Screenshot of AutoParser panel. The AutoParser will scan through a digital recording file to recognize and write call sequences to your computer and save them with a filename header, notes, attributes, and date and time stamp. Click for full scale image.

The AutoParser lets you record files from an autotriggering time expansion detector (e.g. Pettersson D240x) using any digital recorder* such as the Samson Zoom H2 and then parse the bat pass events into individual files stamped with the date and time of the pass.

The AutoParser scans through a digital recording to extract sections that have a signal amplitude above a designated threshold and save them as separate files.

Simply set the date and start time of the digitally recorded file, add notes, settings, and a filename start, and then the AutoParser will name the files by appending the the date and time of recordings to a text header entered in the "filename start" text box. In the absence of any "filename start" text, the filename will be just the date and time. The time format is HHMM,SS.

For example, if autoparsing calls at Bat Spring on 4 July, 2008, you might enter "Bat Spring" in the "filename start" text box. The files will then appear named as

1. Bat Spring-04Jul08-1900,00.wav
2. Bat Spring-04Jul08-1901,12.wav
3. Bat Spring-04Jul08-1901,49.wav

...and so on.

You can then analyze the files using SonoBat or other signal processing software. This facilitates monitoring efforts, particularly when you would like to simultaneously monitor multiple sites, or carry on the monitoring while you tend to other tasks.

*Well, any recorder with sufficiently high sampling rate, e.g., 160 kbps for mp3, 32 or 44.1 kHz (CD quality) for wav format. Most digital voice recorders only record up to 11 kHz (sampling rate) and will only resolve time expanded ultrasound bat data up to 55 kHz (sound frequency).