Hearing Science
What is a period
What is the time it takes to complete 1 full cycle; calculated as 1 / Frequency.
How prevalent is hearing Loss?
What is approximately 30 million Americans report hearing loss, with nearly 95% potentially benefiting from amplification.
What is promontory?
What is curved eminence covering the basal turn of the cochlea.
Higher vs. Lower Admittance
What is higher admittance means greater movement and transmitted energy; lower means less movement and reflected energy.
What is the purpose of tympanometric width (TW)?
What is To measure the sharpness of the tympanometric peak and assess middle-ear pathology.
What is frequency?
What is the number of cycles per second; calculated as 1 / Period
What is the hearing aid utilization rate?
Only 20 to 25 percent of individuals with hearing loss currently use hearing aids.
What are the parts malleus?
What is consists of manubrium, neck, head, and lateral and anterior processes.
What are the Four Components of Tympanometry Instrumentation
What is a probe system, air pump, processor, and reflex activator.
What does Ytm stand for in tympanometry?
What is peak-compensated static acoustic admittance
Wavelength Formula
What is Speed of Sound divided by Frequency (Speed of Sound / Frequency).
What is the speech transmission index (STI)
What is an objective measure ranging from 0.0 to 1.0 indicating speech transmission quality.
External Auditory Canal Structure
What is outer 1/3 is cartilage; inner 2/3 is formed by the temporal bone.
What are the Four Steps to Read a Tympanogram
What is 1. Validity, 2. Peak location, 3. Peak height, 4. Ear-canal volume.
What does TPP stand for?
What is Tympanometric Peak Pressure
What is a phase?
What is the portion of a cycle elapsed at any moment, expressed in degrees (360° for one full cycle).
What is the Speech Intelligibility Index (SII)?
The current ANSI standard using audibility and frequency weighting to estimate speech access.
Canal Resonant Peak
What is the external auditory canal has a resonant peak at approximately 2.5 kHz.
Probe Ear vs. Stimulus Ear
What is Probe ear receives the probe; stimulus ear receives the reflex-activating signal.
How does ear canal volume affect static admittance measurements?
What is Static admittance can be affected by the choice of pressure value for compensation.
What is a cycle?
Motion from equilibrium to max displacement, through equilibrium, to max displacement in the opposite direction, and back to equilibrium.
What is AI (not that type of AI)?
What is Audibility Index, quantify importance-weighted speech audibility
What are the dimensions of the ear canal?
What is the average length is about 3.5 cm with a diameter of 7 to 9 mm.
What may cause static admittance to increase?
What is conditions that decrease stiffness, like TM atrophy or ossicular disarticulation, can lead to increased static admittance.
What is the significance of tympanometric gradient?
What is It measures the steepness of the slopes on either side of the tympanometric peak and indicates sharpness.