Hi, I used extensively the first series of SongMeter and only occasionally
the current version, which has longer recording capabilities on 4 SD cards.
They work very well, you can accurately program them according to the
daylight cycle, you can also set different sampling rates at each recording
period. They are rugged enough to be left in any weather conditions,
however it could be safer to mount the unit on a wood plate with a "roof",
well spaced from mics, but able to avoid direct rain on mics.
The only disadvantage compared with a good recording setup is the self
noise that appears higher. So expect to have a white noise floor in your
recordings.
Gianni
2012/4/3 badgreenbird <>
> **
>
>
>
> Hi all
>
> I'm planning some bird surveys using a recording device & microphones
> (will listen & interpret the recordings at a later time). This device was
> recommended to me:
> http://www.wildlifeacoustics.com/products/acoustic-monitoring
>
> Does anyone have experience with it? Some of the specs are listed below:
>
> The plan is to set up a recorder and return the next day to retrive the
> data, then move the unit to another spot & repeat.
>
> I have minimal technical knowledge on this gear - is it just as well (or
> better?) to get one of the Sony or Olympus models with built-in mics?
>
> thanks for any advice
>
> Mark Phinney
>
> Audio Specifications
> =95 ChannelsChannels:2
> =95 Interface: 3-pin waterproof connector (ground, signal,
> 3.3V supply)
> =95 Bias power: 2.5V 2.2K ohm, switch enabled per channel
> =95 High-pass filter: 2-pole butterworth,switch selectable per
> channel at 2, 180 or 1,000Hz
> =95 Pre-amplifier: 2-stage, switch selectable per channel, at +0,
> +12, +24, +36, +48, or +60dB gain. For
> sample rates <=3D 96kHz, third-stage
> digitally-configurable +0-+12dB in 1.5dB
> steps
> =95 Noise: -115dBV equivalent input noise (-105dBV
> for 192kHz and 384kHz sample rates)
> =95 ADC: 1V rms full-scale 16-bit, 90dB SNR
> =95 Sample rates: 4, 8, 16, 22.05, 24, 32, 44.1, 48kHz and
> 96kHz standard; 192kHz and 384kHz
> available with SM2BAT+ daughter card.
> =95 Digital format: 16-bit .WAV PCM (optional .WAC
> proprietary lossless or lossy compression
> formats) or zero crossing.
> =95 Headphones: 3.5mm stereo jack
> =95 Filtering and triggering: Configurable digital high-pass and
> low-pass filters at sample rate divided by 3,
> 4, 6, 8, 12, 16, 24, 32, 48 and 96. Adaptable
> trigger with configurable threshold above
> background 1-88dB, absolute trigger with
> configurable threshold -1 - -88dB full scale,
> inactivity time for trigger off 0.1 - 9.9
> seconds.
>
> SMX-II Microphones
> =95 Enclosure: weatherproof
> =95 Sensitivity: -36=B14dB (0dB=
> =95 Frequency response: flat 20Hz - 20,000Hz
> =95 Signal-to-Noise Ratio: > 62dB
> =95 Directionality: Omnidirectional
>
>
>
--
Centro Interdisciplinare di Bioacustica e Ricerche Ambientali
Universit=E0 degli Studi di Pavia
Via Taramelli 24, 27100 Pavia
http://www.unipv.it/cibra
http://mammiferimarini.unipv.it
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