Registratore Acustico Subacqueo Programmabile

A simple instrument, for underwater acoustic monitoring, with quality and low price.
Suitable to monitor the acoustic environment from nets to conservation hot-spots, Marine Protected Areas, off-shore operations, RASPs offer a simple instrument than can be deployed and recovered from a RIB (see our sample deployment video).

Acoustic bottom recorder. Deployment and recovery. Electrolytic acoustic release.

Initially based on commercial recorders (from M-Audio MicroTrack II to current Yamaha, Zoom solid state recorders, offering up to 48kHz in bandwidth at 24 bits). A custom control circuit was designed and integrated to offer full programmability of the units according to the desired recording schedule. RASPs can record acoustic signals following a time schedule, only limited by available memory and battery capacity.


RASP 12 C24
Sistema di registrazione audio digitale, con idrofono a larga banda, in un contenitore stagno. Permette la registrazione subacquea di audio, in alta qualità, per filmati, per il monitoraggio acustico subacqueo di aree di studio, per studi preliminari sul rumore subacqueo.
Leggi a proposito del RASP 12 C24
Leggi a proposito del RASP 12B
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MT 150US
Based on M-Audio MicroTrack II with a custom made programmable timer, currently supports up to 64GByte compact flash cards.
The battery pack has a 12.000mA nominal capacity and is made of NiMH fast rechargeable cells with an ultra-low-dropout voltage regulator.
Uses a Sensor Technology SQ26 hydrophone (other hydrophones can be selected). It is fit into an aluminium canister, 9cm diameter and 30cm tall.

MT 200
Same as the MT 150US model, the MT 200 has a 26.000mA battery pack, in longer canister (50cm).


RASP tech sheets (older docs)
Sample recordings:
M-Audio Microtrack 24/96 set at min gain, max quality:

40kHz sweep @ 500mV peak-to-peak

40kHz sweep @ 100mV RMS