naturerecordists
[Top] [All Lists]

Re: Going digital.

Subject: Re: Going digital.
From: Walter Knapp <>
Date: Sun, 09 Mar 2003 22:10:06 -0500
Martyn Stewart wrote:
> I use Flash card recorders, minidisk & DAT.
> My DAT recorders are a Tascam DA-P1 and a Sony PCM-M1, Both are great to
> take out into the field and I have had no end of success with these,
> however, I did have some trouble once with the DA-P1 In the humidity of
> Australia and it played up a wee bit, but listing to others it's a
> common occurrence with DAT recorders.

I had considerable experience with rotating drum video recorders, which 
is why I never went with DAT.

> My Minidisk recorders are a HHB-500 Portadisk and various pocket size
> Sony's. I like the format and as Walt says, they are handy in as much as
> you slip another disk in when the first is full, Battery power is good
> on all recorders but sometimes I will get trouble with the HHB-500 and
> have to change batteries on a regular basis, especially if you are
> running Phantom power.

Even running Phantom power, I'd be changing disks far more often than 
batteries. I use 2000mah AA NIMH for the Portadisc. I rarely have to go 
to my 2nd battery caddy in a session, or even a whole evening. But, I 
often have the recorder charging from the car's inverter system while 
moving to new areas if I've put in lots of use. I have enough high speed 
chargers to charge batteries faster than the portadisc could use them 
along on my forays. Mostly those charge headlamp batteries, my bigger 
battery user. Though that's improved since I retrofitted my duo's with 
the new LED low beam system.

> I like the flash recorders (PC Cards) I have a Marantz PMD-690 and I
> love this machine, transferring data is a sneeze, whatever you record on
> this is transferred instantly for editing on your computer and if you
> use Cool Edit" like me, this is the way to go, at first the flash cards
> were an expensive media unlike MDisk but now with cards of over 128mb
> from Costco its fairly cheep, You can also by portable drives that will
> hold as much as 30Gigs that you can transfer all the data without a
> laptop that will run on 2 AA batteries. If it's MD you want to go then I
> would choose the Portadisk above the Marantz for most of the reasons
> Walt has said but it does have a 20-second recording buffer for extra
> confidence while recording on the move.

The 20 second buffer is different from the prerecord. I went and checked 
the specs on the PMD-650 minidisc. It does list a prerecord of up to 2 
seconds. That's what would be compared the the Portadisc's 6 second 
prerecord. The Portadisc uses part of it's record buffer for the 
prerecord. It also is buffering during record. Looks like your solid 
state has a prerecord buffer too.

Recording on the move is virtually not done with the higher output mic 
systems. At least by me. Any way you move will mess the recording up. 
Even shifting your weight or breathing hard. I have bumped the portadisc 
around during recording accidentally, and it's not had any skipping. I 
have also moved around while recording, walking to a new location etc., 
which of course ruins that section of recording, no problems from the 
portadisc. So, I'm not sure how important a buffer really is to nature 
recording. The portadisc's system will preserve the unwritten TOC info 
even through a accidental battery removal.

It should probably be pointed out that 128mb uncompressed stereo at 
16bit 44k is only something like 12 minutes. Is that about what you get 
per 128mb card recording to wav file, or do you use compressed audio?

While we are at it, how's the preamp noise, is the phantom power clean, 
what's the limiter, attenuation choices, low cut etc. like?

> The Maycom recorders are great tools too and the latest handheld model
> is showing you that the format will be as good and practical as the MD.
> Take a look at this page on the Web for various choices of recorders.
> http://www.bradleybroadcast.com/2001/digital_audio_recording.htm

The handheld appears to be compressed audio only. For those looking for 
uncompressed recorders.

Walt




________________________________________________________________________
________________________________________________________________________

<Prev in Thread] Current Thread [Next in Thread>
Admin

The University of NSW School of Computer and Engineering takes no responsibility for the contents of this archive. It is purely a compilation of material sent by many people to the naturerecordists mailing list. It has not been checked for accuracy nor its content verified in any way. If you wish to get material removed from the archive or have other queries about the archive e-mail Andrew Taylor at this address: andrewt@cse.unsw.EDU.AU