Thanks, Flawn. The other thing I noticed is that the DM-620 lacks the
pre-record buffer. But since I'm planning to use the timer that is
not a problem. And since the purpose is merely identifying presence
of bird species, and not producing pro-quality sound recordings, the
s/n is not so critical either. One review I read said the audio
quality on this is not nearly as good as the LS-7, but gave no
specifics as to what that means. Maybe they had the "voice tailoring"
turned on!
I'd love to hear if anyone has used this in the field.
John
On Sep 17, 2014, at 9:38 AM, Flawn Williams
[naturerecordists] wrote:
> Earlier models in the Olympus DM series were =91voice recorders=92,
> which usually translated into highly filtered bass response,
> grittier sounding highs, and other features aimed at the
> transcription crowd.
>
> Looking at the manual for this model, that frequency response
> =91voice tailoring=92 is now an optional menu item, so you can turn it =
> off. You can also deactivate the 'voice-activated' recording start
> control and the automatic volume control. So that=92s all good.
>
> There are no signal-to-noise specs in the manual, so these preamps
> may not be as quiet in this model as in the LS series. But at $100
> it=92s probably worth an experiment.
>
> 16-bit 44.1k is not a bad spec for nature recording, 24 bit would
> be nice but is not crucial. WAV is definitely a good idea, and this
> has that (PCM).
>
> This model actually uses three built-in mikes, probably two
> cardioids at the sides and an omni mid. With the omni included they
> say bass response goes down to 20 Hz=85or there is a mode you can set =
> that uses just the side mikes with low end dropping at 70 Hz.
> Oddly, if you plug in an external mike the low end drops at 40 Hz.
>
> One nice touch: this model can now recharge NiMH AAA batteries when
> plugged in with its own charger or via USB from a computer.
>
> =97Flawn Williams
>
>> Olympus DM-620?
>> Posted by: naturalcontemplative
>> Date: Tue Sep 16, 2014 1:55 pm ((PDT))
>>
>> Has anyone here used the Olympus DM-620 recorder? On paper it
>> looks very similar to the discontinued LS-7, except it is only a
>> 16 bit recorder.
>>
>>
>> I would not use it with external microphones. I am looking for an
>> inexpensive recorder with timer (can't afford a SongMeter) for
>> recording presence of birds in the absence of humans. This looks
>> like it could do the job for just a little over US$100. Some
>> people spoke highly of the LS-7 so I wonder if this recorder is
>> also better than one might expect from an inexpensive recorder.
>>
>>
>> Many thanks.
>>
>
>
>
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> "While a picture is worth a thousand words, a
> sound is worth a thousand pictures." R. Murray Schafer via Bernie
> Krause.
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