In forest clearings of the Malaysian rainforest, chirping and trilling Mecopoda species often live in sympatry. We investigated whether a phenomenon known as stochastic resonance (SR) improved the ability of individuals to detect a low-frequent signal component typical of chirps when members of the heterospecific trilling species were simultaneously active. This phenomenon may explain the fact ...

Contrary to the English /r/, which has been extensively analysed, there is very little information on the trilled consonants in Spanish. These sounds are in general di cult to produce for young Spanish children and occur later (than other consonant sounds) in normal development. This paper describes acoustic measurements made on the trill productions in Spanish children with varying degrees of...

Sexually reproducing organisms should mate with the highest quality individuals that they can. When female songbirds choose a mate, they are thought to use several aspects of male song that reflect his quality. Under resource-limited environmental conditions, male Lincoln's sparrows (Melospiza lincolnii) vary among one another in several aspects of song quality, including song length, song comp...

Divergence in mate recognition systems among closely related species is an important contributor to assortative mating and reproductive isolation. Here, we examine divergence in male song traits and female preference functions in three cricket species with songs consisting of long trills. The shape of female preference functions appears to be mostly conserved across species and follows the pred...

Trill exercises are traditionally used in the clinical practice of speech-language pathology as vocal warm-ups in the treatment of dysphonia (Behlau & Pontes, 1995; Sataloff, 1991). They are also used by voice coaches (Aydos & Hanayama, 2004; Scarpel & Pinho, 2001) in the training of professional voice users, such as singers, actors (including voice actors), teachers, and lawyers. Although ther...

Vocal performance refers to the proficiency with which a bird sings songs that are challenging to produce, and can be measured in simple trilled songs by their deviation from an upper bound regression of frequency bandwidth on trill rate. Here, we show that male swamp sparrows (Melospiza georgiana) increase the vocal performance of individual song types in aggressive contexts by increasing both...

This document specifies a reference framework for Operations, Administration, and Maintenance (OAM) in Transparent Interconnection of Lots of Links (TRILL) networks. The focus of the document is on the fault and performance management aspects of TRILL OAM. Status of This Memo This document is not an Internet Standards Track specification; it is published for informational purposes. This documen...

This document specifies a reference framework for Operations, Administration, and Maintenance (OAM) in Transparent Interconnection of Lots of Links (TRILL) networks. The focus of the document is on the fault and performance management aspects of TRILL OAM. Status of This Memo This document is not an Internet Standards Track specification; it is published for informational purposes. This documen...