Acoustic resonance is an important consideration for instrument builders, as most acoustic instruments use resonators, such as the strings and body of a violin, the length of tube in a flute, and the shape of, and tension on, a drum membrane.

Acoustic problems always require allowing compressibility, since sound waves are compression waves involving changes in pressure and density of the medium through which they propagate.

Acoustic guitars are several notable subcategories within the acoustic guitar group: classical and flamenco guitars ; steel-string guitars, which include the flat-topped, or " folk ," guitar ; twelve-string guitars ; and the arched-top guitar.

On 26 January 2004, the film Yesspeak premiered in a number of select theatres, which was followed by a closed-circuit live acoustic performance of the group that was released as Yes Acoustic: Guaranteed No Hiss later on.

Acoustic phonetics is a subfield of phonetics which deals with acoustic aspects of speech sounds.

Acoustic neuroma-tumor, usually benign, which may develop on the hearing and balance nerves and can cause gradual hearing loss, tinnitus, and / or dizziness.

* Acoustic Control Corporation, a company which produced instrument amplifiers using Acoustic as a brand name

* Acoustic cryptanalysis, in cryptography, a side channel attack which exploits sounds

Acoustic energy is variation in the air pressure that can be represented as sound waves, which are then perceived by the human auditory system as sound.

In 2008, Keaggy received the Gold Level Award as the " Best Spiritual / Worship Guitarist ", as voted by readers of Acoustic Guitar Magazine, as well as appearing in the form of vocals and lead guitar on the Richard Cummins CD, Moments, which was nominated for " Best Pop / Contemporary Album of the Year " by the Canadian GMA's, Covenant award.

Acoustic and electro-acoustic instruments which have a resonator as an integral part of the instrument, and solid-body electric chordophones.

The deviations from this theme are Punk Goes Acoustic and Punk Goes Acoustic 2 ( in which the featured bands recorded acoustic versions of their own songs ); Punk Goes Pop 1, 2, 3 and 4 ; and Punk Goes Classic Rock.

Recently completed is a 450-seat concert hall, called the Bramall Music Building, which completes the redbrick semicircle of the Aston Webb building designed by Glenn Howells Architects with venue design by Acoustic Dimensions.

According to Tchort's writings in the booklet to The Acoustic Verses, Green Carnation's next studio release is going to be the second part of the " The Chronicles of Doom " trilogy, which began with Light of Day, Day of Darkness, and is going to be titled The Rise and Fall of Mankind.

" In November of that year, he released a second iTunes-only album, Fire, the Acoustic Album, which also featured Richards, Bentley, and Longoria.

Also during 2004, country group Rascal Flatts released a cover of " Bless the Broken Road ," which the Nitty Gritty Dirt Band had recorded on Acoustic, from 1994.

This continued on the last two Sebadoh releases Harmacy and The Sebadoh, after which the group went on hiatus until 2003 / 2004 when he and Lou Barlow toured as a duo on a tour they called " Turbo Acoustic ", with Loewenstein and Barlow playing along to drum tracks that were pre-recorded by Loewenstein.

Acoustic phonetics is a subfield of phonetics which deals with acoustic aspects of speech sounds.

This little book was followed in 1960 by Fant " Acoustic Theory of Speech Production ", which has remained the major theoretical foundation for speech acoustic research in both the academy and industry.

" In 1999, he released Acoustic Christmas Carols: Cowboy Christmas II, which included Murphey's quiet renditions of traditional Christmas songs, and featured his son Ryan and daughter Laura.

Six months after the release of " Butterfly House ", The Coral released " Butterfly House Acoustic ", a limited edition acoustic re-recording of the entire album which they completed in a single day, after positive reviews of their acoustic live performances.

* Acoustic cryptanalysis — attacks which exploit sound produced during a computation ( rather like power analysis ).

" Creep ( Acoustic )" ( which had also closed the earlier Japanese Itch EP ) only appears on the EP release.

Acoustic theory is the field relating to mathematical description of sound waves.

** Acoustic dispersion, for sound waves

Sometimes, for the sake of appearance or of the desired " feel " of the instrument, a drum with a trigger will be used as a trigger pad by muffling it so heavily that no significant sound at all is produced, see Electronic drum # Acoustic triggered drum kit.

* Acoustic location, the general use of sound to locate objects

Acoustic stethoscopes are familiar to most people, and operate on the transmission of sound from the chest piece, via air-filled hollow tubes, to the listener's ears.

Acoustic or sound waves travel at speed given by

Acoustic resonance is a branch of mechanical resonance that is concerned with the mechanical vibrations across the frequency range of human hearing, in other words sound.

Acoustic phonetics deals with the physical properties of sound, what sounds exactly are coming from the person speaking.

* Acoustic keyloggers: Acoustic cryptanalysis can be used to monitor the sound created by someone typing on a computer.

; Acoustic tablets: Early models were described as spark tablets — a small sound generator was mounted in the stylus, and the acoustic signal picked up by two microphones placed near the writing surface.

Acoustic enhancement systems help give a more even sound in the hall and prevent " dead spots " in the audience seating area by "... augment a hall's intrinsic acoustic characteristics.

* Scanning Acoustic Tomography, a research process using focused sound

However, Electric Acoustic Stimulation ( EAS ) devices, including the Hybrid " short-electrode " cochlear implant, have been developed that combine a cochlear implant with a sound amplifying hearing aid.

Acoustic amplifiers are designed to produce a " clean ", transparent, " acoustic " sound when used with acoustic instruments with built-in transducer pickups and / or microphones.

* Acoustic amplifiers, similar in many ways to keyboard amplifiers but designed specifically to produce a " clean ," transparent, " acoustic " sound when used with acoustic instruments with built-in transducer pickups and / or microphones.

Acoustic amplifiers are designed to produce a " clean ", transparent, " acoustic " sound when used with acoustic instruments with built-in transducer pickups and / or microphones.

Green Carnation's trend of music has continuously become less and less heavy after every release ; from straight forward death metal, to a gothic metal / doom metal / progressive metal sound, to a melancholic hard rock-sounding form of progressive rock and in 2006, went as far as to releasing an entirely acoustic album Acoustic Verses.

* Acoustic or pressure ( p ) modes, driven by internal pressure fluctuations within a star ; their dynamics being determined by the local speed of sound.

Other efforts included the album Acoustic, spotlighting their " wooden " sound, a duet with Karla Bonoff, " You Believed in Me " for the MCA Olympic compilation, One Voice, and a cover version of Buddy Holly's " Maybe Baby " for the Decca tribute album, Not Fade Away.

Acoustic impedance indicates how much sound pressure is generated by the vibration of molecules of a particular acoustic medium at a given frequency.