{"refrec":{"BRefID":229211,"RR":"<b>Dähne, M.; Verfuß, U.K.; Brandecker, A.; Siebert, U.; Benke, H.</b> (2013). Methodology and results of calibration of tonal click detectors for small odontocetes (C-PODs). <i>J. Acoust. Soc. Am. 134(3)</i>: 2514-2522. <a href=\"http://dx.doi.org/10.1121/1.4816578\" target=\"_blank\">http://dx.doi.org/10.1121/1.4816578</a>","BEntID":220932,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>J. Acoust. Soc. Am. 134(3)</i>: 2514-2522. <a href=\"http://dx.doi.org/10.1121/1.4816578\" target=\"_blank\">http://dx.doi.org/10.1121/1.4816578</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Dähne, M.; Verfuß, U.K.; Brandecker, A.; Siebert, U.; Benke, H.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Dähne, M. <i>et al.</i>","Englishabstract":"Static acoustic monitoring (SAM) is one major technology for observing small cetacean species. Automatic click loggers deployed for long time periods (>2 months) with a single hydrophone are a standard solution. Acoustic properties, like detection thresholds of these instruments, are essential for interpretation of results, but have nevertheless received little attention. A methodology for calibrating tonal click detectors in small tanks consisting of the determination of the horizontal directivity pattern and detection thresholds including a transfer function is presented. Two approaches were tested to determine detection thresholds by (a) determining the 50% detection threshold and (b) fitting a linear regression model to the recorded relative amplitudes. The tests were carried out on C-PODs (Cetacean PODs, tonal click detectors), the most commonly used instrument for SAM in Europe. Directivity and threshold were tested between 60 and 150?kHz. Directivity showed a maximum variation of 8.5?dB in the horizontal plane. Sensitivity is highest between 80 and 130?kHz and linear (±3?dB) in this frequency range for most of the instruments tested. C-PODs have a detection threshold (calculated with the linear model) of 114.5?±?1.2 (standard deviation) dB re 1?µPa peak–peak at 130?kHz.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Methodology and results of calibration of tonal click detectors for small odontocetes (C-PODs)","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-13 01:31:19.587969","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":" acoustic signal processing, calibration, hydrophones, regression analysis\t","OtherDescriptors":null,"Notes":null,"AnaPub":2013,"MonPub":null,"DateUpdate":"2018-02-13","DateCreate":"2013-09-26","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000330047000077","VABBcode":null,"OpenAcc":0,"DOI":"10.1121/1.4816578"},"refs":null,"anarec":{"AnaID":229211,"PubliDate":2013,"Pagination":"2514-2522","XtraPublOfAnaID":null,"ISBN":null,"Volume":"134","Issue":"3","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43301,"SerRR":"The Journal of the Acoustical Society of America. American Institute of Physics: New York.  ISSN 0001-4966; e-ISSN 1520-8524","StandardTitleSer":"The Journal of the Acoustical Society of America","ISSN":"0001-4966","AbbrevSer":"J. Acoust. Soc. 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