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References in periodicals archive ?
The use of the [l.sup.1]-norm (as in (9)) has attracted attention in the past decades [15-20] due to a number of advantages, including superior performance with impulse noise in scenarios ranging from detection to variational models.
Studies with NAC and acetyl-L-carnitine in combination demonstrate less hair cell loss, lower oxidant levels, and reduced temporary and permanent hearing loss in animals exposed to loud impulse noise. (46), (47) The effect is so strong that the combination is still effective if used 1-4 hours after the noise exposure.
Of course, mentioned features don't characterize all possible impulse noise signals.
Most of impulse noise removal algorithms are variations of median filtering.
Due to the relatively high values of the peak sound pressure level and the rapidly changing nature of impulse noise, the authors could not use the subjective real-ear attenuation at threshold (REAT) test method [3-5] to assess the effectiveness of noise reduction by hearing protectors for impulse noise [6].
proposed the fuzzy impulse noise detection and reduction method (FIDRM), which uses fuzzy gradient values to determine whether a particular pixel is IN-corrupted [12].
The result shows that the drusen has not been removed, but the small impulse noise has been removed.
As reviewed above, to study the noise-induced hearing loss in the animal model, the researchers used various approaches such as different animal species, sound intensity, frequency spectrum, and continuous or impulse noise. This sometime creates a conflict among the results of some drug studies that have found to be otoprotective by one group while reported as ineffective by the other group.
"Once there is high impulse noise, the hearing protection automatically triggers to reduce hearing damage," said Jimenez.
C weight curve dBC is used in the measurement and evaluation of impulse noise [1-5].
These protective devices including ear muffs and ear plugs attenuate the impulse noise reaching the middle and inner ears.