Final Test 1

Indicate the medium or mediums through which sound CANNOT travel:

How do sound waves travel:

The branch of physics that deals with sound is:

The speed of sound waves in air at sea level is:

The number of times a vibrating body completes a pattern of compressions and rarefactions per second is the:

What do we call a sound that consists of only one frequency:

What is the interval between two frequencies called when the higher frequency is double the lower frequency:

The lowest frequency that makes up most complex sounds is:

A graphic representation of the relative strengths of the harmonics of a complex tone is called a:

The decibel:

The tympanic membrane receives acoustic energy in the form of sound waves and changes it to:

The sound of an approaching train can be heard through the rail before it can be heard through the air because:

During rarefaction the molecules are:

A formant is:

Where are the low frequencies analyzed in the cochlea:

The organ of Corti is located in the:

The most popular theory of hearing is:

In a mixed hearing loss:

A hearing aid:

Noises in the head such as roaring, hissing, buzzing, ringing, etc., are:

The outer rim of he auricle is the:

What type of accessory or modification for a basic hearing aid might assist the wearer in attending to a speaker in a noisy environment:

Why can body aids provide more amplification than behind the ear aids:

What is the IMPORTANT difference between water waves and sound waves?

The eustachian tube can be opened by:

The normal condition of the eustachian tube is:

Fourier spectral analysis shows a complex waveform as:

The manubrium is part of the:

Any complex sound can be broken down into individual frequencies by a technique known as:

How many octaves are there between 128 Hz and 2048 Hz?

The speed of sound, in feet per second at sea level is:

If the fundamental frequency is 400 Hz the next harmonic would be:

What does the term 67 dB mean?

The decibel:

At what effective sound pressure, for normal ears, does sound become painful?

Occurs in a spherical direction:

The weakest sound which the best human ears can hear in the most sensitive frequency range of the ear is at an effective sound pressure of about:

The normal human ear is most sensitive in the approximate range of:

I=P to the second power is:

The inner ear (cochlea) performs a type of analysis on sounds entering the auditory system as it separates them into individual frequencies which acts like:

Theoretically, the increase in sound pressure provided by the middle ear structure is about:

The footplate of the stapes fits into the:

If you raise your voice in the presence of noise you have an example of:

The main purpose of the semi-circular canals are to:

The annular ligament:

The annulus is the:

The diameter of the external auditory canal is about that of a:

The dividing line between the external ear and the middle ear is the:

The tympanic cavity contains the:

The auditory meatus is an irregular tube that varies in length from approximately:

When examining the ear with an otoscope, one of the main things to look for is the color of the eardrum which should be:

The measurement across the base of the human cochlea is about:

The length of the human cochlea from base to apex is about:

The total number of neural fibers or neurons in the human auditory system nerve is about:

In a cross section of the cochlea the number of rows of hair cells that can be seen is:

The basilar membrane separates:

The scala tympani is filled with:

The scala media has what kind of fluid:

The nerve fibers of the hearing nerve, at the point of maximal stimulation of the basilar membrane, will discharge (i.e. discharge and recover) at the rate of:

The apparent fact that the cochlea acts as a frequency analyzer, by distributing various acoustic stimuli to places along the basilar membrane according to frequency, forms the basis of the well known hypothesis called the:

The Place Theory uses:

Which of the following is a result of neural tissue and structural damage?

With a Type A tympanogram you will more than likely have which hearing loss:

A head injury can cause:

Tympanosclerosis would be:

Endolymphatic hydrops is:

Central deafness may be caused by:

Atresia is a term used in referring to:

A cholesteatoma:

Perforation of the eardrum can be caused:

Otosclerosis:

A sensorineural hearing loss is due to a disorder in the:

Symptom(s) of recruitment include:

Malingering is a category of:

Meniere’s syndrome consists of:

An organic disorder is where there is damage to:

A person with a nonorganic hearing loss may:

A person who purposefully pretends to have a hearing loss but knows that there is really nothing wrong with their hearing is:

In pure tone testing, threshold means:

ANSI means:

The audiometer is designed so that zero on the attenuator dial represents the:

Before any testing is done:

The descending technique in pure tone audiometry is preferred because it:

It is best to begin testing 1,000 Hz tone because it:

The air conduction testing should incorporate masking when there is a difference between the air conducted threshold for the test ear and the bone conducted threshold of the non-test ear of:

The symbols used in the audiogram for air conduction are:

The symbols used in the audiogram for bone conduction are:

In bone conduction testing, the vibrator should be:

Sounds from the vibrator may stimulate the non-test ear at:

If a person has a TD of 90 dB, MCL of 70 dB and an SRT of 45 dB his DR would be:

An advantage of recorded voice testing is:

The aid is set at the reference test gain position. You have an input of 60 dB SPL from 200- 5000 Hz and you express the difference between input and output as a curve. What have you measured:

A person complains of a plugged up feeling from his/her earmold. what can you do to help:

Joe’s ear has a sharply sloping high frequency hearing loss. What acoustical modification may prove helpful:

Betty complains of tolerance problems with her hearing aid. What acoustical modification can you make that may be helpful:

The mastoid bone can be said to be the:

The ratio 1,000,000:1 equals

A wavelength of 1.1 feet would be:

When you have two inputs and only hear one combined it is called:

If you were to take sound pressure and doubled it the net increase would be:

If you have irregular frequencies and intensities you have:

If the 8th harmonic is 3200 Hz what is the fundamental frequency:

If you reached 92 dB you have:

If you reached 92 dB you have:

An operation for otosclerosis that was invented in about 1940 that created a new window in the wall of the labyrinth is known as:

The operation that is used now for otosclerosis is:

Incision of the eardrum is:

The surgical technique used for the removal of the eardrum, malleus and incus to treat chronic suppurative otitis media. This is a life saving technique:

Occurs more often in white women:

Which of the following will block the low frequencies and pass the high frequencies:

The adding of an impurity to a semi-conductor is:

A semi-conductor is which of the following:

The work of a transistor is to:

The work of a transducer is to:

IF you would put your hand over your ear how much increase in amplification would you have:

Which is true about the BiCROS:

Rough surface to support the negatively charged foil would be talking about:

What would have the smallest amount of effect on the frequency response:

Using separate transistors, resistors, and conductors in a hearing aid circuit design would be:

Which battery type has the longest life and drops voltage rapidly only after the cell is about used up:

Which battery type is the most commonly used after 1984?

When you have a 45 degree line showing constant gain to the input a 1:1 ratio you have:

Which of the following is true:

If a hearing aid has a input of 70 dB with a gain of 40 dB, the output would be:

If the primary peak response curve is 130 dB and the input is 68 dB what is the peak gain of the hearing aid:

If the primary peak of the hearing is at 3 KHz with a dB level at 125 with a gain of 55 dB the gain of the input would have to be:

What type of output limiting acts more directly on the SSPL:

The Hearing Aid Industry Conference (HAIC) was:

Using the following data: SSPL-90 – 107.2 dB HFA SSPL-90 – 102.7 dB
Peak gain – 45.8 dB
HFA gain – 38.4 dB
If you have a input of 80 dB would would be the SSPL-90 output:

Using the following data: SSPL-90 – 107.2 dB HFA SSPL-90 – 102.7 dB
Peak gain – 45.8 dB
HFA gain – 38.4 dB
If you have a input of 75 dB what would be the HFA SSPL-90 of the hearing aid:

Using the following data: SSPL-90 – 107.2 dB HFA SSPL-90 – 102.7 dB
Peak gain – 45.8 dB
HFA gain – 38.4 dB
If you have a output of 102.7 HFA SSPL-90 what would most likely be the gain of the hearing aid:

What would cause acoustic feedback:

If a open canal coupling is utilized you may:

UCL can also mean:

The type of mold that can have a metal snap ring to hold the receiver in place is called:

The most common mold used today is the:

If it was needed to have low frequencies you could:

The most important speech check to find the SSPL is the:

The binaural effect or loudness summation is equal to:

The binaural effect or loudness summation is equal to:

Equal loudness contours is made from:

Phonemic regression would be:

Stress and tension may cause this type of hearing loss:

Neomycin may cause this type of hearing loss because of ototoxicity:

a 0 to 5 dB shift of threshold during masking more than likely will happen because:

The greater conductive loss will show up during this test:

The best type of masking for pure tone air is:

The best type of masking for speech testing is:

The PTA should be:

Otosclerosis will give you:

Congenital loss will give you what configuration of audiogram:

Upward spread of masking would refer to:

The longer the length of a wire you will have:

What are the two types of transducers in a hearing aid:

Current equals voltage divided by resistance is:

When we talk about a hearing aid going from linearity into compression we have reached the hearing aid’s: