Same file as above, now "zoomed in" to fill the screen. At the beginning of the sequence the pulses alternate in strength probably because the bat is turning it's head. Towards the end of the sequence the pulses significantly speed up, probably on approach to a tasty insect.
Baton Bat Detector
Simple and versatile bat detection
The Baton is a simple but versatile bat detector having a monitor speaker allowing reduction of frequencies between 20kHz to 120kHz. The division factor is 10, reducing the sounds of a 50kHz bat to 5kHz. The unit comes with a version of BatScan sound analysis software, developed especially for the Baton. In addition, if attached to the sound card of a laptop computer by a stereo lead from the ‘line out’ of the Baton, it will produce real-time sonograms, allowing detailed analysis of calls when used with BatScan software.
The Baton retains the original amplitude of the calls recorded, allowing 3D analysis of bat calls. (time, frequency and intensity). Calls can also be recorded on other devices such as MP3 or minidisc for later analysis. MP3 files will have to be converted to WAV files before BatScan will be able to load them. The Baton is also ideal for listening to orthoptera (grasshoppers and crickets) whose communication is in the upper part of, or above human hearing. One PP3 9V battery lasts for up to 30hrs (alkaline).
BCM's take on the Baton
The Baton is by far the least expensive bat detector on the market that gives a relatively accurate representation of a bat pass in real time. The next higher bat detector that provides real time sonogram displays costs approximately $1000. Unlike other bat detectors in this price range or less (heterodyne only), the Baton is surprisingly well made and has no rattling parts. Although the built in speaker is a bit low to demonstrate to a large group, it would still be fine for interpretative programs. The real advantage is being frequency division technology with the real time sonogram; there is absolutely nothing like this available at such a low cost. This really allows you to not only hear the bats go by but also "see" them, save them, and would be the perfect introduction to the acoustic world of bats without investing in a $1000 unit.
Please note: while this frequency division (with amplitude) detector's output is best viewed using the included BatScan software, and some people have had mixed results viewing files in the SonoBat software, this device is not intended for precise species identification. They can be used for passage rates at mine entrances, etc. and applications where exact species ID is not important. However, you will easily be able to sort bat passes into their acoustic guilds, and with practice and knowledge of your local bat area you may be able to sort to species.
For species ID we recommend the Pettersson D500x, Pettersson D240x, or the SM2.
Baton Bat Detector Specifications
- Type: Frequency division with amplitude
- Frequency range: 15 - 120 kHz
- Real-time sonograms
- No tuning required
- Analysis Software included (with sample bat calls)
- Battery: 1 x IEC 6LF22 (9V)
- Weight: 81 g. including battery
- Outputs: 1 x 3.5 mm jacks for headphones and computer microphone line in
- Built in speaker
- Single handed operation
BatScan Analysis Software
- Fast and easy analysis of bat sonar
- BatScan processes PCM format digital audio data such as .wav sound files. Default settings have been optimized for use with the Baton.
- BatScan will operate with 8-bit color. However, a 24-bit color is required in order to save screen images as graphics files ( jpeg or bitmap ).
- BatScan will run under Windows 95, Windows 98, Windows ME, Windows NT 4.0, Windows 2000, Windows Vista or Windows XP. BCM and Myotisoft has used BatScan in Windows on a Mac running Parallels.
- BatScan runs best with 128MB or more of RAM memory.
Baton Bat Detector: $159.00 USD
Includes BatScan for Windows
Protective carry pouch
Shipping charge will be calculated during checkout.