Shs 311 - Study guides, Class notes & Summaries

SHS 311 Final Exam Questions and Answers 100% Correct What is loudness recruitment? - Answer- -Phenomenon that happens to non-hearing listeners, low intensity level -Caused by loss of outer hair cells For a person with hearing loss, low intensity sounds are () to detect while high intensity sounds are () - Answer- more difficult just as loud as for a person with normal hearing What are the two neural mechanisms that may be used to determine the pitch of a pure tone? In what frequency...

SHS 311 EXAM QUESTIONS WITH 100% CORRECT ANSWERS What are the three types of temporal masking? - Answer- 1. Simultaneous masking 2. Forward masking 3. Backward masking What is simultaneous masking? - Answer- Noise and masker overlap at the same time Ex. Having a conversation with someone in a room (convo of about 65 dB) and hearing a radio in the room as loud as a concert (about 120 dB) - You no longer can hear the other person talking because you are completely masked out What is f...

SHS 311 Test 1 Questions and Answers 2024 with Complete Solution How is the length of a string or a tube related to the fundamental frequency of a standing wave? - Answer- The fundamental frequency of a standing wave is inversely related to the length (L) of the string or tube How can a complex sound be created using simple sine waves? - Answer- By adding simple sine waves together What are the frequency domain amplitude and phase spectrum? - Answer- Time domain: time pressure, wave form ...

SHS 311 EXAM 2A QUESTIONS WITH ALL CORRECT ANSWERS What does the Auditory nerve do? - Answer- Transmits neural code for sound to the brainstem What does the inner ear do? - Answer- Transduction of sound vibration into the neural code What is the outer (external) ear do? - Answer- -directs sound to the middle ear -amplifies sound in frequency, depends on specific manna on location pf sound source What does the middle ear do? - Answer- -it matches the impedance diff. b/t air and fluids/...

SHS 311 Exam 2024 Questions with Complete Solutions What are the basic characteristics of an auditory nerve fiber tuning curve? - Answer- -tuning curve has a steep high frequency roll off -shallow frequency tail -the lowest sound level required=the frequency at the trough is the CF What is and how is a PST histogram measured? - Answer- -post-stimulus time histogram is the distribution of neural response over time -record the neural spike chain for the same input sound and same auditory...

SHS 311 FINAL EXAM QUESTIONS AND REVISED ANSWERS (ALL ARE CORRECT) 2024 LATEST UPDATE What is the frequency of a standing wave proportional to? - Answer- Length of string What are two graphs used to describe a sound in the Frequency Domain? - Answer- Phase spectrum and amplitude spectrum When phase difference changes, what else changes? - Answer- Both the time domain and frequency domain descriptions will change What is a high-pass filter? - Answer- the amplitude of sinusoidal compone...

SHS 311 TEST QUESTIONS AND ANSWERS ALL CORRECT A cat can detect 1000 times more sound power at 30,000 Hz than a human. How many dB this increase? - Answer- 30 dB Sally requires 10 times more sound pressure to detect a 1000-Hz tone than Mary. How many dB less sensitive is Sally? - Answer- 20 dB Many animals can detect an intensity that is 4 times more than the minimum sound intensity. How many dB in this? - Answer- 6.02 dB When the distance from the source is increased from 2 m to 4m b...

SHS 311 Exam 2B Questions with All Correct Answers What is spontaneous activity? - Answer- It is activity that occurs without external stimuli. On a graph it is the y-axis when there is no sound input What is the threshold of a neuron? - Answer- Threshold potential is about -55mV Shown on the x-axis on a graph What effect does the MOC activation have on the rate-level function of an auditory nerve? - Answer- It causes the response rate to be low How is a tuning curve obtained from r...

SHS 311 TEST QUESTIONS WITH 100% CORRECT ANSWERS The measured pressure is 632, 451 µPa. Convert to dB SPL. - Answer- 90 dB SPL The measured sound power level is 6.30 x 10-6 w/m2. Convert to dB IL. - Answer- 68 dB IL The measured sound power level increased from 4 x 10-5 w/m2 to 8 x 10-5 w/m2. What is the increase in dB IL? - Answer- 3 The frequency of a sine wave is 2500 Hz. What is the period? - Answer- 0.4 msec The wavelength of a 1500 Hz sine wave is 2 feet. What is the speed...