Sound

A drum produces sound via a vibrating membrane.

In physics, sound is a vibration that typically propagates as an audible wave of pressure, 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.[1] Humans can only hear sound waves as distinct pitches when the frequency lies between about 20 Hz and 20 kHz. Sound above 20 kHz is ultrasound and is not perceptible by humans. Sound waves below 20 Hz are known as infrasound. Different animal species have varying hearing ranges.

Acoustics

Acoustics is the interdisciplinary science that deals with the study of mechanical waves in gases, liquids, and solids including vibration, sound, ultrasound, and infrasound. A scientist who works in the field of acoustics is an acoustician, while someone working in the field of acoustical engineering may be called an acoustical engineer.[2] An audio engineer, on the other hand, is concerned with the recording, manipulation, mixing, and reproduction of sound.

Applications of acoustics are found in almost all aspects of modern society, subdisciplines include aeroacoustics, audio signal processing, architectural acoustics, bioacoustics, electro-acoustics, environmental noise, musical acoustics, noise control, psychoacoustics, speech, ultrasound, underwater acoustics, and vibration.[3]

Other Languages
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Alemannisch: Schall
አማርኛ: ድምጽ
Ænglisc: Swēg
العربية: صوت
aragonés: Sonito
ܐܪܡܝܐ: ܩܠܐ (ܨܘܬܐ)
অসমীয়া: শব্দ
asturianu: Soníu
azərbaycanca: Səs
বাংলা: শব্দ
Bân-lâm-gú: Siaⁿ-im
башҡортса: Тауыш
беларуская: Гук
беларуская (тарашкевіца)‎: Гук
български: Звук
Boarisch: Schoi
བོད་ཡིག: སྒྲ་
bosanski: Zvuk
буряад: Абяан
català: So
čeština: Zvuk
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dansk: Lyd
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español: Sonido
Esperanto: Sono
estremeñu: Son
euskara: Soinu
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français: Son (physique)
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galego: Son
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한국어: 소리
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hrvatski: Zvuk
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Ilokano: Uni
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interlingua: Sono
íslenska: Hljóð
italiano: Suono
עברית: קול
Basa Jawa: Swara
ಕನ್ನಡ: ಶಬ್ದ
ქართული: ბგერა
қазақша: Дыбыс
Kiswahili: Sauti
Kreyòl ayisyen: Son
kurdî: Deng
Кыргызча: Үн
latviešu: Skaņa
lietuvių: Garsas
Limburgs: Geluid
la .lojban.: sance
Luganda: Eddoboozi
magyar: Hang
македонски: Звук
Malagasy: Feo
മലയാളം: ശബ്ദം
مصرى: صوت
Bahasa Melayu: Bunyi
Mirandés: Sonido
монгол: Дуу
မြန်မာဘာသာ: အသံ
Nederlands: Geluid
नेपाली: ध्वनि
नेपाल भाषा: सः
日本語:
Nordfriisk: Gelüüt
norsk: Lyd
norsk nynorsk: Lyd
occitan: Son
oʻzbekcha/ўзбекча: Tovush
ਪੰਜਾਬੀ: ਧੁਨੀ
پنجابی: آواز
پښتو: غږ
Patois: Song
Piemontèis: Son
polski: Dźwięk
português: Som
română: Sunet
Runa Simi: Ruqyay
русиньскый: Звук
русский: Звук
саха тыла: Дорҕоон
ᱥᱟᱱᱛᱟᱲᱤ: ᱥᱟᱰᱮ
संस्कृतम्: शब्दः
Scots: Soond
shqip: Tingulli
සිංහල: ශබ්දය
Simple English: Sound
سنڌي: آواز
slovenčina: Zvuk
slovenščina: Zvok
کوردی: دەنگ
српски / srpski: Звук
srpskohrvatski / српскохрватски: Zvuk
Basa Sunda: Sora
suomi: Ääni
svenska: Ljud
Tagalog: Tunog
தமிழ்: ஒலி
తెలుగు: ధ్వని
ไทย: เสียง
Türkçe: Ses
тыва дыл: Үн (Физика)
українська: Звук
اردو: آواز
vèneto: Són
Tiếng Việt: Âm thanh
Võro: Helü
Winaray: Tingog
吴语: 声音
Xitsonga: Mpfumawulo
ייִדיש: קלאנג
粵語:
Zazaki: Veng
Zeêuws: Geluud
中文: 声音