Airborne vs. radio-transmitted vocalizations in two primates: a technical report
| Autor: | James S. Cochran, Patrice Adret, Mauricio Suarez Roda |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Ecology Computer science Microphone Acoustics Speech recognition Throat microphone 05 social sciences Transmitter Accelerometer 010603 evolutionary biology 01 natural sciences Signal Structure and function Transducer 0501 psychology and cognitive sciences 050102 behavioral science & comparative psychology Joint (audio engineering) Ecology Evolution Behavior and Systematics |
| Zdroj: | Bioacoustics. 27:273-294 |
| ISSN: | 2165-0586 0952-4622 |
| Popis: | Elucidating the structure and function of joint vocal displays (e.g. duet, chorus) recorded with a conventional microphone has proved difficult in some animals owing to the complex acoustic properties of the combined signal, a problem reminiscent of multi-speaker conversations in humans. Towards this goal, we set out to simultaneously compare air-transmitted (AT) with radio-transmitted (RT) vocalizations in one pair of humans and one pair of captive Bolivian grey titi monkeys (Plecturocebus donacophilus) all equipped with an accelerometer – or vibration transducer – closely apposed to the larynx. First, we observed no crosstalk between the two radio transmitters when subjects produced vocalizations at the same time close to each other. Second, compared with AT acoustic recordings, sound segmentation and pitch tracking of the RT signal was more accurate, particularly in a noisy and reverberating environment. Third, RT signals were less noisy than AT signals and displayed more stable amplitude regar... |
| Databáze: | OpenAIRE |
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