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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. Dynamic range - Wikipedia

    en.wikipedia.org/wiki/Dynamic_range

    In music, dynamic range describes the difference between the quietest and loudest volume of an instrument, part or piece of music. [49] 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.

  4. Audio system measurements - Wikipedia

    en.wikipedia.org/wiki/Audio_system_measurements

    Music power has been making a comeback in recent years. See also Audio power . Power specifications require the load impedance to be specified, and in some cases two figures will be given (for instance, the output power of a power amplifier for loudspeakers will be typically measured at 4 and 8 ohms ).

  5. Weighting filter - Wikipedia

    en.wikipedia.org/wiki/Weighting_filter

    Sound has three basic components, the wavelength, frequency, and speed. In sound measurement, we measure the loudness of the sound in decibels (dB). Decibels are logarithmic with 0 dB as the reference. [1] There are also a range of frequencies that sounds can have. Frequency is the number of times a sine wave repeats itself in a second. [2]

  6. Don't Lose The Music - Wikipedia

    en.wikipedia.org/wiki/Don't_Lose_The_Music

    Exposure to loud music can lead to a range of hearing problems such as noise-induced hearing loss, tinnitus and hyperacusis. Here are some commonly quoted comparisons of sound levels: 0 dB(A) - the lowest sound level a person with normal hearing can detect [4] 20 dB(A) - a quiet room at night; 60 dB(A) - ordinary spoken conversation

  7. Dynamic range compression - Wikipedia

    en.wikipedia.org/wiki/Dynamic_range_compression

    The quiet sounds below the threshold remain unaffected. This is the most common type of compressor. A limiter can be thought of as an extreme form of downward compression as it compresses the sounds over the threshold especially hard. Upward compression increases the volume of quiet sounds below a certain threshold.

  8. NYT ‘Connections’ Hints and Answers Today, Friday, December 13

    www.aol.com/nyt-connections-hints-answers-today...

    Spoilers ahead! We've warned you. We mean it. Read no further until you really want some clues or you've completely given up and want the answers ASAP. Get ready for all of today's NYT ...

  9. 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 ...