During the spring of 2013 and 2014, while investigating Orthopteran sounds in the inaudible range... more During the spring of 2013 and 2014, while investigating Orthopteran sounds in the inaudible range by a novel, low-cost ultrasonic USB microphone (Ultramic 250 by Dodotronic), songs by the common nightingale Luscinia megarhynchos were recorded. Spectral analyses displayed song components reaching up to the 60 kHz range. Songs with a well-defined fundamental frequency displayed up to 15 or more harmonics, the highest of which reached well above 45 kHz. Even though originally conceived for the study of Chiropteran ecolocation calls, self-contained, low-cost USB ultrasonic microphones proved useful in avian bioacoustics investigations.
During August 2013, a low-cost ultrasonic USB microphone (Ultramic 250 by Dodotronic), was fiel... more During August 2013, a low-cost ultrasonic USB microphone (Ultramic 250 by Dodotronic), was field-tested for its first application ever in Cicadomorphan bioacoustics studies. Two different species were recorded in the ultrasonic domain, with 250 kHz sampling frequency, one of them also with 96kHz audio recordings for comparison purposes. Ultramic 250 proved suitable for field use, while the recording campaign provided the opportunity to confirm the presence in South-Western Sardinia of two species, Tibicina corsica corsica Boulard, 1983, endemic to Sardinia and Corsica, and the widespread Cicada orni Linnaeus, 1758. To the best knowledge of the author, those reported are the first field recordings of Cicadidae songs encompassing the ultrasonic domain up to 125 kHz and – in particular for C. orni – display sound emissions at frequencies above those previously reported in literature. Even though conceived for the study of Chiropterans, self-contained, low-cost USB ultrasonic microphones proved useful in insect bioacoustics investigations.
Chi ha dentro la morte non deve presumere troppo. Perché tracotanza [hybris], fiorendo, frutta un... more Chi ha dentro la morte non deve presumere troppo. Perché tracotanza [hybris], fiorendo, frutta una spiga di illusioni [ate] da cui mieterà un raccolto di lacrime [nemesis]. Eschilo, I Persiani, 472 a. C.
During August 2013, Ultramic 250 by Dodotronic was field-tested for application in Orthopteran ac... more During August 2013, Ultramic 250 by Dodotronic was field-tested for application in Orthopteran acoustic biodiversity studies. The songs of four species were recorded: Uromenus brevicollis insularis Chopard, 1924, Rhacocleis baccettii Galvagni, 1976, Svercus palmetorum palmetorum (Krauss, 1902 and Oecanthus dulcisonans Gorochov, 1993. The recording campaign proved the viability of Ultramic 250 for field use and provided the opportunity to assess the presence in South-Western Sardinia of two less documented species, Svercus palmetorum palmetorum and Oecanthus dulcisonans
During the spring of 2013 and 2014, while investigating Orthopteran sounds in the inaudible range... more During the spring of 2013 and 2014, while investigating Orthopteran sounds in the inaudible range by a novel, low-cost ultrasonic USB microphone (Ultramic 250 by Dodotronic), songs by the common nightingale Luscinia megarhynchos were recorded. Spectral analyses displayed song components reaching up to the 60 kHz range. Songs with a well-defined fundamental frequency displayed up to 15 or more harmonics, the highest of which reached well above 45 kHz. Even though originally conceived for the study of Chiropteran ecolocation calls, self-contained, low-cost USB ultrasonic microphones proved useful in avian bioacoustics investigations.
During August 2013, a low-cost ultrasonic USB microphone (Ultramic 250 by Dodotronic), was fiel... more During August 2013, a low-cost ultrasonic USB microphone (Ultramic 250 by Dodotronic), was field-tested for its first application ever in Cicadomorphan bioacoustics studies. Two different species were recorded in the ultrasonic domain, with 250 kHz sampling frequency, one of them also with 96kHz audio recordings for comparison purposes. Ultramic 250 proved suitable for field use, while the recording campaign provided the opportunity to confirm the presence in South-Western Sardinia of two species, Tibicina corsica corsica Boulard, 1983, endemic to Sardinia and Corsica, and the widespread Cicada orni Linnaeus, 1758. To the best knowledge of the author, those reported are the first field recordings of Cicadidae songs encompassing the ultrasonic domain up to 125 kHz and – in particular for C. orni – display sound emissions at frequencies above those previously reported in literature. Even though conceived for the study of Chiropterans, self-contained, low-cost USB ultrasonic microphones proved useful in insect bioacoustics investigations.
Chi ha dentro la morte non deve presumere troppo. Perché tracotanza [hybris], fiorendo, frutta un... more Chi ha dentro la morte non deve presumere troppo. Perché tracotanza [hybris], fiorendo, frutta una spiga di illusioni [ate] da cui mieterà un raccolto di lacrime [nemesis]. Eschilo, I Persiani, 472 a. C.
During August 2013, Ultramic 250 by Dodotronic was field-tested for application in Orthopteran ac... more During August 2013, Ultramic 250 by Dodotronic was field-tested for application in Orthopteran acoustic biodiversity studies. The songs of four species were recorded: Uromenus brevicollis insularis Chopard, 1924, Rhacocleis baccettii Galvagni, 1976, Svercus palmetorum palmetorum (Krauss, 1902 and Oecanthus dulcisonans Gorochov, 1993. The recording campaign proved the viability of Ultramic 250 for field use and provided the opportunity to assess the presence in South-Western Sardinia of two less documented species, Svercus palmetorum palmetorum and Oecanthus dulcisonans
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