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A chirp is a signal in which the frequency increases (up-chirp) or decreases (down-chirp) with time. In some sources, the term chirp is used interchangeably with sweep signal . [ 1 ] It is commonly applied to sonar , radar , and laser systems, and to other applications, such as in spread-spectrum communications (see chirp spread spectrum ).
A cricket is a type of cockpit audio alert onboard commercial aircraft such as those of Airbus. [1] [2] Its sound is intentionally designed to be extremely difficult for pilots to ignore. The "chirp chirp" sound is named after the insect that it imitates.
Cardinal sightings have a multitude of meanings such as being a sign of hope, wisdom or blessings, or that they are angels with a divine message for you. According to Doolittle, Cardinals are a ...
Nightingale floors (鴬張り or 鶯張り, uguisubari) listen ⓘ are floors that make a squeaking sound when walked upon. These floors were used in the hallways of some temples and palaces, the most famous example being Nijō Castle, in Kyoto, Japan.
The burrow acts as a resonator, amplifying the sound. Most male crickets make a loud chirping sound by stridulation (scraping two specially textured body parts together). The stridulatory organ is located on the tegmen, or fore wing, which is leathery in texture. A large vein runs along the centre of each tegmen, with comb-like serrations on ...
Males are distinguished from females by the absence of an ovipositor. At the end of the abdomen there are simply two cerci. Unlike females, however, males are able to produce sounds or chirps. Thus, males can be identified through sound while females cannot. Diagram A shows the male cricket with its wings raised for the purpose of chirping.
Cardinal vowels are a set of reference vowels used by phoneticians in describing the sounds of languages. They are classified depending on the position of the tongue relative to the roof of the mouth, how far forward or back is the highest point of the tongue, and the position of the lips (rounded or unrounded).
It is generally agreed upon in birding and ornithology which sounds are songs and which are calls, and a good field guide will differentiate between the two. Wing feathers of a male club-winged manakin, with the modifications noted by P. L. Sclater in 1860 [4] and discussed by Charles Darwin in 1871. [5] The bird produces sound with its wings.