Sound

thumb|upright=1.4|Video of air pollution data from Beijing being conveyed as a piece of music Sonification is the use of non-speech audio to convey information or perceptualize data. Auditory perception has advantages in temporal, spatial, amplitude, and frequency resolution that open possibilities as an alternative or complement to visualization techniques.

standard audio signal level

study in linguistics of resemblances between sounds and meanings

specialized loudspeaker that reproduces a portion of the audible frequency range

audio exceeding CD capability

health consequences of exposure to elevated sound levels

thumb | rightAeroacoustics is a branch of acoustics that studies noise generation via either turbulent fluid motion or aerodynamic forces interacting with surfaces. Noise generation can also be associated with periodically varying flows. A notable example of this phenomenon is the Aeolian tones produced by wind blowing over fixed objects.

measurement of signal strength and intensity

sound other than the sound being monitored (primary sound)

A hum (/hʌm/ ) is a sound made by producing a wordless tone with the mouth closed, forcing the sound to emerge from the nose. To hum is to produce such a sound, often with a melody. It is also associated with thoughtful absorption, 'hmm'.

Psychoacoustical phenomenon

noise encountered in the workplace

A gunshot from the 5-inch/54-caliber Mark 45 gun|Mark 45 gun|thumb

noise pollution inside or outside an operating aircraft

time derivative of the sound particle displacement

right|thumb|250px|Edge of a 35mm film print showing the soundtracks. The outermost strip (left of picture) contains the Sony Dynamic Digital Sound|SDDS track as an image of a digital signal; the next contains the perforations used to drive the film through the projector, with the [[Dolby Digital track (grey areas) with the Dolby Double-D logo, between them. The two tracks of the analog soundtrack on the next strip are bilateral variable-area, where amplitude is represented as a waveform. These are generally encoded using Dolby Stereo matrixing to simulate four tracks. Finally, to the far right

measure of the energy loss of sound propagation in media; phenomenon when hearing protectors help reduce acoustic flux from flowing into the ears, is measured in decibels (dBs)

Amount by which a signal can exceed a designated nominal level

thumb|305px| An example of rarefaction is also as a Phase (waves)|phase in a [[sound wave or phonon. Half of a sound wave is made up of the compression of the medium, and the other half is the decompression or rarefaction of the medium.]] Rarefaction is the reduction of an item's density, the opposite of compression. Like compression, which can travel in waves (sound waves, for instance), rarefaction waves also exist in nature. A common rarefaction wave is the area of low relative pressure following a shock wave (see picture).

music term and genre; technique where newly branded sound objects or compositions, including songs, are created from collage

in phonetics, measure of how comprehensible speech is

studies the relationship, mediated through sound, between human beings and their environment

level of background noise in a signal

interior chamber of a wind instrument

theory

Sonology is a neologism used to describe the study of sound in a variety of disciplines.

existing piece of music or audio used in editing phase

instantaneous displacement of a particle from its equilibrium position in a medium as it transmits a sound wave

thumb|Rotating sonotrode during ultrasonic welding of thin metallic foils.

time-averaged sound energy in a volume

fields of sound which spread less than most transmissions

sound generated by electromagnetic phenomena

sound transmission method

thin vibrating layer that produces sound

a vibrating object which produces a sound; any kind of device made or used for the purpose of generating sound

Television audio encoding standard

measure of speech transmission quality

diffraction of waves in the atmosphere

aspect of history