Basic Principles of Otometry |
Contents
Foreword vii | 3 |
ACTUAL SOUND PRESSURE MEASUREMENTS | 187 |
BASIC ELECTRICAL PRINCIPLES AND HEARING INSTRUMENTS | 201 |
Copyright | |
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Common terms and phrases
1000 FREQUENCY acoustic amplifier audiogram audiometer average basilar membrane calibration chart circuit circumaural earphones comfortable loudness pressures coupler CYCLES PER SECOND damped wavetrain signal dB/octave decibels per octave deficient ear delivered diaphragm direct current distortion ear canal ear drum earmold electrical equal loudness graphs equal loudness pressures exist free-field sound pressure FREQUENCY 2000 frequency response gain hearing deficiency hearing instru hearing instrument hearing loss indicate input pressure listener loudness sensation maximum deliverable pressure maximum tolerable pressure ment microbars microphone MILLISECONDS MILLISECONDS nerve normal ear obtained otometric otometric measurements output pinna prescription PRESSURE IN DECIBELS pressure limitation produce prosthetic pure tone signals quency ratio real pressures receiver relative represents shown in Figure shows sound pres sound pressure changes sound pressure cycles sound pressure level sound pressure signal specified speech sounds square wave stereophonic strument sure threshold pressures tion transistors usually zero