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  2. A-weighting - Wikipedia

    en.wikipedia.org/wiki/A-weighting

    A graph of the A-, B-, C- and D-weightings across the frequency range 10 Hz – 20 kHz Video illustrating A-weighting by analyzing a sine sweep (contains audio). A-weighting is a form of frequency weighting and 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. [1]

  3. Neumann U 47 - Wikipedia

    en.wikipedia.org/wiki/Neumann_U_47

    Neumann manufactured the U 47 FET between 1969 and 1986 and reissued it in 2014. [2] [3] The Neumann U 47 is regarded as one of several all-time preferred tube recording microphones ("The Big Five"). [4] Its desirability is based primarily on the synergy of its three sound-shaping components: capsule, tube, transformer.

  4. Dishwasher - Wikipedia

    en.wikipedia.org/wiki/Dishwasher

    A dishwasher containing clean dishes. A dishwasher is a machine that is used to clean dishware, cookware, and cutlery automatically. Unlike manual dishwashing, which relies on physical scrubbing to remove soiling, the mechanical dishwasher cleans by spraying hot water, typically between 45 and 75 °C (110 and 170 °F), at the dishes, with lower temperatures of water used for delicate items.

  5. Weighting filter - Wikipedia

    en.wikipedia.org/wiki/Weighting_filter

    Though the noise level of 16-bit audio systems (such as CD players) is commonly quoted (on the basis of calculations that take no account of subjective effect) as −96 dB relative to FS (full scale), the best 468-weighted results are in the region of −68 dB relative to Alignment Level (commonly defined as 18 dB below FS) i.e. −86 dB ...

  6. Sound exposure - Wikipedia

    en.wikipedia.org/wiki/Sound_exposure

    The commonly used reference sound exposure in air is [2] E 0 = 400 μ P a 2 ⋅ s . {\displaystyle E_{0}=400~\mathrm {\mu Pa^{2}\cdot s} .} The proper notations for sound exposure level using this reference are L W /(400 μPa 2 ⋅s) or L W (re 400 μPa 2 ⋅s) , but the notations dB SEL , dB(SEL) , dBSEL, or dB SEL are very common, even if ...

  7. Sound effect - Wikipedia

    en.wikipedia.org/wiki/Sound_effect

    A sound effect (or audio effect) is an artificially created or enhanced sound, or sound process used to emphasize artistic or other content of films, television shows, live performance, animation, video games, music, or other media.

  8. Dynamic range - Wikipedia

    en.wikipedia.org/wiki/Dynamic_range

    In modern recording, this range is often limited through dynamic range compression, which allows for louder volume, but can make the recording sound less exciting or live. [ 50 ] The dynamic range of music as normally perceived in a concert hall does not exceed 80 dB, and human speech is normally perceived over a range of about 40 dB.

  9. Sound power - Wikipedia

    en.wikipedia.org/wiki/Sound_power

    Sound power or acoustic power is the rate at which sound energy is emitted, reflected, transmitted or received, per unit time. [1] It is defined [2] as "through a surface, the product of the sound pressure, and the component of the particle velocity, at a point on the surface in the direction normal to the surface, integrated over that surface."

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