The Experts below are selected from a list of 4200 Experts worldwide ranked by ideXlab platform
Vences Miguel - One of the best experts on this subject based on the ideXlab platform.
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FIGURE 5 in The use of bioacoustics in anuran taxonomy: theory, terminology, methods and recommendations for best practice
2017Co-Authors: Köhler Jörn, Jansen Martin, Rodríguez Ariel, Kok, Philippe J. R., Toledo, Luís Felipe, Emmrich Mike, Glaw Frank, Haddad, Célio F. B., Rödel Mark-oliver, Vences MiguelAbstract:FIGURE 5. Spectrograms and oscillograms of anuran advertisement calls conforming to the general sound categories proposed by Beeman (1998) for animals (and slightly modified herein). All graphics produced with the R package Seewave (Sueur et al. 2008a), from recordings of AmphibiawebEcuador.org (Hypsiboas tetete: Hylidae), Dendrobates.org (Andinobates fulguritus: Dendrobatidae), Vences et al. (2006) (Rhombophryne coronata: Microhylidae), Du Preez & Carruthers (2009) (Ptychadena anchietae: Ptychadenidae; Tomopterna marmorata and Amietia angolensis: Pyxicephalidae), Cocroft et al. (2001) (Ceratophrys cornuta: Ceratophryidae), Elliot et al. (2009) (Dryophytes andersonii: Hylidae). All spectrograms at Hanning Window function, 512 bands resolution
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FIGURE 4 in The use of bioacoustics in anuran taxonomy: theory, terminology, methods and recommendations for best practice
2017Co-Authors: Köhler Jörn, Jansen Martin, Rodríguez Ariel, Kok, Philippe J. R., Toledo, Luís Felipe, Emmrich Mike, Glaw Frank, Haddad, Célio F. B., Rödel Mark-oliver, Vences MiguelAbstract:FIGURE 4. Comparative spectrograms of a call of Dryophytes andersonii, all drawn with Hanning Window function, showing the effect of different FFT resolution on the graphic representation of calls. Each spectrogram shows the identical 300 ms section of a recording. Note that with higher FFT settings, the spectral detail of the call representation increases. At lower FFT settings, the temporal pattern of the call is more clearly recognizable. Call recording taken from Elliot et al. (2009). Graphics produced with the R package Seewave (Sueur et al. 2008a)
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FIGURE 18 in The use of bioacoustics in anuran taxonomy: theory, terminology, methods and recommendations for best practice
2017Co-Authors: Köhler Jörn, Jansen Martin, Rodríguez Ariel, Kok, Philippe J. R., Toledo, Luís Felipe, Emmrich Mike, Glaw Frank, Haddad, Célio F. B., Rödel Mark-oliver, Vences MiguelAbstract:FIGURE 18. Interpretation of advertisement call differences: (A) Spectrograms and oscillograms of calls of two allopatric frog species without any significant differences (evidence for species-level divergence by molecular genetics and tadpole morphology; Vences et al. 2010a). (B) Moderate structural call differences of two allopatric populations currently assigned to the same species. The calls of Blommersia wittei from Sambava and Andrakata are composed of clicking notes of a metallic sound, whereas at Nosy Be, Benavony, and Montagne d'Ambre, notes contain pulses and calls exhibit less distinct inter-note intervals. Spectrograms produced with CoolEdit Pro at Hanning Window function, 256 bands resolution
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FIGURE 6 in A new species of bright-eyed treefrog (Mantellidae) from Madagascar, with comments on call evolution and patterns of syntopy in the Boophis ankaratra complex
2015Co-Authors: Hutter, Carl R., Lambert, Shea M., Cobb, Kerry A., Andriampenomanana, Zo Faniry, Vences MiguelAbstract:FIGURE 6. Comparative oscillograms (top) and corresponding spectrograms (bottom) of single notes of the advertisement calls on the same time scale in the Boophis ankaratra complex. Species shown are: (A) B. boppa (Maharira); (B) B. miadana (Andohahela); (C) B. ankaratra (Maharira); (D) B. schuboeae (Ambatolahy); and (E) B. haingana (Andohahela). Spectrogram was produced in SEEWAVE using a Hanning Window length of 512
Rajiv Saxena - One of the best experts on this subject based on the ideXlab platform.
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on the modified bartlett Hanning Window family
IEEE Transactions on Signal Processing, 1996Co-Authors: Jai Krishna Gautam, Arun Kumar, Rajiv SaxenaAbstract:Window functions have played a vital role in digital signal processing and found extensive applications in signal analysis and estimation. The definition of the modified Bartlett-Hanning (MBH) Window is extended to the form:/spl omega/(t,/spl alpha/)=/spl alpha/-(4/spl alpha/-2)|t|+(1-/spl alpha/)cos2/spl pi/t;|t|/spl les/0.5, 0.5/spl les//spl alpha/<1.88 and its spectral behavior is investigated. It is found that with the parameter, /spl alpha/, adjusted to different values, this Window family can attain a minimum mainlobe width of 1.08, a maximum sidelobe level of -36.89 dB and a maximum first sidelobe level of -53.59 dB. The extended MBH Window family is also analyzed for other useful parameters. The property of steerable dip in the sidelobe structures is also demonstrated.
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On the modified Bartlett-Hanning Window (family)
IEEE Transactions on Signal Processing, 1996Co-Authors: Jai Krishna Gautam, Arun Kumar, Rajiv SaxenaAbstract:Window functions have played a vital role in digital signal processing and found extensive applications in signal analysis and estimation. The definition of the modified Bartlett-Hanning (MBH) Window is extended to the form:/spl omega/(t,/spl alpha/)=/spl alpha/-(4/spl alpha/-2)|t|+(1-/spl alpha/)cos2/spl pi/t;|t|/spl les/0.5, 0.5/spl les//spl alpha/
Jai Krishna Gautam - One of the best experts on this subject based on the ideXlab platform.
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on the modified bartlett Hanning Window family
IEEE Transactions on Signal Processing, 1996Co-Authors: Jai Krishna Gautam, Arun Kumar, Rajiv SaxenaAbstract:Window functions have played a vital role in digital signal processing and found extensive applications in signal analysis and estimation. The definition of the modified Bartlett-Hanning (MBH) Window is extended to the form:/spl omega/(t,/spl alpha/)=/spl alpha/-(4/spl alpha/-2)|t|+(1-/spl alpha/)cos2/spl pi/t;|t|/spl les/0.5, 0.5/spl les//spl alpha/<1.88 and its spectral behavior is investigated. It is found that with the parameter, /spl alpha/, adjusted to different values, this Window family can attain a minimum mainlobe width of 1.08, a maximum sidelobe level of -36.89 dB and a maximum first sidelobe level of -53.59 dB. The extended MBH Window family is also analyzed for other useful parameters. The property of steerable dip in the sidelobe structures is also demonstrated.
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On the modified Bartlett-Hanning Window (family)
IEEE Transactions on Signal Processing, 1996Co-Authors: Jai Krishna Gautam, Arun Kumar, Rajiv SaxenaAbstract:Window functions have played a vital role in digital signal processing and found extensive applications in signal analysis and estimation. The definition of the modified Bartlett-Hanning (MBH) Window is extended to the form:/spl omega/(t,/spl alpha/)=/spl alpha/-(4/spl alpha/-2)|t|+(1-/spl alpha/)cos2/spl pi/t;|t|/spl les/0.5, 0.5/spl les//spl alpha/
Köhler Jörn - One of the best experts on this subject based on the ideXlab platform.
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FIGURE 4 in The use of bioacoustics in anuran taxonomy: theory, terminology, methods and recommendations for best practice
2017Co-Authors: Köhler Jörn, Jansen Martin, Rodríguez Ariel, Kok, Philippe J. R., Toledo, Luís Felipe, Emmrich Mike, Glaw Frank, Haddad, Célio F. B., Rödel Mark-oliver, Vences MiguelAbstract:FIGURE 4. Comparative spectrograms of a call of Dryophytes andersonii, all drawn with Hanning Window function, showing the effect of different FFT resolution on the graphic representation of calls. Each spectrogram shows the identical 300 ms section of a recording. Note that with higher FFT settings, the spectral detail of the call representation increases. At lower FFT settings, the temporal pattern of the call is more clearly recognizable. Call recording taken from Elliot et al. (2009). Graphics produced with the R package Seewave (Sueur et al. 2008a)
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FIGURE 5 in The use of bioacoustics in anuran taxonomy: theory, terminology, methods and recommendations for best practice
2017Co-Authors: Köhler Jörn, Jansen Martin, Rodríguez Ariel, Kok, Philippe J. R., Toledo, Luís Felipe, Emmrich Mike, Glaw Frank, Haddad, Célio F. B., Rödel Mark-oliver, Vences MiguelAbstract:FIGURE 5. Spectrograms and oscillograms of anuran advertisement calls conforming to the general sound categories proposed by Beeman (1998) for animals (and slightly modified herein). All graphics produced with the R package Seewave (Sueur et al. 2008a), from recordings of AmphibiawebEcuador.org (Hypsiboas tetete: Hylidae), Dendrobates.org (Andinobates fulguritus: Dendrobatidae), Vences et al. (2006) (Rhombophryne coronata: Microhylidae), Du Preez & Carruthers (2009) (Ptychadena anchietae: Ptychadenidae; Tomopterna marmorata and Amietia angolensis: Pyxicephalidae), Cocroft et al. (2001) (Ceratophrys cornuta: Ceratophryidae), Elliot et al. (2009) (Dryophytes andersonii: Hylidae). All spectrograms at Hanning Window function, 512 bands resolution
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FIGURE 18 in The use of bioacoustics in anuran taxonomy: theory, terminology, methods and recommendations for best practice
2017Co-Authors: Köhler Jörn, Jansen Martin, Rodríguez Ariel, Kok, Philippe J. R., Toledo, Luís Felipe, Emmrich Mike, Glaw Frank, Haddad, Célio F. B., Rödel Mark-oliver, Vences MiguelAbstract:FIGURE 18. Interpretation of advertisement call differences: (A) Spectrograms and oscillograms of calls of two allopatric frog species without any significant differences (evidence for species-level divergence by molecular genetics and tadpole morphology; Vences et al. 2010a). (B) Moderate structural call differences of two allopatric populations currently assigned to the same species. The calls of Blommersia wittei from Sambava and Andrakata are composed of clicking notes of a metallic sound, whereas at Nosy Be, Benavony, and Montagne d'Ambre, notes contain pulses and calls exhibit less distinct inter-note intervals. Spectrograms produced with CoolEdit Pro at Hanning Window function, 256 bands resolution
Andrew G. Jeffs - One of the best experts on this subject based on the ideXlab platform.
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Vocalisation Repertoire of Female Bluefin Gurnard (Chelidonichthys kumu) in Captivity: Sound Structure, Context and Vocal Activity - Fig 1
2016Co-Authors: Craig A. Radford, Shahriman M. Ghazali, John C. Montgomery, Andrew G. JeffsAbstract:Oscillograms (whole sound and enlarged section), spectrogram and power spectrum (750 point FFT; Hanning Window; 64 Hz filter bandwidth) for representative examples of; a) Gru1 sound, b) Gru2 sound.
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Vocalisation Repertoire of Female Bluefin Gurnard (Chelidonichthys kumu) in Captivity: Sound Structure, Context and Vocal Activity - Fig 2
2016Co-Authors: Craig A. Radford, Shahriman M. Ghazali, John C. Montgomery, Andrew G. JeffsAbstract:Oscillograms (whole sound and enlarged section), spectrogram and power spectrum (750 point FFT; Hanning Window; 64 Hz filter bandwidth) for representative examples of; a) Short-growl sound and, b) Long-growl sound. Amplitude and power are shown as relative units.
