The adapted Avisoft-SASLab Pro sound analysis software and the LOG file output support quick navigation through the captured sound files. Sound-activated recording can be restricted to user-defined periods of time (and optionally putting the computer to sleep in order to save power). The created event files are time-stamped (at sample clock resolution) enabling subsequent re-assembling into larger continuous files for precise temporal analysis. Additionally, a hold-time can be defined to prevent cutting up of related sound elements. In order to capture sounds preceding the trigger event, a pre-trigger duration can be specified. Once a trigger event has occurred, the assigned channel(s) will be written into numbered WAV-files onto the hard drive as long as the trigger event is active.
For more sophisticated signal filtering, the Avisoft-SASLab classification facility may be used.Īlternatively, trigger events can be keystrokes, joystick button hits or timer intervals. Additionally, an entropy parameter can be used to discriminate between noise and pure-tone signals. This mechanism prevents triggering caused by undesired disturbance signals outside the frequency range of the animal vocalizations. An trigger event can be the exceeding of a certain energy threshold within a pre-defined frequency interval. Each channel can be triggered separately by different trigger events. Optionally, Avisoft-RECORDER can record from up to 32 audio channels. Up to 8 channels, each sampling at up to 1 MHz can be monitored simultaneously. * The maximum sampling rate for real-time display and streaming to disk depends on the type of acquisition board and computer performance (USB, PCMCIA or PCI board, processor speed, graphics adapter, disk transfer rate, …) Screen shots
wav file metadata chunks) from Kestrel 4xxx Pocket Weather Tracker, Davis Instruments Vantage Pro2 / Vue / Envoy and Airmar LB150, PB150, PB200 series devices and many other common PC weather stations through a generic real-time log file interface option HID TEMPer, Weather Station Data Logger, Cumulus, Weather Display, Heavy Weather, KlimaLogg Pro). Real-time weather data logging (into dXML and bext. These embedded data records can afterwards be accessed from SASLab Pro and subsequently integrated into a metadata base. wav files).Ĭustomizable metadata input tool for embedding user-defined database records directly into the recorded. The created log files provide a quick overview on the recorded data, which can also be easily transferred via low-bandwidth internet connections (these log files are much smaller than the original. The dedicated Bat Call Trigger Filter tool can distinguish bat echolocation calls from other unwanted signals, such as insect noise.Īn automated call parameter measurememt tool can quantify various call parameters and classify the calls based on these parameters in real-time. wav files into metadata chunks and into separate.
USV monitoring option for counting and measuring rat or mice ultrasonic vocalizations.īatch mode for processing large numbers of animals in USV drug testing procedures.Īcquiring GPS location data from NMEA 0183 or Windows Location API compatible GPS receivers and logging the geographic locations of the recorded. Playback through both standard audio interfaces and National Instruments DAQ devices, optionally with playlist functionality. Real-time acoustic monitoring of ultrasound signals by using heterodyning, aliasing or envelope tracking techniques. High-pass filtering for attenuating low-frequency noise. frequency ) with temporal averaging and temporary peak hold. Multichannel real-time spectrum display (amplitude vs. Multichannel real-time spectrographic display (frequency vs. Individual triggering and saving of single channels from multichannel soundcards or data acquisition boards.
Pre-trigger recording of sporadic animal vocalizations in the field (either manually or automated using one of the various triggering options : threshold / manual / digital input / timer / time program. High-speed harddisk-recording with sampling rates up to 1 MHz* with various data acquisition boards ( Avisoft-UltraSoundGate, National Instruments and soundcards or audio interfaces (up to 192 kHz).
Long-term monitoring and recording of acoustic events both in the laboratory and in the field. Bat echolocation and communication calls.Ultrasonic vocalizations in laboratory rats and mice.Common audio recording (50 Hz … 20 kHz).Counting and measuring USV’s in real-time.Recording and analyzing rat or mouse USV’s.Automatically measuring sound parameters.