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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.
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Acoustic and energy
; downslope enhancement: Acoustic energy from a source in shallow water changes from a bottom bounce path to a convergence zone or sound channel path as it travels to deeper water and is concentrated down the slope to a receiver in deep water.
; upslope enhancement: Acoustic energy from a source in deep water changes from a convergence zone or sound channel path to a bottom bounce path as the bottom shoals and is concentrated up the slope to a receiver in shallow water.
Acoustic emissions can be detected in frequency ranges under 1 kHz, and have been reported at frequencies up to 100 MHz, but most released energy within 1 kHz to 1 MHz.
Acoustic and is
Acoustic theory is the field relating to mathematical description of 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 couplers are still used by people travelling in areas of the world where electrical connection to the telephone network is illegal or impractical.
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 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.
Adaptive Transform Acoustic Coding ( ATRAC ) is a family of proprietary audio compression algorithms developed by Sony.
Acoustic phonetics is a subfield of phonetics which deals with acoustic aspects of speech sounds.
However, Adaptive Transform Acoustic Coding 3, or ATRAC3, is a separate format developed by Sony )
He also released Acoustic Cafe, an album, that with the exception of " You Have My Heart ," is a collection of covers ranging from Bob Dylan (" If Not For You ," " Make You Feel My Love ") to Cyndi Lauper (" Time After Time ").
It is also the home of the Acoustic Festival of Britain
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.
Acoustic Doppler velocimetry ( ADV ) is designed to record instantaneous velocity components at a single point with a relatively high frequency.
A fundamental feature of professional videoconferencing systems is Acoustic Echo Cancellation ( AEC ).
Giltrap is a regular columnist for the Acoustic magazine.
Acoustic Radiation Force Impulse ( ARFI ) Imaging is another imaging modality being researched to non-invasively characterize liver stiffness,
The company is remembered in particular for its Acoustic 361 bass stack, consisting of an Acoustic 360 bass pre-amplifier and one or two Acoustic 361 W-bins, each featuring a built-in 200-watt RMS power amplifier and a rear-facing 18 " Cerwin-Vega loudspeaker.
The Half Moon is also home to The Acoustic Club every Thursday, a monthly blues club and Club Blub, a monthly live showcase for both established acts and new bands.
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.
Acoustic holography, applied to MDI data, is ideal for the detection of sources and sinks of acoustic waves on the Sun.
The final track, " Creep ( Acoustic )", is also present on the My Iron Lung EP, and was recorded at KROQ-FM studios, Los Angeles, on 13 July 1993.
Acoustic and variation
Acoustic horns convert large pressure variations with a small displacement area into a low pressure variation with a large displacement area and vice versa.
A variation of the song is played on acoustic guitar on Paul Gilbert's solo album Acoustic Samurai of 2003.
Acoustic and air
Acoustic location in air was used before the introduction of radar.
Acoustic cavity resonators, in which sound is produced by air vibrating in a cavity with one opening, are known as Helmholtz resonators.
* Acoustic EQ-Designed with help from Randall May, the Acoustic EQ snares fetaures a slide vent that allows the player to adjust the amount of air escaping from it.
A similar calibration procedure to the above is used for air conduction audiometry, using either an Artificial Ear or Acoustic Reference Coupler.
Acoustic and pressure
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 spectroscopy involves radiated pressure waves.
* Acoustic or pressure ( p ) modes, driven by internal pressure fluctuations within a star ; their dynamics being determined by the local speed of sound.
Acoustic impedance indicates how much sound pressure is generated by the vibration of molecules of a particular acoustic medium at a given frequency.
Acoustic impedance can be expressed in either its constituent units ( pressure per velocity per area ) or in rayls per square meter.
The muffler is engineered as an acoustic soundproofing device designed to reduce the loudness of the sound pressure created by the engine by way of Acoustic quieting.
Acoustic analog recording is achieved by a small microphone diaphragm that can detect changes in atmospheric pressure ( acoustic sound waves ) and record them as a graphic representation of the sound waves on a medium such as a phonograph ( in which a stylus senses grooves on a record ).
Acoustic and can
Acoustic noise can be anything from quiet but annoying to loud and harmful.
Acoustic instruments can also be made out of artificial materials, such as carbon fiber and fiberglass ( particularly the larger instruments, such as cellos and basses ).
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 keyloggers: Acoustic cryptanalysis can be used to monitor the sound created by someone typing on a computer.
Acoustic overexposure can lead to temporary or permanent loss of hearing.
Acoustic quieting, noise mitigation, and noise control can be used to limit unwanted noise.
** Surface Acoustic Wave touchscreens, an electronic visual display that can detect the presence and location of a touch within the display area
Acoustic homing can be either Passive or Active in nature.
" " Acoustic instruments and unamplified, ' pure '- tone singing can now not be heard except as contrasts to more recent kinds of sounds, just as live performances are inevitably ' checked ' against memories of recordings ," and " live performances have to try to approximate the sounds which inhabit this consciousness.
Bandits of the Acoustic Revolution can be considered only a smaller side project, as it has taken a back seat to Tomas Kalnoky ’ s main focus, Streetlight Manifesto.
Originally on 1983's Twang Bar King album, the song can also be found on the Desire of the Rhino King compilation and in an acoustic version on both The Acoustic Adrian Belew and the Salad Days compilation.
Acoustic pianos have expression pedals which can change the response or tone of the instrument, such as a sustain pedal and a soft pedal.
Ginger of The Wildhearts performed " If I Had You " live at the 12 Bar in 1998, which can be heard on the " Grievous Acoustic Behaviour-Live at the 12 bar " double album.
Acoustic panels and bass traps, can improve the sound in the room.
Acoustic torpedoes can be compared to modern fire-and-forget guided missiles.
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