From Wikipedia, the free encyclopedia
Wheezing sound
Squawks
, or short
wheezes
, are brief, "squeaky" sounds; they are also referred to as squeaks. Their waveforms show a
sinusoidal
pattern with a duration 10 to 100
ms
and a frequency between 200 and 800
Hz
.
Many birds have made sounds which are
onomatopoeically
described as "squawk". Squawks have been described in
bird fancier's disease
and other forms of
hypersensitivity pneumonitis
.
[1]
In humans, squawks are also heard in a variety of conditions in which
alveolitis
is present. In one study they were found in 10% of patients with
pneumonia
.
[2]
References
[
edit
]
- ^
Earis JE, Marsh K, Pearson, MG. The inspiratory “squawk” in extrinsic allergic alveolitis and other pulmonary fibroses. Thorax 1979;37:923?926.
- ^
Paciej R, Vyshedskiy A, Bana D, Murphy R, Squawks in pneumonia, Thorax 2004;59:177?179