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  2. Periodogram - Wikipedia

    en.wikipedia.org/wiki/Periodogram

    It computes a windowed periodogram of each one, and computes an array average, i.e. an array where each element is an average of the corresponding elements of all the periodograms. For stationary processes, this reduces the noise variance of each element by approximately a factor equal to the reciprocal of the number of periodograms.

  3. Minimum mean square error - Wikipedia

    en.wikipedia.org/wiki/Minimum_mean_square_error

    Also, the gain factor, +, depends on our confidence in the new data sample, as measured by the noise variance, versus that in the previous data. The initial values of x ^ {\displaystyle {\hat {x}}} and C e {\displaystyle C_{e}} are taken to be the mean and covariance of the aprior probability density function of x {\displaystyle x} .

  4. Hearing protection fit-testing - Wikipedia

    en.wikipedia.org/wiki/Hearing_protection_fit-testing

    Hearing protector fit-testing is a method that measures the degree of noise reduction obtained from an individual wearing a particular hearing protection device (HPD) - for example, a noise canceling earplug or earmuff. Fit testing is necessary due to the fact that noise attenuation varies across individuals.

  5. Concert-sized stage is being set at Veterans Park for ... - AOL

    www.aol.com/concert-sized-stage-being-set...

    Permits for the Veterans Park stage list the Kamala Harris campaign, but her team said her Friday event in Milwaukee isn't planned at the lakefront. Concert-sized stage is being set at Veterans ...

  6. Autoregressive model - Wikipedia

    en.wikipedia.org/wiki/Autoregressive_model

    An AR(1) process is given by: = + where is a white noise process with zero mean and constant variance . (Note: The subscript on φ 1 {\displaystyle \varphi _{1}} has been dropped.) The process is weak-sense stationary if | φ | < 1 {\displaystyle |\varphi |<1} since it is obtained as the output of a stable filter whose input is white noise.

  7. Netizens Can’t Get Enough Of This Woman Who Built Her ... - AOL

    www.aol.com/woman-rescues-hundreds-disabled-pups...

    For example, this one woman in Turkey has rescued hundreds of disabled stray dogs who were finally given a second chance at life, all thanks to her. It was over 4 years ago when a woman from ...

  8. 4 Signs Your Almond Milk Has Definitely Gone Bad - AOL

    www.aol.com/4-signs-almond-milk-definitely...

    Almond milk can come in many different forms that can affect the taste, consistency, and shelf life. Homemade almond milk expires the fastest, thanks to the lack of additives, pasteurization, and ...

  9. Quantization (signal processing) - Wikipedia

    en.wikipedia.org/wiki/Quantization_(signal...

    The most common test signals that fulfill this are full amplitude triangle waves and sawtooth waves. For example, a 16-bit ADC has a maximum signal-to-quantization-noise ratio of 6.02 × 16 = 96.3 dB. When the input signal is a full-amplitude sine wave the distribution of the signal is no longer uniform, and the corresponding equation is instead