Search results
Results from the WOW.Com Content Network
Sopilka most commonly refers to a fife made of a variety of materials (but traditionally out of elderberry or viburnum wood) and has six to ten finger holes. [2] The term is also used to describe a related set of folk instruments similar to recorder , incorporating a fipple and having a constricted end.
This call is often used while feeding and when a mallard drake is landing. It gives the other birds a heads up. The quack of a mallard drake requires voice and is replicated by humming into a special whistle-like call. In teals, the drakes make a call of short bursts of a high pitch whistle. The "teet! (pause) teet! (pause) teet!-teet!"
These devices are whistles that do not radiate sound, but are still aerodynamic whistles. The upper figure on the right shows the basic arrangement of one version of the device. The circle on the left is the fluid source (air or liquid). A jet is formed that either goes into the upper or lower channel. The black lines are the feedback paths.
Cuckoo clock, a so-called Jagdstück ("hunt piece"), Black Forest, c. 1900, Deutsches Uhrenmuseum, Inv. 2006-013. A cuckoo clock is a type of clock, not typically pendulum driven, that strikes the hours with a sound like a common cuckoo call and has an automated cuckoo bird that moves with each note.
Bird vocalization includes both bird calls and bird songs. In non-technical use, bird songs (often simply birdsong ) are the bird sounds that are melodious to the human ear. In ornithology and birding , songs (relatively complex vocalizations) are distinguished by function from calls (relatively simple vocalizations).
1907: Hudson purchases S Auld Whistles, continuing to manufacture their models especially the Round " pignose " type known as 'Glasgow type police call'. 1904: Hudson fills orders (along with De Courcy) for W Dowler & Sons who stops manufacturing whistles. During this period, Coney & Co. stops making whistles and Hudson makes their models.
They command a varied repertoire of explosive and fricative whistles, percussive clicking sounds, and harsh rasping, churring or tearing sounds. [6] Three species have a rasping alarm call (cubla, senegalensis and pringlii), while the remaining three (gambensis, angolensis and sabini) have a stuttering alarm call. Wing fripping and bill ...
A whistle is a quarter-wave generator, which means that a sound wave generated by a whistle is about four times the whistle length. If the speed of sound in the steam supplied to a whistle were 15936 inches per second, a pipe with a 15-inch effective length blowing its natural frequency would sound near middle C: 15936/(4 x