Hearing Threshold Articles & Analysis: Older
2 articles found
The international standard IEC 60318-4 specifies an occluded ear simulator, often referred to as a 711-coupler, for testing headphones, earphones, hearing protectors, hearing aids etc. The standard specifies a specific microphone type which limits the dynamic range of the coupler both in the low range and in the high. To overcome these limitations, G.R.A.S. has ...
If you play white noise to a group of people and tell them that the song “White Christmas” is hidden in the sound, about 30% of them will be convinced that they can hear it. The human mind is always looking for patterns – even when they aren’t there. This propensity explains a significant proportion of complaints where noise levels are actually very low ...