Title: HIS 240 Quiz 2.4
Course: 14SU-HIS-240-GH101-COMP & DIGITAL FEATURES OF HI > Section: Dropbox

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">The most important pure tone frequency to understand speech is:<br></span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">2KHz</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">1KHz</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">4KHz</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">6KHz</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">2KHz</span></span>

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Today’s digital hearing instruments can generate their own pure tone sounds.  This ability is often used in their phase cancellation algorithms and their  _____________.<br></span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Expansion algorithm</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Directional microphone algorithm</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Noise reduction algorithm</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">In-situ audiometry algorithm</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">In-situ audiometry algorithm</span></span>

Q: Your patient/client complains that their hearing instruments are not as clear as they used to be, and they continuously “whistle”.  What action would you take FIRST?
- Counsel on how to adjust its volume
- Perform an otoscopic inspection
- Advise patient/client regarding its battery drain
- Send the hearing instruments to the factory for repair
A: Perform an otoscopic inspection

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">The type of compression which does most of its work above the kneepoint is:<br></span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Input compression</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Output compression</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Syllabic compression</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Phonemic compression</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Output compression</span></span>

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Average detection compression for high frequency channels and __________ compression for low frequency channels are often used when creating digital algorithms.<br></span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Phonemic</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Syllabic</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">output</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">input</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Syllabic</span></span>

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Adjustable compression ratios and kneepoint can provide the opportunity to restore _________ to each patient/client.<br></span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Normal hearing </span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Normal loudness</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Normal word recognition</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Normal hair cell function</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Normal loudness</span></span>

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Cerumen would MOST LIKELY affect which of the following digital hearing instrument components?</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Receiver</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Microphone</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Volume control</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Amplifier</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">All of the above</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Receiver</span></span>

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Two basic subsets for wide dynamic range compression (WDRC) hearing instruments is TILL and ______ .<br></span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">FILL</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">KILL</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">SILL</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">BILL</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">BILL</span></span>

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">The compression ratio to the left of the kneepoint on an input/outpt graph is:<br></span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">1:1</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">2:1</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">3:1</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">4:1</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">1:1</span></span>

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">In ANSI test box analysis, the standard input decibel level to determine the hearing instrument gain is:</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Twenty decibels.</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Forty decibels.</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Sixty decibels.</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Ninety decibels.</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Sixty decibels.</span></span>

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">American National Standards Institute creates measurement criteria to:</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Standardize the sale of hearing instruments</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Standardize the development of hearing instruments</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Standardize consistent measurement of hearing instrument performance.</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Standardize consistent measurement of hearing instrument batteries.</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Standardize consistent measurement of hearing instrument performance.</span></span>

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">An almost flat line to the right of the kneepoint on an input/output graph would indicate:<br>  </span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">reduced compression</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">increased compression</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">no compression</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">syllabic compression</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">increased compression</span></span>

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">DSP instruments contain both channels and bands which:</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Divide the frequency response range of the instruments into sections with adjustable amplitude.</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Divide the frequency response range and the channels into sections  where specific algorithms can be applied.</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Have at least one band and one channel to work with.</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">May have twenty channels and more than two-dozen bands.</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">All of the above</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">All of the above</span></span>

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">It is common practice to perform Hearing Instrument testing on your instruments when you receive them from the manufacturer. You can get valid results on analog and /or programmable digital hearing instruments using the same procedure.</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">True, because ANSI standard applies to all hearing instruments.</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">True, because ANSI standards were updated in 1997 to include digital hearing instruments.</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">False, because there are new ANSI standards for testing digital hearing instruments.</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">False, because there is no 100% test for digital hearing instruments.</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">True, because ANSI standard applies to all hearing instruments.</span></span>

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Wide dynamic range compression (WDRC) is always associated with:<br></span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Input compression</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Output compression </span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Syllabic compression</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Phonemic compression</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Input compression</span></span>

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">The MOST important reason to wash your hands before and after each service is:</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">It helps prevent the spread of infectious disease.</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">It is the only protection available for both specialist and patient/client.</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">It is mandated by insurance companies.</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">It is required by state licensure.</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">It is a health department requirement.</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">It helps prevent the spread of infectious disease.</span></span>

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Equivalent input noise is a measurement commonly performed using a:<br></span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Test/analizer box</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Probe microphone equipment</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Sound booth</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Tympanometer</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Test/analizer box</span></span>

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">There are two basic types of compression.  They are input compression and ____________.<br></span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Output compression</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Syllabic compression</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Phonemic compression</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Automatic compression</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Output compression</span></span>

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">A patient/client who works in a noisy environment reports keeping the hearing instrument turned off most of the work day because loud sounds are uncomfortable.<br></span></span><span style="font-family:'Tahoma'"><span style="font-size:12pt">What is the cause of the patient's/client's discomfort?</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">the difference between the MCL and SAT is too large</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">the output is too high</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">the expansion kneepoint is too low</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">the discrete frequency results from the hearing test are too low</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">the output is too high</span></span>

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">When an input compression circuit receives one hundred decibels of input and its compression produces fifty decibels of output. This would be considered a:<br></span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">1.1 compression ratio</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">2. 1 compression ratio</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">3.1 compression ratio</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">4.1 compression ratio</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">2. 1 compression ratio</span></span>

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">The most common user complaint/reason for hearing instrument returns to the manufacturer are:</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Soreness of the ear.</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Unreliable performance.</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Frequencies are too “pitchy”.</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Sounds are too loud.</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Sounds are too loud.</span></span>

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Which electro-acoustically adjustable parameter of a hearing instrument would be used to achieve audibility of sound for the patient/client?</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">The frequency response.</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">The battery.</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">The gain.</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">The output.</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">The gain.</span></span>

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">How many gain levels (which are dependent upon various inputs) are affected with the change of a compression kneepoint?<br></span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">One</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Two</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Three</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Four</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Three</span></span>

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">A high compression kneepoint is often located above:<br></span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Twenty decibels</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Forty decibels</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Sixty decibels</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Eighty decibels</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Sixty decibels</span></span>

Q: A compression ratio of a linear amplifier would be:
- 1:1
- 2:1
- 3:1
- 4:1
A: 1:1

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">There are basically two  characteristics of compression.  They are static and ________ .<br></span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Phonemic</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Syllabic</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Dynamic</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Automatic</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Dynamic</span></span>

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">More dots of the Articulation Index are located in the ____________.<br></span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Phonemic frequencies</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Low frequencies</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">High frequencies</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Syllabic frequencies</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">High frequencies</span></span>

Q: The dynamic aspects of compression are known as the
- compression
- frequency
- attack and release time
- gain
A: attack and release time

Q: The input where the compression begins.
- Distortion
- Amplification
- Ratio
- Kneepoint
A: Kneepoint

Q: Which compression ratio has the most linear sound with little distortion?
- 1:1
- 2:1
- 3:1
- 4:1
A: 1:1

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Each dot of the Articulation Index represents the opportunity for a ______ ability for speech intelligibility.<br></span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Ten percent</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Three percent </span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Two percent</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">One percent</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">One percent</span></span>

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">The “size of the shoe” for your patient/client is determined by the ________ of the prescribed hearing instrument(s):<br></span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Output</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Sound</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Gain</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Frequencies</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Output</span></span>

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Compression ratios may best be applied based upon the patient/client’s revealed:<br></span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Hearing loss</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Residual hearing ability</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Word recognition scores</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">Sound preferences</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Residual hearing ability</span></span>

Q: Static compression characteristics involve:
- attack time
- release time
- distortion
- attack and release times
A: attack and release times

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">According to ANSI standards, which electro-acoustic parameter is the most important when selecting amplification for a patient/client with a mild-moderate, sensorineural hearing loss, with MCL of 60 dB and LDL of 95dB?</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">high-frequency average</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">output sound pressure level</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">automatic gain control</span></span>
- <span style="font-family:'Tahoma'"><span style="font-size:12pt">input sound pressure level</span></span>
A: <span style="font-family:'Tahoma'"><span style="font-size:12pt">output sound pressure level</span></span>

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Only one type of compression strategy may be used within digital hearing instrument algorithms.<br><br>a. True<br>b. False</span></span>
- True
- False
A: False

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">TILL processing is characterized by having low kneepoints for high frequency inputs.<br><br>a. True<br>b. False</span></span>
- True
- False
A: True

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">There are no ANSI standards for the measurement of directional microphones in hearing instruments.<br><br>a. True<br>b. False</span></span>
- True
- False
A: True

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Modifying a compression strategy </span></span><span style="font-size:12pt"><span style="font-family:'Tahoma'"><u>spectrally</u> would directly involve the input frequencies to the hearing instrument.<br><br>a. True<br>b. False</span></span>
- True
- False
A: True

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Input compression is most often used with mild to moderate hearing loss; and severe to profound hearing loss most often has output compression applied.<br><br>a. True<br>b. False</span></span>
- True
- False
A: True

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Fast attack times are considered to be 10msec or less.<br><br>a. True<br>b. False</span></span>
- True
- False
A: True

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Today, most digital hearing instruments process loud inputs with input compression and soft inputs with output compression.<br><br>a. True<br>b. False</span></span>
- True
- False
A: False

Q: <span style="font-family:'Tahoma'"><span style="font-size:12pt">Short attack and release times with high compression ratios will produce the greatest opportunity for distortion of the compession output.<br><br>a. True<br>b. False</span></span>
- True
- False
A: True