OK, let's see the
correct answers.
OK, let's see the
correct answers.
CD202, R. Lutfi Exam III. Psychological Acoustics 1.) Magnitude estimation is an example of a. a sensory capability b. a scale of sensation c. a psychophysical procedure used by Stevens as a direct measure of sensation d. a means of calibrating the physical intensity of a sound 2.) Weber's Law tends not to hold a. near the extreme values of the stimulus range b. for just-noticeable differences at any value of a stimulus c. for a 1 dB difference in sensory magnitude d. none of the above 3.) In the theory of signal detection the function relating percent correct to signal-to-noise ratio is a. a psychometric function b. an ROC curve c. d prime d. none of the above 4.) The range of signal frequencies for which the human ear is most sensitive is approximately a. 100 to 500 Hz b. 500 to 1000 Hz c. 1000 to 4000 Hz d. 4000 to 10000 Hz 5.) Which of the following is not likely to change the value of d'? a. changing the cost associated with making a false alarm b. increasing the signal-to-noise ratio c. decreasing sensitivity through noise exposure d. all of the above 6.) Which of the following dichotic conditions produces the largest binaural masking- level difference? a. Same signal and noise waveform to each ear b. Signal to one ear, same noise waveform to both ears c. Same noise to both ears, signal 180 degrees out of phase between ears d. Same signal and noise waveform to one ear 7.) The critical band refers to a. the total range of frequencies that the human ear can detect b. the smallest change in the bandwidth of a signal that can be detected c. the range of frequencies for which the human ear is most sensitive d. none of the above 8.) The minimal audible angle refers to a. the smallest azimuth angle for which a sound is first detected b. the smallest elevation angle for which a sound is first detected c. the smallest noticeable change in the azimuth angle of a sound source d. none of the above 9.) Which measure of frequency selectivity represents a single level of masking? a. the auditory masking pattern b. the auditory filter shape c. the psychophysical tuning curve d. none of the above 10.) According to the auditory model of masking the combination of two equally effective maskers should a. produce intermodualtion distortion products b. produce beats c. produce twice the amount of masking of either masker alone d. produce more than twice the amount of masking of either masker alone 11.) What is the smallest change in the intensity of a sound we can detect? a. about a 10 dB change for every 10 dB increase in the level of the sound b. a little more or less than 1 dB depending on the intensity of the sound c. depends entirely on the frequency of the sound d. none of the above 12.) A tone complex comprised of the frequencies 300,400,500, and 600 Hz will have a pitch corresponding to a. 50 Hz b. 100 Hz c. 200 Hz d. 300 Hz
