Definition of acoustic in English:

acoustic

adjective

  • 1Relating to sound or the sense of hearing.

    ‘dogs have a much greater acoustic range than humans’
    • ‘Other acoustic experiences, such as the hearing of human voices, may have been due to direct electric stimulation of the auditory cortex.’
    • ‘The place has been designed with a great acoustic sense.’
    • ‘Although it is impossible to prevent many diseases that affect the hearing, it is possible to reduce the risk of acoustic trauma (hearing loss from loud noise).’
    • ‘But very sensitive hearing is necessary to hear all the acoustic cues in speech sounds.’
    • ‘Once the pod is in acoustic range, Luna will be released in hopes he reunites with his family.’
    • ‘Today, enemy targets can be engaged at ranges where they are seen on an electronic device solely as an item of electromagnetic, infrared, or acoustic data.’
    • ‘It was an excellent environment for the seismic acoustic and infrared passive sensors once you could get them into the ground.’
    • ‘To achieve this coordination, songbirds must open and close their beaks in register with the acoustic frequency of the sound being produced.’
    • ‘Until now, no one had measured the absolute acoustic profile of the human body - that is, how the body scatters sound waves independently of where it happens to be.’
    • ‘At 50° C an acoustic alarm sounds and the PC system shuts itself down at temperatures above 53° C.’
    • ‘Such samples display a large number of acoustic modes, with little separation in frequency.’
    • ‘But even when they separate they remain in acoustic range.’
    • ‘Their underwater acoustic sense and echo-location skills are legendary.’
    • ‘To find out, the research team devised an experiment using an electronic shaker that converts acoustic sounds into vibrations.’
    • ‘On the other hand, cooling makes acoustic noise, which human beings don't tolerate well.’
    • ‘Quickly sensing the acoustic mismatch, the woman closes the bathroom door, muting the water sounds.’
    • ‘Microjets can be powered by compressed air, thermal bubbles, and even acoustic waves.’
    • ‘The hard terrazzo floors and glass walls that border the terraced atrium bounce ambient noise around, creating a sense of acoustic community.’
    • ‘As it happens, these neurons are also very sensitive to the acoustic boundaries between speech sounds, as are monkeys and human infants.’
    • ‘Thus, territorial male bullfrogs do not appear to assess an opponent's fighting ability based solely on the fundamental frequency of acoustic signals.’
    1. 1.1 (of building materials) used for soundproofing or modifying sound.
      ‘acoustic tiles’
      • ‘Highly light reflective, acoustic tiles let more available light reflect back into the room, and save money in utility costs.’
      • ‘My room came with a vast stain spreading across the acoustic tiles in the ceiling.’
      • ‘As a patient, you spend a great deal of time, sometimes days at a time in severe situations, flat on your back and staring at stained acoustic tiles.’
      • ‘Interior surfaces are of pine and birch plywood boarding and acoustic wood louvres.’
      • ‘The floor was tiled in striking high quality vitreous tiles from Germany and the ceiling lined with acoustic tiles to minimise sound.’
      • ‘Then open-web joists would be installed between the arch segments, and when these were completed acoustic metal decking was attached to the entire assembly.’
      • ‘Innovations within the product lines of acoustic tile manufacturers allow for a more clean, crisp uncluttered aesthetic.’
      • ‘A smug smile on her face, she reached up and found her grip on the acoustic tile.’
      • ‘There was a bullet hole in one of the stained acoustic tiles there.’
      • ‘Then you can start deciding things like where to place furniture and acoustic material, finding a good room that's not a hallway next to a jackhammer and so on.’
      • ‘But even genuine acoustic foam comes in different fire-resistant grades.’
      • ‘You should use an airless gun to prime and paint your acoustic ceiling, by angling your gun slightly and spraying it lightly in all directions.’
      • ‘Lead paint, which existed mostly on the window frames and in acoustic tile, were carefully removed, and the asbestos is being either removed or encapsulated.’
      • ‘When acoustic texture material is wet, asbestos fibers are withheld from release into the air.’
      • ‘When noise reduction is the goal, it is important to look at the acoustic tiles' NRC or CAC ratings.’
      • ‘It pertains to the removal of sprayed asbestos coatings used for thermal and acoustic insulation in buildings and on boilers in industrial plants.’
      • ‘Hard, smooth surfaces are more sound-reflective than rough surfaces, or ones that are covered with fabric or acoustic materials.’
      • ‘Apparently this quietness was achieved by using ‘sound-deadening materials, additional door seals and acoustic glass’.’
      • ‘The ceiling itself mirrored the floor - white acoustic tile, smooth and nearly unbroken.’
      • ‘It's not recommended to roll paint on an acoustic ceiling, as it is very porous.’
    2. 1.2 (of an explosive mine or other weapon) able to be set off by sound waves.
      • ‘Alternately, the use of high power microwave technology, acoustic weapons or nonlethal chemicals might be called for.’
      • ‘The start of a three week blockage of the Suez Canal by the Germans placing magnetic and acoustic mines there.’
      • ‘This is the noise-maker for sweeping acoustic mines.’
      • ‘At the outbreak of the Second World War, he transferred to the Admiralty, designing magnetic and acoustic mines in which the circuitry would enable enemy ships and sweeps to be distinguished.’
      • ‘What about nonlethal devices such as acoustic or heat ‘weapons’?’
      • ‘When the Second World War broke out, Crick was put to work for the British Navy developing magnetic and acoustic mines for use against German submarines and ships.’
      • ‘So, on the night of 3 November, 1940, magnetic and acoustic mines parachuted down from the Heinkels into the sea close to Milford Haven.’
      • ‘During the war, he joined the British Admiralty Research Laboratories where he designed acoustic and magnetic mines.’
      • ‘Current capabilities may limit future acoustic weapons to close-in engagements due to range and size of the required equipment.’
      • ‘Once this had been introduced, the Germans began to use acoustic mines which were detonated by the sound of a ship's propeller acting on a diaphragm within them.’
      • ‘Agate generates the acoustic signature of any ship in order to trigger acoustic mines.’
  • 2(of popular music or musical instruments) not having electrical amplification.

    ‘a sad, gentle acoustic ballad’
    ‘old-fashioned acoustic instruments’
    • ‘It's a total transition - he's gone from acoustic jazz into electric jazz-rock.’
    • ‘Murray, who is no longer with a band, played a set of rocksteady and reggae tunes on acoustic guitar.’
    • ‘You got your folky-picked acoustic guitar riff, check.’
    • ‘It's a beautiful album, and solo acoustic music doesn't get much better than this.’
    • ‘It's been a while since an album has taken such great lengths to show that there is some tangible relation between the worlds of electronic and acoustic music.’
    • ‘It's a superb example of acoustic jazz ensemble playing and lovely multi-horn arranging.’
    • ‘For anybody who likes playing the acoustic guitar, this album is a must.’
    • ‘Yay, it's got both acoustic guitars and electronics!’
    • ‘the Pacific women's trio Manuhiri from New Zealand and Tonga, with their contemporary acoustic music and lush harmonies.’
    • ‘Appropriately, the movements are accompanied by live electronic and acoustic music.’
    • ‘Because the band which has defined the sound of contemporary bluegrass over the last decade or so raises the bar in acoustic music with every new record.’
    • ‘I listen to as much acoustic music as electronic these days; I like to keep an open mind.’
    • ‘While another strong contender for best track on the album is Black Mountain, a haunting ballad built around a strong acoustic guitar riff and some heady stabs of violin.’
    • ‘‘St Christopher’ gently swings to a jazzy acoustic guitar and resembles nothing less than prime period Joni Mitchell.’
    • ‘Neil Young says Jansch did for the acoustic guitar what Jimi Hendrix did for the electric guitar.’
    • ‘It's driven by a great bassline, some excellent acoustic guitar riffs and finds Nic Denson's vocals at their most spellbinding.’
    • ‘He also switched between acoustic and electric guitar regularly throughout the night.’
    • ‘This album is pure laid back grooves, acoustic guitars, and blissed out melodies.’
    • ‘In some quieter moments acoustic and slide guitars give them a breezy alt-country feel, while other songs seem designed for dancing.’
    • ‘While many musicians of his generation were turning their back on acoustic music, he remained a loyal folkie.’

noun

  • 1usually acousticsThe properties or qualities of a room or building that determine how sound is transmitted in it.

    ‘Symphony Hall has perfect acoustics’
    • ‘The venue, Victoria Hall, is a beautiful 101-year-old local landmark which has superb acoustics and facilities and lends itself perfectly to this event.’
    • ‘‘The acoustics in this house can play tricks with sounds,’ the earl continued.’
    • ‘But the shape of the rooms created terrible acoustics.’
    • ‘Good sound guys can figure out the acoustics during sound check relatively quickly, but that's only going to go so far.’
    • ‘The attention to detail is magnificent and manifests itself in everything from the programme to the seating arrangements to the acoustics.’
    • ‘The acoustics in this room sometimes are a little deceptive.’
    • ‘They all resonate at the same pitch, yet produce a constant, layered dissonance due to the room's inconsistent acoustics.’
    • ‘The cave's acoustics intensified the sound, causing her to become fully aware of the headache she was trying to ignore in the hope of placating it.’
    • ‘The acoustics in the living room, thanks to its high ceiling and scant furniture, were incredible.’
    • ‘The courtroom was huge, but the acoustics in the room were good and even the slightest bit of breathing could be heard.’
    • ‘Luckily the room was not without excellent acoustics (even if her ears were still ringing a bit).’
    • ‘His voice, as heard over the television, is not ideally modulated, but it was probably adapted to the acoustics in the room as he heard his own voice.’
    • ‘Wavy perforated metal panels aid the room's acoustics yet appear to float off of the brick walls.’
    • ‘‘The perfect acoustics in the Heritage Centre make it the ideal venue for storytelling, music and song,’ says Ms Byrne.’
    • ‘I look at this place and think, ‘jeez, from the perfect acoustics and sightlines of the Roman amphitheaters, it's all been downhill from there.’’
    • ‘However, the acoustics in that room where dreadful (very high ceiling), but Eric and Andre (2nd guitar and bass) did a good job and put on a good show.’
    • ‘The beautiful opera house claims to be one of the best in Europe, with perfect acoustics and frescoes painted by Karoly Lotz.’
    • ‘The acoustics within a room depend on the key issues of reverberation, room shape, and interior noise control.’
    • ‘Unfortunately, the debate was hampered by the acoustics in the hall, and many of the participants, myself included, were unable to follow much of what was said.’
    • ‘The Cathedral is a beautiful venue for concerts and recitals and all musicians who play there comment on the wonderful acoustic of the building.’
  • 2acousticstreated as singular The branch of physics concerned with the properties of sound.

    • ‘He studied continuum mechanics, lunar theory with Clairaut, the three body problem, elasticity, acoustics, the wave theory of light, hydraulics, and music.’
    • ‘Rayleigh developed laboratory courses in heat, electricity and magnetism, properties of matter, optics, and acoustics.’
    • ‘In the following article, Matthew Malsky analyzes the effect of digital technology on the science of acoustics in pursuit of a ‘real’ listening experience.’
    • ‘Since that time, considerable advances have been made in the science of underwater acoustics and the hardware used for the detection of faint signals.’
    • ‘He studied mathematical physics and acoustics producing a major study in 1862 which looked at musical theory and the perception of sound.’
    • ‘Current advances in science and technology, particularly in the area of acoustics and high technologies, enable a more complete utilization of the audio band.’
    • ‘Thus, the field of acoustics covers a vast array of different areas of use, and they are constantly expanding.’
    • ‘Unit Conversion Utility - consists of 47 electronic conversions in seven categories useful for forecasting, acoustics and nautical science.’
    • ‘During World War I Fubini studied the accuracy of artillery fire and these investigations led him on to work on acoustics and electricity.’
    • ‘It was Murray who taught Alexander Graham Bell the basics of acoustics and electricity and thus was the grandfather, if not the father, of the telephone.’
    • ‘Music and the science of sound and acoustics stand on the brink of huge change.’
    • ‘Swedenborg joined his mysticism with a keen interest in natural science, especially acoustics.’
    • ‘Duhamel worked on partial differential equations and applied his methods to the theory of heat, to rational mechanics and to acoustics.’
    • ‘Thompson, for example, could easily have written a history of technological changes in the history of sound and acoustics.’
    • ‘He specializes in ocean acoustics, signal processing and physical oceanography.’
    • ‘Driven to match his father's prominence as a speech analyst, he undertook research in acoustics and speech with the aid of electrical and mechanical devices.’
  • 3A musical instrument without electrical amplification, typically a guitar.

    • ‘Then he swaps to bass guitar or acoustic, Derek comes in on violin, Basil starts to sing.’
    • ‘Sitting on the stage beside the case he opened it and pulled out a beautiful cherry stained acoustic.’
    • ‘‘12 String Thing’ is exactly what the title suggests, a thorough workout on 12 string acoustic.’
    • ‘Both use guitars in, mostly, their original form to expose the dichotomy between the electronic and the acoustic.’
    • ‘The trio has traded in their pedals and sneers for slides and acoustics.’
    • ‘I was about to knock on the door when I heard a snare hit, followed by a bass guitar, and an acoustic.’
    • ‘The lead vocal and guitars on ‘Bitch’ are scratches - the vocal was recorded as I was playing a Martin acoustic, live to tape.’
    • ‘The singer of Little Plato is as diminutive as his bands name, at times hidden behind his jumbo acoustic.’
    • ‘He recently released a jazz-based CD which shows his command of the steel and nylon acoustics as well as electric jazz guitar.’
    • ‘Seth picked up Ferris' brand new black Taylor acoustic.’

Origin

Mid 17th century: from Greek akoustikos, from akouein ‘hear’.

Pronunciation

acoustic

/əˈko͞ostik//əˈkustɪk/