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“Male frogs call to attract females for mating and to defend territories from rival males. Female frogs of some species prefer lower-pitched calls, which indicate larger, more experienced males. Acoustic interference occurs when background noise reduces the active distance or the distance over which an acoustic signal can be detected. Birds are known to call at a higher pitch or frequency in urban noise, decreasing acoustic interference from low-frequency noise. Using Bayesian linear regression, we investigated the effect of traffic noise on the pitch of advertisement calls in two species of frogs, the southern brown tree frog (Litoria ewingii) and the common eastern froglet (Crinia signifera). We found evidence that L. ewingii calls at a higher pitch in traffic noise, with an average increase in dominant frequency of 4.1 Hz/dB of traffic noise, and a total effect size of 123 Hz. (more…)
On March 27 2013 the Sound Studies class conducted a soundwalk across the UT campus. The point of departure was our classroom at the School of Music. The point of arrival was the Plaza of the Radio-Television-Film Department, where we would meet Prof. Andrew Garrison (who would guide us inside the RTF building and talk about film sound).
Each student received a small notebook to write what they were hearing as we walked. I was particularly interested in hearing focusing and the amount of detail included in the hearing — writing process. You can see the results of this experiment below.
Inside the School of Music
News, commentary, reviews and discussion of Foucault and his works
A human history on BBC Radio 4
Exploring The Photographic Aesthetic
ObservaSP // Pelo direito à cidade na política urbana de São Paulo