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  2. Crickler 2: Daily Word Puzzle is a twist on crosswords that's ...

    www.aol.com/news/2012-07-20-crickler-2-ios...

    The iTunes description for Crickler 2 states that this take on the crossword puzzle genre is an "adaptive" experience, that automatically adjusts itself to your own skill level and knowledge. That ...

  3. Sound level meter - Wikipedia

    en.wikipedia.org/wiki/Sound_level_meter

    TOP-1-2-608A [23] This Test Operations Procedure (TOP) describes procedures for measuring the sound levels transmitted through air of developmental and production materiel as a means of evaluating personnel safety, speech intelligibility, security from acoustic detection and recognition, and community annoyance. It covers tests for steady-state ...

  4. Noise dosimeter - Wikipedia

    en.wikipedia.org/wiki/Noise_dosimeter

    By the time the PSEM standard was published, many major sound level meter companies – in both Europe and the USA had a dosimeter in their range. Noise dosimeters are worn by workers in order to track their sound exposure over a period of time. With the accuracy of a type 2 sound level meter, a majority of noise dosimeters measure within ±2 dB A.

  5. Acoustical measurements and instrumentation - Wikipedia

    en.wikipedia.org/wiki/Acoustical_measurements...

    Dynamic range is a measure of how small you can measure a signal relative to the maximum input signal the device can measure. Expressed in decibels, the dynamic range is 20 log (Vmax/Vmin). For example, a device with an input range of ±10 V and a dynamic range of 110 dB will be able to measure a signal as small as 10 μV.

  6. Audio analyzer - Wikipedia

    en.wikipedia.org/wiki/Audio_Analyzer

    An audio analyzer is a test and measurement instrument used to objectively quantify the audio performance of electronic and electro-acoustical devices. Audio quality metrics cover a wide variety of parameters, including level, gain, noise, harmonic and intermodulation distortion, frequency response, relative phase of signals, interchannel crosstalk, and more.

  7. Noise measurement - Wikipedia

    en.wikipedia.org/wiki/Noise_measurement

    Noise measurement can also be part of a test procedure using white noise, or some other specialized form of test signal.In audio systems and broadcasting, specific methods are used to obtain subjectively valid results in order that different devices and signal paths may be compared regardless of the inconsistent spectral distribution and temporal properties of the noise that they generate.

  8. VU meter - Wikipedia

    en.wikipedia.org/wiki/VU_meter

    An analog VU meter with peak LED. A volume unit (VU) meter or standard volume indicator (SVI) is a device displaying a representation of the signal level in audio equipment.. The original design was proposed in the 1940 IRE paper, A New Standard Volume Indicator and Reference Level, written by experts from CBS, NBC, and Bell Telephone Laboratories. [1]

  9. Microphone - Wikipedia

    en.wikipedia.org/wiki/Microphone

    The measure is often stated in dB(A), which is the equivalent loudness of the noise on a decibel scale frequency-weighted for how the ear hears, for example: "15 dBA SPL" (SPL means sound pressure level relative to 20 micropascals). The lower the number the better.

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