Electronics for Neuroscience

Audio logger AL2

Deuteron’s audio logger AL2 is made for recording sounds that animals hear, and sounds that animals make.  Although it does not record neural signals, it is a member of Deuteron’s family of loggers for neuroscience experiments in freely moving animals. It is operated with the same radio transceivers as the neural loggers. and is operated with the same software. It is not much bigger than the MicroSD memory card that it holds and weighs about 1 gram. It can record audible and ultrasonic sounds, and has a frequency response that extends to 80kHz. The sampling rate is switchable between 50kHz, 100kHz and 200kHz. It can record sounds from either its on-board microphone or an external microphone or vibration transducer.


Audio Logger AL2 Specifications

Sampling rates 50kHz, 100kHz or 200kHz
Upper frequency limit Customizable, can be switched between 3 settings
Lower frequency limit Customizable, can be switched between 2 settings
Resolution 16 bit
Amplification control Amplification ratio of 1,2,4 or 8
High frequency limit range Up to 80kHz
Mass 1g
Battery requirement Lithium polymer single cell
Recording time 3 hours for a 2 gram battery
Recorded data format Uncompressed raw data
Dimensions 19.5mm x 14.5mm

This logger is best for experiments where animal sounds, but not neural signals, need to be recorded. If you want to record both sounds and neural signals at the same time, it is much better to use a neural logger that also records sounds. This is possible with MouseLog-16C loggers and the SpikeLog-64 single board logger.