sound - meaning and definition. What is sound
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What (who) is sound - definition

VIBRATION THAT PROPAGATES AS AN ACOUSTIC WAVE
Radiation of sound; Sounds; Sound wave; Sound waves; Auditory Range; Auditory range; Airborne sound; Acoustic Radiation; Sound propagation; Acoustic energy; Characteristics of sound; Sonida; Duration of sound; Sound duration
  • oscillating]] usually at the same [[frequency]]. One of the forks is being hit with a rubberized mallet. Although only the first tuning fork has been hit, the second fork is visibly excited due to the oscillation caused by the periodic change in the pressure and density of the air by hitting the other fork, creating an [[acoustic resonance]] between the forks. However, if we place a piece of metal on a prong, we see that the effect dampens, and the excitations become less and less pronounced as resonance isn't achieved as effectively.</small>
  • Figure 2. Duration perception
  • date=19 August 2007}}</ref>
  • Figure 3. Loudness perception
  • Figure 1. Pitch perception
  • Sinusoidal waves]] of different frequencies. The bottom waves have higher frequencies than those above. The horizontal axis represents time.
  • Spherical compression (longitudinal) waves
  • A 'pressure over time' graph of a 20 ms recording of a clarinet tone demonstrates the two fundamental elements of sound: Pressure and Time.
  • A drum produces sound via a vibrating [[membrane]]
  • Figure 4. Timbre perception
  • Approximate frequency ranges corresponding to ultrasound, with rough guide of some applications

sound         
sound1
¦ noun
1. vibrations which travel through the air or another medium and are sensed by the ear.
a thing that can be heard.
the area within which something can be heard.
2. (also musical sound) sound produced by continuous and regular vibrations, as opposed to noise.
3. music, speech, and sound effects accompanying a film or broadcast.
radio broadcasting as distinct from television.
4. an idea or impression conveyed by words.
¦ verb
1. emit or cause to emit sound.
utter.
2. convey a specified impression when heard.
3. (sound off) express one's opinions loudly or forcefully.
4. test (the lungs or another body cavity) by noting the sound they produce.
Derivatives
soundless adjective
soundlessly adverb
soundlessness noun
Origin
ME soun, from Anglo-Norman Fr. soun (n.), suner (v.), from L. sonus.
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sound2
¦ adjective
1. in good condition.
financially secure.
Brit. informal excellent.
2. based on reason or judgement.
competent or reliable.
3. (of sleep) deep and unbroken.
4. severe: a sound thrashing.
¦ adverb soundly.
Derivatives
soundly adverb
soundness noun
Origin
ME: from OE gesund, of W. Gmc origin.
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sound3
¦ verb
1. ascertain (the depth of water in the sea, a lake, etc.) by means of a line or pole or using sound echoes.
find the depth of water in (a ship's hold).
2. Medicine examine (the bladder or other internal cavity) with a long surgical probe.
3. (sound someone out) question someone discreetly or cautiously.
4. (especially of a whale) dive steeply to a great depth.
¦ noun a long surgical probe, typically with a curved, blunt end.
Derivatives
sounder noun
Origin
ME: from OFr. sonder, based on L. sub- 'below' + unda 'wave'.
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sound4
¦ noun a narrow stretch of water forming an inlet or connecting two larger bodies of water.
Origin
ME: from ON sund 'swimming, strait'; related to swim.
sound         
1. audio. 2. <logic> An inference system A is sound with respect to another system B if A can only reach conclusions which are true in B. A type inference system is considered sound with respect to a semantics if the type inferred for an expression is the same as the type inferred for the meaning of that expression under the semantics. The dual to soundness is completeness. (1995-03-01)
Sound         
·superl Firm; strong; safe.
II. Sound ·adv Soundly.
III. Sound ·noun A Cuttlefish.
IV. Sound ·superl Undisturbed; deep; profound; as, sound sleep.
V. Sound ·superl heavy; laid on with force; as, a sound beating.
VI. Sound ·noun Noise without signification; empty noise; noise and nothing else.
VII. Sound ·vi To ascertain the depth of water with a sounding line or other device.
VIII. Sound ·noun The air bladder of a fish; as, cod sounds are an esteemed article of food.
IX. Sound ·vt To causse to make a noise; to play on; as, to sound a trumpet or a horn.
X. Sound ·superl Founded in law; legal; valid; not defective; as, a sound title to land.
XI. Sound ·vi To be conveyed in sound; to be spread or published; to convey intelligence by sound.
XII. Sound ·vt To Signify; to Import; to Denote.
XIII. Sound ·vt To cause to exit as a sound; as, to sound a note with the voice, or on an Instrument.
XIV. Sound ·superl Free from error; correct; right; honest; true; faithful; orthodox;
- said of persons; as, a sound lawyer; a sound thinker.
XV. Sound ·vt To measure the depth of; to Fathom; especially, to ascertain the depth of by means of a line and plummet.
XVI. Sound ·vi To make a noise; to utter a voice; to make an impulse of the air that shall strike the organs of hearing with a perceptible effect.
XVII. Sound ·superl Healthy; not diseased; not being in a morbid state;
- said of body or mind; as, a sound body; a sound constitution; a sound understanding.
XVIII. Sound ·superl Whole; unbroken; unharmed; free from flaw, defect, or decay; perfect of the kind; as, sound timber; sound fruit; a sound tooth; a sound ship.
XIX. Sound ·vt To order, direct, indicate, or proclain by a sound, or sounds; to give a signal for by a certain sound; as, to sound a retreat; to sound a parley.
XX. Sound ·vt To explore, as the bladder or urethra, with a sound; to examine with a sound; also, to examine by auscultation or percussion; as, to sound a patient.
XXI. Sound ·vt To celebrate or honor by sounds; to cause to be reported; to publish or proclaim; as, to sound the praises of fame of a great man or a great exploit.
XXII. Sound ·noun Any elongated instrument or probe, usually metallic, by which cavities of the body are sounded or explored, especially the bladder for stone, or the urethra for a stricture.
XXIII. Sound ·vt To examine the condition of (anything) by causing the same to emit sounds and noting their character; as, to sound a piece of timber; to sound a vase; to sound the lungs of a patient.
XXIV. Sound ·superl Founded in truth or right; supported by justice; not to be overthrown on refuted; not fallacious; as, sound argument or reasoning; a sound objection; sound doctrine; sound principles.
XXV. Sound ·noun The occasion of sound; the impulse or vibration which would occasion sound to a percipient if present with unimpaired; hence, the theory of vibrations in elastic media such cause sound; as, a treatise on sound.
XXVI. Sound ·vt Fig.: To ascertain, or try to ascertain, the thoughts, motives, and purposes of (a person); to Examine; to Try; to Test; to Probe.
XXVII. Sound ·vi To make or convey a certain impression, or to have a certain import, when heard; hence, to seem; to Appear; as, this reproof sounds harsh; the story sounds like an Invention.
XXVIII. Sound ·noun A narrow passage of water, or a strait between the mainland and an island; also, a strait connecting two seas, or connecting a sea or lake with the ocean; as, the Sound between the Baltic and the german Ocean; Long Island Sound.
XXIX. Sound ·noun The peceived object occasioned by the impulse or vibration of a material substance affecting the ear; a sensation or perception of the mind received through the ear, and produced by the impulse or vibration of the air or other medium with which the ear is in contact; the effect of an impression made on the organs of hearing by an impulse or vibration of the air caused by a collision of bodies, or by other means; noise; report; as, the sound of a drum; the sound of the human voice; a horrid sound; a charming sound; a sharp, high, or shrill sound.

Wikipedia

Sound

In physics, sound is a vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the reception of such waves and their perception by the brain. Only acoustic waves that have frequencies lying between about 20 Hz and 20 kHz, the audio frequency range, elicit an auditory percept in humans. In air at atmospheric pressure, these represent sound waves with wavelengths of 17 meters (56 ft) to 1.7 centimeters (0.67 in). Sound waves above 20 kHz are known as ultrasound and are not audible to humans. Sound waves below 20 Hz are known as infrasound. Different animal species have varying hearing ranges.

Examples of use of sound
1. I never forget that sound, never forget that sound.
2. They don‘t sound bad, but they don‘t sound great.
3. This sound may sound un–Sudanese but it is essential.
4. "I want you to look not at sound bites but at sound works." Sen.
5. The effect produces a less headphone–like sound, closer to the sound of actual external speakers.