Acoustic problems

Acoustic performers sometimes require preamps with " notch " filters ( to prevent feedback ), reverb, an XLR DI output, or parametric equalization.

Acoustic couplers were cabled to TTYs enabling the Bell Telephone Company standard Model 500 telephone to couple, or fit, into the rubber cups on the coupler, thus allowing the device to transmit and receive a unique sequence of tones generated by the different corresponding TTY keys.

** Acoustic fingerprint, in audio technology, unique code generated from audio samples, allowing computer identification of music

The company has since released several middleware products including the QNX Aviage Multimedia Suite, the QNX Aviage Acoustic Processing Suite and the QNX HMI Suite.

' Acoustic Gathering ', a free one-day music festival, has been held annually in Peasholm Park since September 2005.

The Pontardawe Festival of world music and dance has been held in August each year since 1978 and there are also regular meetings of such music groups as the Pontardawe Acoustic Music Club, held every Wednesday at the Pontardawe Inn ( Y Gwachel ), and the long-established Valley Folk Club, held on the first and third Fridays of each month at the Ivy Bush Hotel.

Although it failed to chart in the United Kingdom, Acoustic reached # 31 in the United States, becoming John Lennon's best charting posthumous US release since 1988's Imagine: John Lennon soundtrack.

Their career started when Raymond Ryan, a station manager of iFm watched one of their gigs, and met up with a producer to produce their 2003 debut album, Soulful Acoustic, which has since been certified Platinum.

He has also performed as an acoustic duo with Strawbs guitarist Brian Willoughby, and as Acoustic Strawbs with Willoughby ( until August 2004 ), Dave Lambert and Chas Cronk ( since September 2004 ).

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 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.

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.

Acoustic cavity resonators, in which sound is produced by air vibrating in a cavity with one opening, are known as Helmholtz resonators.

* Acoustic spectroscopy involves radiated pressure waves.

High and ultra high ultrasound waves are used in Acoustic microscopy

Acoustic holography, applied to MDI data, is ideal for the detection of sources and sinks of acoustic waves on the Sun.

Acoustic levitation uses sound waves to provide a levitating force.

* Acoustic mirror, a device used to focus and amplify sound waves

Acoustic metamaterials are artificially fabricated materials designed to control, direct, and manipulate sound in the form of sonic, infrasonic, or ultrasonic waves, as these might occur in gases, liquids, and solids.

Acoustic logs measure characteristics of sound waves propagated through the well-bore environment.

Acoustic waves encountering material with a radically different speed of sound do not penetrate, but bounce back.

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 emission ( AE ) is the sound waves produced when a material undergoes stress ( internal change ), as a result of an external force.