منابع مشابه
Waveform and packet structure of lion roars
The Equator-S magnetometer is very sensitive and has a sampling rate of normally 128 Hz. The high sampling rate allows for the ®rst time ̄uxgate magnetometer measurements of ELF waves between the ion cyclotron and the lower hybrid frequencies in the equatorial dayside magnetosheath. The so-called lion roars, typically seen by the Equator-S magnetometer at the bottom of the magnetic troughs of m...
متن کاملAn acoustic analysis of lion roars. II: Vocal tract characteristics
This paper makes the first attempt to perform an acoustic-to-articulatory inversion of a lion (Panthera leo) roar. The main problems that one encounters in attempting this, is the fact that little is known about the dimensions of the vocal tract, other than a general range of vocal tract lengths. Precious little is also known about the articulation strategies that are adopted by the lion while ...
متن کاملLion, ungulate, and visitor reactions to playbacks of lion roars at Zoo Atlanta.
Felids in captivity are often inactive and elusive in zoos, leading to a frustrating visitor experience. Eight roars were recorded from an adult male lion and played back over speakers as auditory enrichment to benefit the lions while simultaneously enhancing the zoo visitor experience. In addition, ungulates in an adjacent exhibit were observed to ensure that the novel location and increased f...
متن کاملDo acoustic features of lion, Panthera leo, roars reflect sex and male condition?
Long distance calls function to regulate intergroup spacing, attract mating partners, and/or repel competitors. Therefore, they may not only provide information about the sex (if both sexes are calling) but also about the condition of the caller. This paper provides a description of the acoustic features of roars recorded from 18 male and 6 female lions (Panthera leo) living in the Serengeti Na...
متن کاملAn acoustic analysis of lion roars. I: Data collection and spectrogram and waveform analyses
This paper describes the collection of lion roar data at two different locations, an outdoor setting at Antelope Park in Zimbabwe and an indoor setting at Parken Zoo in Sweden. Preliminary analyses of spectrographic and waveform data are provided.
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ژورنال
عنوان ژورنال: Annales Geophysicae
سال: 2000
ISSN: 0992-7689
DOI: 10.1007/s005850050898