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Smart Directional Design

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1.  Which of the following angles is expected to provide optimal directionality? 90° 75° 45° 10°

2.  Which of the following best describes a hearing aid housing design to optimize directional microphone placement with the horizontal plane? Completely in the canal design Inverted “L” shaped RIC device A housing design shaped like a comma “I” shaped hearing aid with microphones placed at the top and bottom

3.  Which of the following should be considered with clinical fitting of hearing aids with directional microphones? Directional microphones should be positioned at a 45° relative to the horizontal plane Directional microphones should be positioned at a 90° relative to the horizontal plane Directional microphones should be positioned at a 0° relative to the horizontal plane Directional microphones should be positioned discreetly against the helix.

4.  Which of the following statements best describes the anticipated difference in directional performance between horizontally positioned and steeply sloping directional microphone angles? The more horizontal angles can provide improved directional performance over steeply sloping angles. The more steeply sloping angles can provide improved directional performance over more horizontal angles. Directional performance between horizontal and steeply sloping angles is proven to be equivalent. Steeply sloping angles provide better amplification of target signals from the rear facing azimuth.

5.  Which of the following statements best describes the anticipated outcome of horizontally positioned directional microphone angles? Improved intelligibility for speech from the rear hemisphere in the presence of background noise. Improved intelligibility for speech from the right side in the presence of background noise. Improved intelligibility for speech from the left side in the presence of background noise. Improved intelligibility for speech from the front hemisphere in the presence of background noise.