Category: Test Environment

Hearing Aid Verification Using Functional Gain – Part II

Wayne Staab 1 Comment AGC / Anechoic environment / Compression / Compression / Decibel / Deep Fit / Directional Microphone / Feedback / Free Field / Functional Gain / Hearing Testing / HINT / Insertion Gain / Knee / Linear amplification / Mic Probe / QuickSIN / Real-Ear / Sound Field / Sound Pressure Level (SPL) / SRT / Test Environment / Threshold Knee Control / Warble Tone / Word Recognition

Note:  This is a continuation of a previous blog: Hearing Aid Verification Using Functional Gain – Part I, which was last week’s blog.   Functional Gain in Hearing Aids   Functional Gain (FG) = Aided Threshold minus the Unaided Threshold (FG = A-U). Unaided thresholds are measured to tones presented through the loudspeaker(s). Various frequencies…

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When High Noise Levels are NOT the Issue (Part II)

Wayne Staab Leave a comment Aircraft / Audiology / Cockpit sleds / Decibel / Ejection seats / Escape capsules / F15 / Hearing loss / HHTF / Hurricane Mesa Test Track / KEMAR Mannequin / Loud Noise / Pilot / Pilot survival / Pusher boosters / Rocket motors / Solid propellant rockets / Test Environment / US Air Force

This is a continuation of the previous blog with the same name, but labeled Part I. The setting is the Hurricane Mesa Test Facility (HMTF) located atop Hurricane Mesa, a short drive from St. George, UT. HMTF has a 12,000 ft. test track that is fully capable of handling propulsion velocities exceeding supersonic. It is…

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