Bat Detector Information Pack
Contents
1. Time Expansion Frequency Division Heterodyne and Full Spectrum Sampling Model Approx Frequency Microphone Freq Batteries Size Design features other cost Expansion range mm factors Factor Batbox Griffin 1500 8 10 16 FD Electret unknown AA unknown Built in recording Date time 1550 16 TE temp amp light reading levels Programmable menu driven function set up Can record continuously up to a max file length of one hour for full spectrum real time sampling Pettersson 4350 From 1 Capacitance 10 200kHz Internal 170x80x35 Built in recording 16 bit D1000x original 1 batteries or recording system using compact built to speed to 30 external flashcard as storage Manual or order power level triggering modes supply Comments recording mode TE 6 10V factor of 1 for real time full spectrum sampling to 30 can be selected Full Spectrum Real time Bat Recorders long term unattended monitoring Model Approx cost Microphone Freq range Batteries Size mm Design features other factors Batcorder Email Electret 1 16 150kHz 4x AA unknown Analyses microphone signal in real info ecoobs com time amp discriminates between bat for quote calls amp other sound signals Autonomous long term monitoring Independent recording device amp software built to co operate with the hardware Song Meter 995 SMX US Up to 4xD unknown Designed for lo2. at around 275 for a single user licence and more for multiple licences BatSound has a nice big window for sonograms and an easy to use toolbar with shortcut buttons that operate on a mouse click for common functions It also has lot of additional functions and newer versions have improved settings The help files are generally well structured and easy to use Newer versions also allow you to import mp3 files directly into BatSound and to manage recordings from the D500x You can download an evaluation version of the latest software for free from the Pettersson website Q TF32 is a free programme designed for speech analysis A user manual is available from http www medsch wisc edu milenkvc tools html and a sound analysis instruction booklet from BCT QO Wavesurfer is another completely free program available from http www speech kth se wavesurfer This was developed for speech analysis and you need to establish your own spectrogram parameters and save them Therefore you need to know a little about the terminology FFTs etc or you can look at the ibats website for instructions written by Dr Jon Russ http www ibats org uk page aspx tabid 256 Q Cool Edit Pro 2 1 produced by Syntrillium has been taken over and is now sold as Adobe Audition However the old version is available as a free download from http www softpedia com progDownload Cool Edit Pro Download 2076 html 18 20MB for a 21 day free trial in which you can
3. Batteries Size mm Speaker Design features other cost type amp no range factors Magenta 40 unknown unknown 16kHz 1x9V 145x80x34 Y Requires soldering amp MkII Kit 8kHz PP3 electronics skills amp the ability to understand circuit diagrams Semafor 46 unknown 10 140kHz unknown 1x9V 145x60x45 Y UF 140 PP3 Semafor 55 unknown 10 220kHz unknown 1x9V 145x60x45 Y UF 220 PP3 Ciel CDB 60 Electret 1 18 120kHz 10kHz 1x9V 140x64x31 Y Integrated LED torch 105 R2 5kHz PP3 BATZ model also Mono available same spec aimed at children Magenta 62 Electret 1 15 130kHz 9kHz 4x AAA 145x80x34 Y LED torch Large Bat4 4kHz frequency dial with top illumination Side controls for single handed operation Wrist strap Ciel CDB 90 Electret 2 15 130kHz 10kHz 1x9V 170x75x40 Y LED display Wrist strap 103 R3 5kHz PP3 Stereo Magenta 95 Electret 1 10 130kHz 9kHz 4x AAA 135x72x27 Y LCD display with Bat5 4kHz backlighting Inbuilt LED torch Side controls for single handed operation Wrist strap Ciel CDB 120 Electret 2 15 130kHz 10kHz 1x9V 170x75x40 N LCD display External 101 R3 5kHz PP3 speaker can be added Stereo Wrist strap Ciel CDP 150 Electret 2 15 130kHz 13kHz External 125x75x40 N Boxed for mounting and 102 R3 external 6 5kHz 9 12V long term surveys Professional DC Stereo dual option can Stereo Source observe 2 frequencies at same time LCD display Mini 3 15
4. analyse 10ms calls The spectrogram and oscillogram cannot be viewed simultaneously There are also a number of programs that have been developed in the USA and or are designed to work with Apple Macs although most of these have not been tested O Sonobat v 2 5 5 is a program developed in the USA It includes an auto trigger recording function developed especially for the D240x set up to trigger automatically and allowing remote recording to a digital recorder It allows you to look at reference calls in the same window next to a call that you are trying to identify Reference calls are automatically adjusted to match the time and frequency scale of the one you are looking at Analysis functions are plentiful including definition of low high frequencies bandwidth duration heel slope characteristic frequencies harmonics and automatic calculation of the inter pulse interval The program costs US 320 There is a free downloadable demo of v2 4 for Mac and PC http www sonobat com Q beAnalyze 1 0 is a programme designed to work with real time recordings of bat calls To be used with recordings from the Batcorder system http www ecoobs com cnt bcAnalyze html A call finding algorithm quickly finds calls within the recording A license costs 140 VAT and runs for 30 days in trial mode System requirement is a Mac running Mac OS X 10 5 Q The Bioacoustics Research Programme at Cornell Laboratory of Ornithology developed a well
5. respected sound program called Canary some time ago It is free to download but unfortunately only runs on Mackintosh http www birds cornell edu brp software canary information The user manual includes background information about how spectrograms are created and analysed If you are willing to delve into some physics it can help you to use other sound analysis programs more effectively Relevant sections available from http www birds cornell edu brp software are Appendix A Digital Representation of Sound and Appendix B A Biologists Introduction to Spectrum Analysis Q The new sound analysis software from Cornell University called Raven is available from http www birds cornell edu brp raven Raven html There are two options Raven v 1 4 and Raven Lite which is free The full version is able to display any number of sound files simultaneously with each file in its own window It has other features that allow you to easily measure compare and edit parts of different sequences and sounds The Raven Lite version has the ability to view only a single spectrogram at one time Both versions are available for Mac OSX or PC The full version is US 400 100 year for students September 2011 The Bat Conservation Trust Quadrant House 250 Kennington Lane London SE11 5RD Tel 0845 1300 228 Fax 020 7627 2628 Email enquiries bats org uk www bats org uk
6. 230 Bandwidth PP3 Comment switch 8kHz Wrist strap 4kHz U30 630 10 20 40 unknown 15 200kHz Y 2x AA 147x65x40 Miniature ultra low noise microphone Dodoultra unknown 10 unknown 10 125kHz unknown 2x AA 147x89x25 Het frequency shift In f s mode is a broadband detector amp displays peak F s output can be recorded through headphone socket LCD Display NB this detector uses frequency shift instead of frequency division frequencies by ten with less loss of information Time Expansion Detectors Summary in price order The signal is digitally processed to reduce the Model Approx Expansion Microphone Freq Batteries Size mm Design features other cost Factor range factors TIME EXPANSION ONLY Tranquility 470 N A Capacitive 10 160kHz 4x AA 145x95x45 Hands free worn around Transect neck No speaker TIME EXPANSION AND HETERODYNE Tranquility III 755 10 32 64 Capacitive 12 160kHz 4x AA amp 155x95x52 LED display Internal digital internal recorder 10 24sec memory battery Pettersson 1160 10 Advanced 10 120kHz 1x9V 119x60x25 LCD Display Comment D240x Electret 1 8kHz PP3 switch Storage time 3 4 1 7 4kHz or 0 1sec Automatic or manual trigger ECO Mega 1555 10 32 64 Capacitor 12 160kHz 4xAA 170x110x40 25 6sec memory Voice commentary Time tag 30min intervals Back to back recording
7. 5 Electret 1 15 160kHz 8kHz 2x AA 147x65x40 Y Large illuminated tuning 4kHz dial Batbox TID 156 Electret 1 19 125kHz 16kHz 1x9V 125x69x32 Y Digital LCD display with 165 8kHz PP3 backlight Side controls Wrist strap Model Approx Microphone Frequency Bandwidth Batteries Size mm Speaker Design features other cost type amp no range factors Ciel BM1 170 Electret 2 15 130kHz 10kHz 1x9V unknown N Clock temp amp humidity Professional 5kHz sensor Bat counter Can Stereo categorise frequency into 3 different ranges for counting different spp Wrist strap Batscanner 187 Electret 1 15 120kHz unknown 3x AAA 120x65x27 Y Adjusts automatically to detected frequency LED display SSF Bat2 215 MEMS 1 15 130kHz 10kHz 4x AA 185x65x28 Y In addition to heterodyne 5kHz function also uses frequency division to monitor all frequencies amp reports peak frequency Pettersson 220 Electret 1 10 120kHz 8kHz 1x9V 113x71x33 Y Backlit frequency D100 amp Piezo 1 4kHz PP3 control Pettersson 280 Electret 1 10 120kHz 8kHz 1x9V 119x60x25 Y Fully backlit LCD D200 4kHz PP3 display Side controls easy to adjust Broadband Bat Detectors Frequency Division Detectors Summary in price order Model Approx Division Microphone Freq Amplitude Batteries Size
8. Bat Conservation Trust Bat Detector Information Pack The Basics There are four types of bat detector 1 Heterodyne e Heterodyne detectors are tuneable you select the frequency range to listen to This makes them the best detectors for immediate identification of bats in the field e They work by filtering the inaudible bat sound with an ultrasonic signal from the detector and producing the audible difference between the two sounds e Sounds can be recorded onto a recorder but recordings cannot be used with sound analysis software to generate sonograms as frequency information is not retained e They are the cheapest of the detectors and are simple to use making them ideal for beginners 2 Frequency Division e Frequency division detectors detect all frequencies so there is no need to tune in to a specific frequency and you don t miss any bats e They work by outputting a single sound wave for every ten waves if divided by 10 in the original call thereby making the calls audible by reducing the frequencies by a factor of ten while still enabling you to hear the calls in real time e Sounds can be recorded and analysed with sound analysis software but some information is lost e They are generally low to mid price but cheaper versions tend not to retain amplitude information 3 Time Expansion e Like frequency division detectors time expansion detectors detect all frequencies e They work by digitally recording a short s
9. Design features cost Factor range retaining mm other factors FREQUENCY DIVISION ONLY Ciel CDB 60 10 Electret 1 18 120kHz N 1x9V 140x64x31 LED torch 205 Mono PP3 Batbox 80 10 Electret 1 20 120kHz Y 1x9V 165x46x34 Comes with BatScan Baton PP3 sound analysis software Very simple design amp easy single handed operation Anabat SD2 2 090 8 16 32 Capacitance 4 200kHz N A 4x AA 155x90x45 Designed for and PDA 1 internal unattended long term package or 12V monitoring external CF amp GPS compatible PDA with pre loaded software Does not retain amplitude so analysis based largely on call structure and frequency parameters FREQUENCY DIVISION AND HETERODYNE Ciel CDB 100 10 Electret 1 18 120kHz N 1x9V 140x65x40 Wrist strap 305 R2 Dual Bandwidth PP3 10kHz 5kHz Ciel CDB 200 10 Electret 2 15 120kHz Y 1x9V 170x75x35 Backlit LCD display 301 R3 Bandwidth PP3 Separate microphones Advanced 10kHz for each function 5kHz Commentary button enabling note taking Wrist strap Batbox 255 10 Electret 1 17 125kHz Y 1x9V 125x69x32 Large LED display amp Duet 280 Bandwidth PP3 control for single 16kHz handed operation Wrist 8kHz strap Model Approx Division Microphone Freq Amplitude Batteries Size Design features cost Factor range retaining mm other factors Pettersson 450 10 Electret 1 10 120kHz Y 1x9V 119x60x25 LCD Display D
10. Tel 01954 211 288 Batbox III D Baton Duet Griffin available to pre order Magenta Electronics Ltd www magenta2000 co uk 135 Hunter Street Burton on Trent Staffs DE14 2ST Tel 01283 565435 Email sales magenta2000 co uk Magenta MKII Kit Bat4 BatS NHBS http www nhbs com 2 3 Wills Road Totnes Devon TQ9 5XN Tel 01803 865913 Email customer services nhbs co uk A range of detectors including SSF Bat2 Pettersson Elektronik AB www batsound com Sweden based email for a UK quote info batsound com Full range of Pettersson detectors except D500x Semafor http www semafor co uk bat detector html Email enquiries semafor co uk for a catalogue Semafor UF 140 UF 220 Titley Electronics www titley com au Australia based can be shipped to UK Email info titley com au Anabat SD1 and SD2 Ultra Sound Advice http www ultrasoundadvice co uk 27 Merton Hall Road Wimbledon London SW19 3PR Tel 020 8287 4614 Email sales soundadvice co uk Mini3 Detector U30 Detector Sound Analysis Software A selection of software packages for analysing bat echolocation calls recorded using a broadband bat detector time expansion or frequency division are listed here with some of the more frequently used ones at the start We do not recommend specific packages but BCT training courses in sound analysis cover the following BatSound BatScan Wavesurfer and TF32 Q Adobe Audition v 3 0 i
11. lanaecology com Anabat SD1 Batbox III D Baton Duet Griffin Magenta MKII Kit Bat4 Bat5 Mini 3 Pettersson D100 D200 D230 D240x D500x D1000x Batbox Ltd www batbox com 2A Chanctonfold Horsham Road Steyning West Sussex BN44 3AA Tel 01903 816298 Email info batbox com Batbox II D Baton Duet Bat Ma nagement www batmanagement com US based email for a UK quote sales batmanagement com Pettersson D200 D500x only available here D1000x Bat Planet www batplanet co uk C o Yarwood Ltd Treefield Industrial Estate Gelderd Road Leeds LS27 7JU Email sales batplanet co uk Full range of Ciel detectors not including CDP 302 Belfry bat detector Bioquip www bioquip net Batbox III D and Duet Full range of Ciel detectors not including CDP 302 Cou rtpan http courtpan gnxt net 3 Suffolk Street Cheltenham GL50 2DH Tel 01242 570123 Email courtpan gxn co uk Tranquillity Transect Tranquility I ECO Mega Dodotronic www dodotronic com Via de Gasperi 5 00040 Castel Gandolfo RM Italy Email info dodotronic com Dodoultra EcoObs www ecoobs com Contact via online contact form http www ecoobs com cnt contact html Batcorder Elekon AG http www elekon ch en batlogger products Cheerstrasse 16 CH 6014 Lucerne Switzerland Tel 41 41 250 40 40 Email mail elekon ch Batlogger Batscanner Green witch www green witch com search for bat detectors
12. natch of sound e g 1 second then playing it back at a slower speed resulting in very high quality recordings and retention of the same information as the original call However recording is not continuous as calls are not detected during the playback period so snapshots of calls are sampled e Sounds can be recorded and used with sound analysis software They enable a very detailed analysis of the sound and a clearer sonogram when compared to frequency division e They are among the most expensive of the detectors 4 Full Spectrum Real time Sampling e Like frequency division and time expansion detectors full spectrum real time sampling detectors detect all frequencies e They sample at very high rates to capture all signal information and output it in real time so you get the detail of call structure as with time expansion but also the real time continuous monitoring as with frequency division e Sounds can be recorded and used with sound analysis software They enable a very detailed analysis of the sound and a clearer sonogram when compared to frequency division e They are generally more expensive than frequency division and time expansion detectors Additional note e Some detectors feature more than one type of sound conversion For example some frequency division detectors have a heterodyne mode as well and some feature three models of sound conversion There are a number of factors to consider when choosing a bat detect
13. ng term deployment SM2 190kHz Records frequencies up to 192kHz Ultrasonic Sufficient for monitoring nearly all 384 kHz spp present in Europe Second Digital Field channel can be used with Recorder conventional SMX II microphone to record other wildlife at scheduled times though not simultaneously with ultrasonic monitoring Song Meter 995 SMX US Up to 4xD unknown Designed for long term deployment SM2 190kHz Records frequencies up to 96kHz Ultrasonic Widely used in North America 192kHz Two channels double monitoring Digital Field potential amp can record Recorder simultaneously Batlogger 1535 Electret 1 10 150kHz 3 7V 155x80x38 Manual or automatic recording 4600mAh Integrated GPS Coordinates amp Li Ion temperature recorded with each 12VDC sound recording Free BatExplorer charger analysis software Pettersson 1795 Electret 1 N A 4x AA 184x172x52 Detects amp records ultrasound in D500x Sampling or real time Aimed for long term rates 44 1 external unattended recording of bat calls 4 300 and power slots for CompactFlash memory 500kHz supply cards with total capacity of 128GB optim for Triggering system allowing device 500kHz to start recording as sound is detected Manufacturers and Suppliers details correct at time of going to print Alana Ecology Ltd www alanaecology com The Old Primary School Church Street Bishop s Castle Shropshire SY9 5AE Tel 44 0 1588 630173 Email sales a
14. or These include e Price e Microphone and frequency range Microphones determine the sensitivity of the bat detector Piezo best at mid frequencies 45kHz MEMS mid frequencies 40 60kHz Electret lower frequencies lt 30kHz and Capacitance higher frequencies gt 80kHz You will still be able to detect other frequencies but the distance from which you can detect them will vary Detectors with more than one microphone are best because they will be sensitive at more than one frequency e g Pettersson D100 overleaf All European species are detectable within the range 20 120kHz Bandwidth How many kHz either side of your tuned frequency on which you can hear calls heterodyne A wider bandwidth reduces the chances of missing species you are not tuned into while a narrower bandwidth makes it easier to discern the difference between bats calling at similar frequencies Design size display LED LCD controls on side or top side controls easier for single handed operation The following is a guide to some of the detectors that are available on the market at the present time and their main features It is not intended as a review and prices should only be used as a guide as they may change over time or between suppliers BCT do not recommend any specific type or model of detector Heterodyne Bat Detectors Summary in price order Model Approx Microphone Frequency Bandwidth
15. s a substantial package that calculates all the start end peak frequencies of a pulse for you and allows you manipulation sounds It can also convert batches of mp3 or other formats to WAV format quickly You can also listen to heterodyne separate from the FD channel on Duet recordings Audition v 3 0 is available as a 30 day try out and the full package is 350 Web site http www adobe com uk products audition QO Avisoft at www avisoft com offers a free download of a minimal program called SAS Lab Lite 5 7 MB for very basic editing and generation of spectrograms The full Avisoft has a whole range of functions although it takes time to learn how to use them all O Bat Scan available from www batbox com comes with a selection of sample files so that you can compare your own recordings It costs 17 plus VAT and delivery and is a simplified version of Spectrogram In general it is faster and easier to use than BatSound but does not have all of the functions It is designed to be used with frequency division recordings Follow up service and advice is good It is also available from Alana Ecology www alanaecology com at 30 including VAT Q BatSound is the original software developed by Pettersson especially for use with ultrasonic bat calls and is generally considered to be the industry standard It is available directly from Pettersson http www batsound com p 34 and also from Alana Ecology www alanaecology com Costs start
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