Mead C. Killion

TL;DR: This paper describes a shortened and improved version of the Speech in Noise (SIN) Test, which measures the SNR a listener requires to understand 50% of key words in sentences in a background of babble.

TL;DR: In this article, a hearing aid apparatus is disclosed that employs both an omnidirectional microphone and at least one directional microphone of at least the first order, and the electrical signals output from the directional microphone are supplied to an equalization amplifier which at least partially equalizes the amplitude of low frequency electrical signal components of the electrical signal with the amplitude amplitude of the mid and high frequency electrical signals components of electrical signals of the directional microphones.

TL;DR: Improved analog circuit model of the external and middle ear has been developed that produces results equivalent to those found in the temporal bones that support previous studies that indicate that in addition to a roll-off in tympanic membrane function above 1000 Hz, there is slippage in the ossicular lever system that causes an increasing "lever ratio" above 1000Hz.

TL;DR: Mean hearing threshold levels (HTLs) for 59 musicians were better than those for an unscreened nonindustral noise-exposed population (NINEP), and only slightly worse than the 0.50 fractile data for the ISO 7029 (1984) screened presbycusis population.

TL;DR: In this paper, a subminiature power amplifier for hearing aids configured to be completely self-contained and fit within the user's ear features a Class D amplifier stage and a single resistance element.