sound (redirected from Frequency (sound))

sound (sound)

1. a pressure wave propagating through an elastic medium; waves with a frequency of 20–20,000 Hz cause the sensation of hearing.

2. the effect produced on the organ of hearing by vibrations of the air or other medium.

3. a noise, normal or abnormal, heard within the body.

4. an instrument to be introduced into a cavity to detect a foreign body or to dilate a stricture.

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adventitious sounds  abnormal auscultatory sounds heard over the lung, such as rales, rhonchi, or abnormal resonance.

aortic second sound  the audible vibrations related to the closure of the aortic valve; symbol A2.

auscultatory sounds  those heard on auscultation, such as breath sounds, heart sounds, and adventitious sounds.

breath sounds  respiratory s's; sounds heard on auscultation over the respiratory tract; bronchial and ventricular ones are heard normally at certain places, whereas a cavernous one indicates a lung cavity.

continuous sounds  adventitious sounds lasting longer than 0.2 sec, such as wheezes and rhonchi.

discontinuous sounds  adventitious sounds lasting less than 0.2 sec and coming in a series; the most common are rales.

ejection sounds  high-pitched clicking sounds heard just after the first heart sound, at maximal opening of the semilunar valves; seen in patients with valvular abnormalities or dilatations of aortic or pulmonary arteries.

friction sound  see under rub.

heart sounds  sounds heard over the cardiac region, produced by the functioning of the heart. The first, at the beginning of ventricular systole, is dull, firm, and prolonged, and heard as a “lubb” sound; the second, produced mainly by closure of the semilunar valves, is shorter and sharper than the first and is heard as a “dupp” sound; the third is usually audible only in youth; and the fourth is normally inaudible.

hippocratic sounds  succussion s's.

Korotkoff sounds  sounds heard during auscultatory determination of blood pressure.

percussion sound  any sound obtained by percussion.

pulmonic second sound  the audible vibrations related to the closure of the pulmonary valve; symbol P2.

respiratory sounds  breath s's.

succussion sounds  splashing sounds heard on succussion over a distended stomach or in hydropneumothorax.

to-and-fro sound  see under murmur.

urethral sound  a long, slender instrument for exploring and dilating the urethra.

valvular ejection sound  an ejection sound resulting from abnormality of one or both semilunar valves.

vascular ejection sound  an ejection sound resulting from abnormality of the pulmonary artery or aorta without abnormality of either semilunar valve.

voice sounds  auscultatory sounds heard over the lungs or airways when the patient speaks; increased resonance indicates consolidation or effusion.

white sound  that produced by a mixture of all frequencies of mechanical vibration perceptible as sound.

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sound ¹ (sound)

n.

1. Vibrations transmitted through an elastic material or a solid, liquid, or gas, with frequencies in the range of 20 to 20,000 hertz, capable of being detected by human organs of hearing.

2. Transmitted vibrations of any frequency.

3. A distinctive noise.

v.

To auscultate.

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sound ² (sound)

adj.

1. Free from defect, decay, or damage; in good condition.

2. Free from disease or injury.

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sound ³ (sound)

n.

An instrument used to examine or explore body cavities, as for foreign bodies or other abnormalities, or to dilate strictures in them.

v.

To probe a body cavity with a sound.

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sound

1. percept resulting from stimulation of the ear by mechanical radiant energy, the frequency depending on the species.

2. a slender instrument to be introduced into body passages or cavities, especially for the dilatation of strictures or detection of foreign bodies.

3. a noise, normal or abnormal, emanating from within the body.

4. strong, in good condition and without significant defects, e.g. said of wool which has sufficient tensile strength to resist the rigors of processing; said also of teeth as sound mouth.

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ejection s's

high-pitched clicking sounds heard very shortly after the first heart sound, attributed to sudden distention of a dilated pulmonary artery or aorta or to forceful opening of the pulmonic or aortic cusps.

friction sound

one produced by rubbing of two surfaces.

heart s's

the sounds produced by the functioning of the heart. See heart sounds.

Korotkoff's s's

those heard during auscultatory blood pressure determination.

percussion sound

any sound obtained by percussion.

respiratory sound

any sound heard on ausculation over the respiratory tract.

succussion s's

splashing sounds heard on succussion over a distended stomach or in hydropneumothorax.

to-and-fro sound

a peculiar friction sound or murmur heard in pericarditis and pleurisy.

urethral sound

a long, slender instrument for exploring and dilating the urethra.

sound waves

sound, the stimulus for hearing, consists of patterns of pressure waves generated in and passed through the air.

white sound

that produced by a mixture of all frequencies of mechanical vibration perceptible as sound.

sound wool

wool with no breaks in it that will stand up to the pressures of scouring, spinning and weaving.

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sound noun Physics Electromechanical energy sensed by the auditory apparatus. See Bowel sound, Dive bomber sound, First heart sound, Fourth heart sound, Korotkov sound, Second heart sound, Third heart sound Surgery A simple device used to assess the length of a nonpregnant uterus before performing an endometrial Bx. See Probe.