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Keywords: Amplitude modulation
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Journal Articles
Journal Articles
J Exp Biol (2015) 218 (18): 2881–2891.
Published: 1 September 2015
... fish size. Sounds differed among species in terms of waveform shape and their rate of amplitude modulation. In addition, multiple distinguishable sound types were observed from each species: three sound types from A. cataphractus and P. hancockii , and two sound types from A. pectinifrons . Although...
Includes: Supplementary data
Journal Articles
J Exp Biol (2014) 217 (13): 2377–2389.
Published: 1 July 2014
... repertoire composed of three basic sound types that varied widely in duration, harmonic structure and degree of amplitude modulation (AM): ‘hum’, ‘grunt’ and ‘growl’. Hum duration varied nearly 1000-fold, lasting for minutes at a time, with stable harmonic stacks and little envelope modulation throughout...
Journal Articles
J Exp Biol (2004) 207 (20): 3523–3529.
Published: 15 September 2004
... recognition in both species was tested during phonotaxis on a walking compensator. Female N. robustus were attracted to calls without amplitude modulation. Amplitude-modulated signals were equally attractive, as long as the silent intervals were short enough. The maximally tolerated interval duration varied...
Journal Articles
J Exp Biol (2003) 206 (11): 1833–1843.
Published: 1 June 2003
... but much less so in non-songbirds, the songs of which are often regarded as relatively simple. We examined mechanisms of frequency and amplitude modulation of phonation in ring doves Streptopelia risoria ,which are non-songbirds. Spontaneous coo vocalizations were recorded together with concurrent pressure...
Journal Articles