Navigation Links
Birdsong not just for the birds
Date:7/28/2008

avi's warbler and the chaffinch. He listened carefully to the various types of birdsong, scrutinised them in a spectrogram and transferred the characteristics to algorithms. As soon as specific parameters are met, the programme kicks in. 'For example, the signal of the Savi's warbler has a mean frequency of 4 kHz, which is very typical. If, in addition, individual elements of the signal are repeated at a frequency of 50 Hz, this is detected as the call of a Savi's warbler,' Daniel explains. The chaffinch detector also analyses periodic repetitions of elements like these. In doing so it reveals more of a typical verse structure than the pitch of the chaffinch's song.

The Savi's warbler detector, particularly, which was subjected to long-term monitoring at Brandenburg's Parsteiner Weiher, is characterised by what researchers call 'robust recognition', i.e. a high degree of reliability. Despite interference from rain, wind and amphibians the programme recognised, with a 92% detection accuracy, the song of a species of bird which is still found on the shores of the Baltic but which has become rare elsewhere in Europe.

The birdsong detectors are as yet only calibrated for the birdsong of individual species. However, in the near future, Daniel Wulff thinks, it will be possible to link them up to a kind of superdetector which can recognise as many species as possible and, in combination with GPS coordinates, will make the mapping of bird populations simpler and more efficient.

The research field of bio-acoustics, he adds, is currently experiencing a boom. Although it was in the 1970s that the first attempts were made 'to detect the chaffinch with much slower computers,' Daniel says, with a nostalgic smile, 'what is decisive is that it's only now that we are in a position to store a large amount of recorded sound and place compact technology in nature which can really run for months, e.g. with solar energy.'


'/>"/>

Contact: Daniel Wolff
wolffd@iai.uni-bonn.de
49-022-873-4474
University of Bonn
Source:Eurekalert

Page: 1 2

Related biology news :

1. Do birds have a good sense of smell?
2. How birds spot the cuckoo in the nest
3. Birds migrate together at night in dispersed flocks, new study indicates
4. Want to fly? Dont copy the birds and the bees
5. Killer whales, blind bats, discriminating dolphins, mating birds
6. Migrating songbirds learn survival tips on the fly
7. Birds migrate earlier, but some may be left behind as the climate warms rapidly
8. Bee species outnumber mammals and birds combined
9. Genetic sequencing of protein from T. rex bone confirms dinosaurs link to birds
10. Asian waterbirds stage remarkable comeback
11. Some migratory birds cant find success in urban areas, study finds
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/11/2014)... Research and Markets , ... announced the addition of the "Biometrics Market in ... One major trend emerging in this market ... it is important to upgrade biometric solutions to the ...
(Date:12/11/2014)... ST. PAUL, Minn. , Dec. 10, 2014 ... wireless physiologic monitoring, has released a new series ... needs of preclinical toxicology researchers. M series, part ... help toxicologists collect the best possible physiologic data ...
(Date:12/10/2014)...  Wake Forest Baptist Medical Center today announced plans for a ... for this $50 million capital project is part of a ... The medical education building will be located ... adjacent to 525@vine in Wake Forest Innovation Quarter. Construction will ...
Breaking Biology News(10 mins):Biometrics Market in the APAC Region 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2New telemetry implants expected to change how large animal toxicology studies are conducted 2Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 2Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 3Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 4
... -- Reseachers at The Ohio State University have ... an effective method for preserving the important genetic diversity ... geranium, are some of the most popular flowers the ... Society listed more than 3,000 varieties of geranium in ...
... -- Two common dietary molecules found in legumes ... effects of radiation, researchers from the University of ... both human skin cells and a skin cancer-prone ... the damaging radiation found in sunlight, the team ...
... scientists today announced the results of a systematic effort ... worlds leading cause of cancer deaths. Appearing in the ... the research provides a comprehensive view of the abnormal ... 50 genomic regions that are frequently gained or lost ...
Cached Biology News:'TRAP' preserves genetic properties of popular geranium 2Antioxidants could provide all-purpose radiation protection 2Antioxidants could provide all-purpose radiation protection 3Genome study charts genetic landscape of lung cancer 2Genome study charts genetic landscape of lung cancer 3
(Date:1/22/2015)... 22, 2015 Selexis SA, a serial ... Cell Banks (RCBs) used for drug discovery to commercial ... will include Next-Generation Sequencing (NGS) data packages. ... biologic manufacturing by ensuring the integrity of the gene, ...
(Date:1/22/2015)... Nueva Jersey , 22 de enero de 2015  El ... abre hoy su llamada a nominaciones para 2015. Este ... ha hecho, o tiene el potencial para hacer, contribuciones ... nominaciones se aceptarán hasta el 15 de marzo de ...
(Date:1/22/2015)... Jan. 22. 2015  Varian Medical Systems (NYSE: VAR ... honored for its commitment to sustainability with inclusion on a ... the highest ranked healthcare equipment company among the Corporate Knights ... World Economic Forum at Davos, Switzerland . ...
(Date:1/22/2015)... 22, 2015  Derma Sciences, Inc. (Nasdaq: ... advanced wound care, announces that AMNIOEXCEL® and AMNIOMATRIX®, ... added to the Premier, Inc. Regenerative Skin Grafting ... the AMNIOEXCEL® and AMNIOMATRIX® product lines, which continue ...
Breaking Biology Technology:Selexis Generated Research Cell Banks Now Fully Sequenced Using Next-Generation Sequencing 2El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 2El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 3El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 4Varian Honored Among World's 100 Most Sustainable Corporations 2Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 2Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 3Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 4Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 5
... development places National Stem Cell in the sector for Anti-aging, ... and one of the ... Today, MOUNTAINSIDE, N.J., Oct. 25 National Stem,Cell Holding, ... is currently in final stage negotiations to exclusively license one ...
... Mass., Oct. 25 Millennium,Pharmaceuticals, Inc. (Nasdaq: ... a,conference call at 8:00 a.m. ET on Thursday, ... third-quarter 2007 financial and,operational results and upcoming activities. ... available on the webcast. Prior to the,conference call ...
... Glycominds Ltd., a,bio-diagnostics company specializing in glycan ... and cancer, announced today,entering into a research agreement ... cancer center to develop a new diagnostics blood ... to work with FCCC on this project," stated ...
Cached Biology Technology:National Stem Cell Holding in Final Stage Negotiations for Exclusive Licensing of its Recently Discovered Biomaterial for Anti-Aging Applications 2Millennium to Webcast Third-Quarter 2007 Financial and Operational Results 2Glycominds and Fox Chase Cancer Center Announce a Collaboration to Discover New Cancer Detection Diagnostic Tests 2
Anti-HumanLactoferrin...
Rabbit monoclonal [EP881Y] to EEF2K ( Abpromise for all tested applications). Antigen: Synthetic peptide corresponding to residues in the C-terminal of human EEF2K. Entrez GeneID: 29904 S...
ICAD Purified Anti-Mouse clone Polyclonal, Isotype Rabbit Ig, 200 µl Consult technical datasheet for details....
Rabbit polyclonal to M13 Bacteriophage Coat Proteins ( Abpromise for all tested applications)....
Biology Products: