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29 relations: A-weighting, Alignment level, Audio mastering, Audio system measurements, Band (rock and pop), Compact disc, Cymbal, Distortion, Drum, Equal-loudness contour, Fletcher–Munson curves, ITU-R 468 noise weighting, Loudness, Loudness war, Loudspeaker, Microphone, Noise, Noise measurement, Peak programme meter, Radio, Root mean square, Signal, Sound, Sound level meter, Sound pressure, Sound recording and reproduction, Television, VU meter, Weighting filter.
A-weighting
A-weighting is the most commonly used of a family of curves defined in the International standard IEC 61672:2003 and various national standards relating to the measurement of sound pressure level.
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Alignment level
The alignment level in an audio signal chain or on an audio recording is a defined anchor point that represents a reasonable or typical level.
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Audio mastering
Mastering, a form of audio post production, is the process of preparing and transferring recorded audio from a source containing the final mix to a data storage device (the master); the source from which all copies will be produced (via methods such as pressing, duplication or replication).
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Audio system measurements
Audio system measurements are made for several purposes.
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Band (rock and pop)
A rock band or pop band is a small musical ensemble which performs rock music, pop music or a related genre.
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Compact disc
Compact disc (CD) is a digital optical disc data storage format that was co-developed by Philips and Sony and released in 1982.
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Cymbal
A cymbal is a common percussion instrument.
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Distortion
Distortion is the alteration of the original shape (or other characteristic) of something.
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Drum
The drum is a member of the percussion group of musical instruments.
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Equal-loudness contour
An equal-loudness contour is a measure of sound pressure (dB SPL), over the frequency spectrum, for which a listener perceives a constant loudness when presented with pure steady tones.
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Fletcher–Munson curves
The Fletcher–Munson curves are one of many sets of equal-loudness contours for the human ear, determined experimentally by Harvey Fletcher and Wilden A. Munson, and reported in a 1933 paper entitled "Loudness, its definition, measurement and calculation" in the Journal of the Acoustical Society of America.
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ITU-R 468 noise weighting
ITU-R 468 (originally defined in CCIR recommendation 468-4; sometimes referred to as CCIR-1k) is a standard relating to noise measurement, widely used when measuring noise in audio systems.
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Loudness
In acoustics, loudness is the subjective perception of sound pressure.
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Loudness war
The loudness war (or loudness race) refers to the trend of increasing audio levels in recorded music which many critics believe reduces sound quality and listener enjoyment.
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Loudspeaker
A loudspeaker (or loud-speaker or speaker) is an electroacoustic transducer; which converts an electrical audio signal into a corresponding sound.
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Microphone
A microphone, colloquially nicknamed mic or mike, is a transducer that converts sound into an electrical signal.
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Noise
Noise is unwanted sound judged to be unpleasant, loud or disruptive to hearing.
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Noise measurement
In acoustics, noise measurement can be for the purpose of measuring environmental noise.
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Peak programme meter
A peak programme meter (PPM) is an instrument used in professional audio to indicate the level of an audio signal.
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Radio
Radio is the technology of using radio waves to carry information, such as sound, by systematically modulating properties of electromagnetic energy waves transmitted through space, such as their amplitude, frequency, phase, or pulse width.
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Root mean square
In statistics and its applications, the root mean square (abbreviated RMS or rms) is defined as the square root of the mean square (the arithmetic mean of the squares of a set of numbers).
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Signal
A signal as referred to in communication systems, signal processing, and electrical engineering is a function that "conveys information about the behavior or attributes of some phenomenon".
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Sound
In physics, sound is a vibration that typically propagates as an audible wave of pressure, through a transmission medium such as a gas, liquid or solid.
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Sound level meter
A sound level meter is used for acoustic (sound that travels through air) measurements.
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Sound pressure
Sound pressure or acoustic pressure is the local pressure deviation from the ambient (average or equilibrium) atmospheric pressure, caused by a sound wave.
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Sound recording and reproduction
Sound recording and reproduction is an electrical, mechanical, electronic, or digital inscription and re-creation of sound waves, such as spoken voice, singing, instrumental music, or sound effects.
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Television
Television (TV) is a telecommunication medium used for transmitting moving images in monochrome (black and white), or in colour, and in two or three dimensions and sound.
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VU meter
A volume unit (VU) meter or standard volume indicator (SVI) is a device displaying a representation of the signal level in audio equipment.
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Weighting filter
A weighting filter is used to emphasize or suppress some aspects of a phenomenon compared to others, for measurement or other purposes.
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References
[1] https://en.wikipedia.org/wiki/Programme_level
