I've been interested in (relatively) inexpensive HD based
recorders for similar multi-station audio range monitoring
purposes (birds, downconverted bat audio) and so have
followed Nomad JB3 disussions on various net venues. My
impression (with no hands-on experience ... which Raimund can
perhaps correct) is that the JB3, at least in more recent firmware
versions which offer record level controls and the like, may have
a firmware limit of about two hours on unattended recording
duration (independent of the 2 gb wav file maximum).
As far as I know, the Neuros HD backpack system (20,30,40gb)
(http://www.neurosaudio.com/) is the only other MP3 oriented
HD recorder which is also capable of uncompressed *.wav
recording from line in (part of a recent firmware upgrade, so not
listed in their product pdf). It is more appealing in some respects
than the JB3 in that they apparently use an open firmware
system ( at least some of their code is available on the web
site), encourage programmers and developers, and are
responsive to user feedback . Perhaps this is worth a look. They
are close to implementing timed recording from the built-in FM
tuner. With user interest it would be only a moderate step to
implement timed recording from the line-in.
If you can accept MP3 only HD recording, there are several other
options (e.g., Archos).
Bill Rainey
--- In "Graham M Smith"
<> wrote:
> Raimund,
>
> Thanks again, the MP3 option sounds good. I had not realised
there was a
> limit to the size of a WAV file.
>
> Graham
>
> > -----Original Message-----
> > From:
> > Sent: 24 March 2004 20:01
> > To:
> > Subject: RE: [Nature Recordists] Alternatives to Minidiscs - or
bats
> > again
> >
> >
> > Graham,
> >
> > as Marty already explained, even a 20 GB disk has a huge
capacity. The
> > recording time of 2000 minutes (at 44.1 kHz, stereo) would
> > further increase if you
> > used only one channel and a sample rate of only 22 kHz.
Then you would get
> > 8000 minutes (133 hours). However, you should note that a
single
> > .WAV file can
> > hold only 2 GB of data.
> >
> > As discussed earlier, it would also be justified to use the
> > compressed .MP3
> > format for recording bat detector output signals. That would
> > further increase
> > the recording time. For instance, a moderate 5:1
compression (at 64kbps)
> > would provide 660 hours (4 weeks!).
> >
> > Raimund
> >
> >
> > > Raimund,
> > >
> > > Thanks, Have you any idea of how many hours of
uncompressed WAV
> > file, the
> > > 20gb and 40gb models will hold - I don't seem able to find
that
> > on the web
> > > site.
> > >
> > > Graham
> > >
> > > > -----Original Message-----
> > > > From:
> > > > Sent: 24 March 2004 16:18
> > > > To:
> > > > Subject: Re: [Nature Recordists] Alternatives to Minidiscs
- or bats
> > > > again
> > > >
> > > >
> > > > Graham,
> > > >
> > > > The 'NOMAD Jukebox 3' by Creative Labs Inc. has a line
in connector,
> > > > FireWire interface and also offers uncompressed .wav
file recording:
> > > >
> > > > http://www.nomadworld.com/products/Jukebox3
> > > >
> > > > Regards,
> > > > Raimund
> > > >
> > > >
> > > > > Some may remember the earlier thread on rcording
bats, where my
> > > > recording
> > > > > problems looked as if they would be solved by the new
Hi-MD
> > recorders,
> > > > > However, we need these (20 in all) in April/early May
and it seems
> > > that
> > > > > the
> > > > > release has been delayed until June.
> > > > >
> > > > > So rather annoyingingly, I am going to have to buy an
alternative.
> > > > >
> > > > > Is any one aware of which MP3 juke box type devices
have a line in,
> > > and
> > > > > will
> > > > > record as wve files, the output from the bat detectors.
> > > > >
> > > > > Just so I can have this an option as I look at the
alternatives.
> > > > >
> > > > > Many thanks,
> > > > >
> > > > > Graahm S
> > > > >
> > > > >
> > > > >
> > > > > "Microphones are not ears,
> > > > > Loudspeakers are not birds,
> > > > > A listening room is not nature."
> > > > > Klas Strandberg
> > > > > Yahoo! Groups Links
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > >
> > > > --
> > > > +++ NEU bei GMX und erstmalig in Deutschland:
T=DCV-gepr=FCfter
> > > > Virenschutz +++
> > > > 100% Virenerkennung nach Wildlist. Infos:
> > http://www.gmx.net/virenschutz
> > > >
> > > >
> > > >
> > > >
> > > > "Microphones are not ears,
> > > > Loudspeakers are not birds,
> > > > A listening room is not nature."
> > > > Klas Strandberg
> > > > Yahoo! Groups Links
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > __________ NOD32 1.691 (20040324) Information
__________
> > > >
> > > > This message was checked by NOD32 antivirus system.
> > > > http://www.nod32.com
> > > >
> > > >
> > >
> > >
> > >
> > > "Microphones are not ears,
> > > Loudspeakers are not birds,
> > > A listening room is not nature."
> > > Klas Strandberg
> > > Yahoo! Groups Links
> > >
> > >
> > >
> > >
> > >
> >
> > --
> > +++ NEU bei GMX und erstmalig in Deutschland:
T=DCV-gepr=FCfter
> > Virenschutz +++
> > 100% Virenerkennung nach Wildlist. Infos:
http://www.gmx.net/virenschutz
> >
> >
> >
> >
> > "Microphones are not ears,
> > Loudspeakers are not birds,
> > A listening room is not nature."
> > Klas Strandberg
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> > __________ NOD32 1.692 (20040324) Information
__________
> >
> > This message was checked by NOD32 antivirus system.
> > http://www.nod32.com
> >
> >
________________________________________________________________________
________________________________________________________________________
|