Definition of acoustic in English:

acoustic

adjective

  • 1Relating to sound or the sense of hearing.

    ‘dogs have a much greater acoustic range than humans’
    • ‘Quickly sensing the acoustic mismatch, the woman closes the bathroom door, muting the water sounds.’
    • ‘Their underwater acoustic sense and echo-location skills are legendary.’
    • ‘It was an excellent environment for the seismic acoustic and infrared passive sensors once you could get them into the ground.’
    • ‘On the other hand, cooling makes acoustic noise, which human beings don't tolerate well.’
    • ‘Microjets can be powered by compressed air, thermal bubbles, and even acoustic waves.’
    • ‘But very sensitive hearing is necessary to hear all the acoustic cues in speech sounds.’
    • ‘Other acoustic experiences, such as the hearing of human voices, may have been due to direct electric stimulation of the auditory cortex.’
    • ‘But even when they separate they remain in acoustic range.’
    • ‘As it happens, these neurons are also very sensitive to the acoustic boundaries between speech sounds, as are monkeys and human infants.’
    • ‘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.’
    • ‘To achieve this coordination, songbirds must open and close their beaks in register with the acoustic frequency of the sound being produced.’
    • ‘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).’
    • ‘Such samples display a large number of acoustic modes, with little separation in frequency.’
    • ‘Thus, territorial male bullfrogs do not appear to assess an opponent's fighting ability based solely on the fundamental frequency of acoustic signals.’
    • ‘Once the pod is in acoustic range, Luna will be released in hopes he reunites with his family.’
    • ‘At 50° C an acoustic alarm sounds and the PC system shuts itself down at temperatures above 53° C.’
    • ‘The hard terrazzo floors and glass walls that border the terraced atrium bounce ambient noise around, creating a sense of acoustic community.’
    • ‘To find out, the research team devised an experiment using an electronic shaker that converts acoustic sounds into vibrations.’
    • ‘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.’
    • ‘The place has been designed with a great acoustic sense.’
    1. 1.1 (of building materials) used for soundproofing or modifying sound.
      ‘acoustic tiles’
      • ‘When acoustic texture material is wet, asbestos fibers are withheld from release into the air.’
      • ‘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.’
      • ‘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.’
      • ‘But even genuine acoustic foam comes in different fire-resistant grades.’
      • ‘Highly light reflective, acoustic tiles let more available light reflect back into the room, and save money in utility costs.’
      • ‘Interior surfaces are of pine and birch plywood boarding and acoustic wood louvres.’
      • ‘A smug smile on her face, she reached up and found her grip on the acoustic tile.’
      • ‘When noise reduction is the goal, it is important to look at the acoustic tiles' NRC or CAC ratings.’
      • ‘It's not recommended to roll paint on an acoustic ceiling, as it is very porous.’
      • ‘It pertains to the removal of sprayed asbestos coatings used for thermal and acoustic insulation in buildings and on boilers in industrial plants.’
      • ‘The floor was tiled in striking high quality vitreous tiles from Germany and the ceiling lined with acoustic tiles to minimise sound.’
      • ‘My room came with a vast stain spreading across the acoustic tiles in the ceiling.’
      • ‘The ceiling itself mirrored the floor - white acoustic tile, smooth and nearly unbroken.’
      • ‘There was a bullet hole in one of the stained acoustic tiles there.’
      • ‘Apparently this quietness was achieved by using ‘sound-deadening materials, additional door seals and acoustic glass’.’
      • ‘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.’
      • ‘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.’
      • ‘Innovations within the product lines of acoustic tile manufacturers allow for a more clean, crisp uncluttered aesthetic.’
      • ‘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.’
      • ‘Hard, smooth surfaces are more sound-reflective than rough surfaces, or ones that are covered with fabric or acoustic materials.’
    2. 1.2 (of a device or system) utilizing sound energy in its operation.
      • ‘In contrast to the centrality of the plan, the ceiling evokes the axiality of traditional church spaces and generates a remarkable degree of drama through acoustic devices.’
      • ‘That plan will see a ban on driftnets in some EU waters and the use of acoustic devices, or pingers, to repel dolphins and related species from driftnets.’
      • ‘Just as camera lenses focus light, acoustic lenses reshape sound, spreading it horizontally to increase the sensation of space.’
      • ‘At Oxford University, researchers have developed an acoustic camera that builds up visual pictures using sound.’
      • ‘The system propagates an acoustic energy beam, which the antenna array directs against one of the buildings.’
      • ‘This structure is derived from the melon of other odontocetes, and like the melon, may serve as a sort of acoustic lens.’
      • ‘‘That tide gauge uses an acoustic device to record the level of the sea's surface,’ she explains.’
      • ‘Just Recently researchers were able to determine the damage to the ship by imaging the sunken liner with an acoustic device known as a sub-bottom profiler.’
    3. 1.3 (of an explosive mine or other weapon) able to be set off by sound waves.
      • ‘This is the noise-maker for sweeping acoustic mines.’
      • ‘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.’
      • ‘During the war, he joined the British Admiralty Research Laboratories where he designed acoustic and magnetic mines.’
      • ‘So, on the night of 3 November, 1940, magnetic and acoustic mines parachuted down from the Heinkels into the sea close to Milford Haven.’
      • ‘What about nonlethal devices such as acoustic or heat ‘weapons’?’
      • ‘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.’
      • ‘Alternately, the use of high power microwave technology, acoustic weapons or nonlethal chemicals might be called for.’
      • ‘Current capabilities may limit future acoustic weapons to close-in engagements due to range and size of the required equipment.’
      • ‘The start of a three week blockage of the Suez Canal by the Germans placing magnetic and acoustic mines there.’
      • ‘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.’
  • 2(of popular music or musical instruments) not having electrical amplification.

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

noun

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

    ‘the Symphony Hall has perfect acoustics’
    • ‘The beautiful opera house claims to be one of the best in Europe, with perfect acoustics and frescoes painted by Karoly Lotz.’
    • ‘The Cathedral is a beautiful venue for concerts and recitals and all musicians who play there comment on the wonderful acoustic of the building.’
    • ‘Luckily the room was not without excellent acoustics (even if her ears were still ringing a bit).’
    • ‘But the shape of the rooms created terrible acoustics.’
    • ‘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 acoustics in the living room, thanks to its high ceiling and scant furniture, were incredible.’
    • ‘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.’
    • ‘They all resonate at the same pitch, yet produce a constant, layered dissonance due to the room's inconsistent acoustics.’
    • ‘The courtroom was huge, but the acoustics in the room were good and even the slightest bit of breathing could be heard.’
    • ‘Wavy perforated metal panels aid the room's acoustics yet appear to float off of the brick walls.’
    • ‘The acoustics within a room depend on the key issues of reverberation, room shape, and interior noise control.’
    • ‘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 attention to detail is magnificent and manifests itself in everything from the programme to the seating arrangements to the 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.’
    • ‘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.’’
    • ‘‘The acoustics in this house can play tricks with sounds,’ the earl continued.’
    • ‘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.’
    • ‘‘The perfect acoustics in the Heritage Centre make it the ideal venue for storytelling, music and song,’ says Ms Byrne.’
    • ‘The acoustics in this room sometimes are a little deceptive.’
    • ‘Good sound guys can figure out the acoustics during sound check relatively quickly, but that's only going to go so far.’
  • 2acousticstreated as singular The branch of physics concerned with the properties of sound.

    ‘Tyndall lectured on acoustics’
    • ‘Rayleigh developed laboratory courses in heat, electricity and magnetism, properties of matter, optics, and acoustics.’
    • ‘Music and the science of sound and acoustics stand on the brink of huge change.’
    • ‘Thompson, for example, could easily have written a history of technological changes in the history of sound and acoustics.’
    • ‘During World War I Fubini studied the accuracy of artillery fire and these investigations led him on to work on acoustics and electricity.’
    • ‘Thus, the field of acoustics covers a vast array of different areas of use, and they are constantly expanding.’
    • ‘Current advances in science and technology, particularly in the area of acoustics and high technologies, enable a more complete utilization of the audio band.’
    • ‘Unit Conversion Utility - consists of 47 electronic conversions in seven categories useful for forecasting, acoustics and nautical science.’
    • ‘He studied continuum mechanics, lunar theory with Clairaut, the three body problem, elasticity, acoustics, the wave theory of light, hydraulics, and music.’
    • ‘Since that time, considerable advances have been made in the science of underwater acoustics and the hardware used for the detection of faint signals.’
    • ‘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.’
    • ‘He studied mathematical physics and acoustics producing a major study in 1862 which looked at musical theory and the perception of sound.’
    • ‘He specializes in ocean acoustics, signal processing and physical oceanography.’
    • ‘Duhamel worked on partial differential equations and applied his methods to the theory of heat, to rational mechanics and to 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.’
    • ‘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.’
    • ‘Swedenborg joined his mysticism with a keen interest in natural science, especially acoustics.’
  • 3

    ‘these German-made acoustics are exceptional value and a pleasure to play’
    short for acoustic guitar
    • ‘Both use guitars in, mostly, their original form to expose the dichotomy between the electronic and the acoustic.’
    • ‘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.’
    • ‘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.’
    • ‘The trio has traded in their pedals and sneers for slides and acoustics.’
    • ‘‘12 String Thing’ is exactly what the title suggests, a thorough workout on 12 string acoustic.’
    • ‘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

/əˈkuːstɪk/