set and left til it finishes, and will be net streamed as such. Cheers, Gareth. |
#7
Posted to rec.audio.pro
|
|||
|
|||
M Audio digital recorder for long recordings?
"Arny Krueger" wrote in message . .. "Gareth Magennis" wrote in message Ah, just noticed the blurb say it records "2-channel WAV (BWF)". I Googled to find BWF does not have the 4Gb (2Gb for some programs) limit the WAV's have. Maybe that's it then. BWFs have the same size limits as .wav files: Please see http://en.wikipedia.org/wiki/Broadcast_Wave_Format That's funny, cos thats the page I looked at and for some reason I thought I'd read that it didn't have the same limits. How embarrasing, must pay more attention! The short answer is: The 2 GB limit on .wav files comes from a 32 bit counter in the .wav file header. When the .wav file format was invented, people were still sizing hard drives in megabytes... BTW, the 32 bit counter can potentially handle 4 GB .wav files but not all software supports this feature. I have an old copy of Wavelab and that bugs out at 2GB. There is also a Sony wave files format called wav64 that replaces the 32 bit counter with a 64 bit counter, which faciliates considerably larger files. People have been circumventing the 2/4 GB size limit for years, maybe more than a decade. The general technique is to break data up into 2 GB segments and then come up with some way to logically string them together. Usually, a control file of some kind is used to do this. BTW, I'm so happy with my first edition Microtrak that I've never felt the need to upgrade. When I'm making really long recordings, I just use 192 kB MP3s. Cheers. When I was looking round at digital recorders, I did notice in the specs that some absolutely would not record more than 2GB at a time, despite taking larger cards. The Zoom H2 being one of them. Just thought I'd make sure with this one. Gareth. |
#8
Posted to rec.audio.pro
|
|||
|
|||
M Audio digital recorder for long recordings?
Gareth Magennis wrote:
Unfortunately its continuously segue'd music and it needs to be set and left til it finishes, and will be net streamed as such. Time for a new producer! I guess I had this requirement confused with the one where someone wanted to record a day's worth of lectures. But really, hours and hours and hours of music with not a single break? Don't the musicians have to pee now and then? -- If you e-mail me and it bounces, use your secret decoder ring and reach me he double-m-eleven-double-zero at yahoo -- I'm really Mike Rivers ) |
#9
Posted to rec.audio.pro
|
|||
|
|||
M Audio digital recorder for long recordings?
"Mike Rivers" wrote in message news Gareth Magennis wrote: Unfortunately its continuously segue'd music and it needs to be set and left til it finishes, and will be net streamed as such. Time for a new producer! I guess I had this requirement confused with the one where someone wanted to record a day's worth of lectures. But really, hours and hours and hours of music with not a single break? Don't the musicians have to pee now and then? It's a DJ on a club night, Mike. One DJ, one 8 hour unbroken session. Doesn't seem to have many pees though. Gareth. |
#10
Posted to rec.audio.pro
|
|||
|
|||
M Audio digital recorder for long recordings?
On Oct 20, 6:55*pm, "Gareth Magennis"
wrote: "Mike Rivers" wrote in message news Gareth Magennis wrote: Unfortunately its continuously segue'd music and it needs to be set and left til it finishes, and will be net streamed as such. Time for a new producer! *I guess I had this requirement confused with the one where someone wanted to record a day's worth of lectures. But really, hours and hours and hours of music with not a single break? Don't the musicians have to pee now and then? It's a DJ on a club night, Mike. One DJ, one 8 hour unbroken session. Doesn't seem to have many pees though. Gareth. why can't you use 192KB MP3,,, and don't tell me the quality is not good enough. Mark |
#11
Posted to rec.audio.pro
|
|||
|
|||
M Audio digital recorder for long recordings?
"Mark" wrote in message ... On Oct 20, 6:55 pm, "Gareth Magennis" wrote: "Mike Rivers" wrote in message news Gareth Magennis wrote: Unfortunately its continuously segue'd music and it needs to be set and left til it finishes, and will be net streamed as such. Time for a new producer! I guess I had this requirement confused with the one where someone wanted to record a day's worth of lectures. But really, hours and hours and hours of music with not a single break? Don't the musicians have to pee now and then? It's a DJ on a club night, Mike. One DJ, one 8 hour unbroken session. Doesn't seem to have many pees though. Gareth. why can't you use 192KB MP3,,, and don't tell me the quality is not good enough. Mark Probably just the word "lossy", and it's not totally my call. It's for the website guys. So far it's been recorded on a laptop as a WAV, put on a Linux server and broadcast as mp3. The WAV may or may not be used later, and is there for archiving anyway. If I have a box than can do both 192 mp3 and WAV, I would choose the WAV. The M Audio IS that box. I like it when storage is so cheap you don't need to compress at all. Gareth. |
Reply |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Sony Video8 Digital Audio recordings | Pro Audio | |||
CD Recorder in Standby/Record...How long is too long | Pro Audio | |||
Which file format to use for very long audio recordings | Tech | |||
Any Recorder for very long recordings | Pro Audio | |||
digital audio recorder | Pro Audio |