1. Phasing is also called __________ and its frequency response corresponds to that of a __________ filter.
First blank
A. pitch shifting B. flanging C. feedback D. echo Second blank
A. band-pass B. high-pass C. low-pass D. comb
2. The frequencies "missing" because of phasing are the ________ harmonics, whereas those that are emphasized are the ____________ harmonics.
First blank
A. even B. odd C. partial D. octave Second blank
A. even B. odd C. partial D. octave
3. Feedback of a sound with a delay in the phasing range will result in an apparent pitch being added to it. T or F
4. Phasing is the result of the cancellation of certain frequencies when the time delay between the two signals is equal to _____________ wavelength of that frequency or its odd multiples.
A. one-half
B. one-quarter
C. three-quarters D. one
5. The phasing effect is strongest when the time delay involved is less than _________ ms.
A. 1
B. 5
C. 10 D. 100
E. 150 or more
6. Sound that is sampled and stored in a digital delay unit can be played back with a delay time that can be ____________ periodically, as well as ___________ back into the delay memory.
First blank
A. reverberated B. filtered C. recirculated D. modulated Second blank
A. reverberated B. filtered C. recirculated D. modulated
7. Modulation of the time delays in a delay line at sub-audio rates produces effects such as ________, depending on the speed and depth of the modulation.
A. tremolo
B. pitch changes
C. beating D. sidebands
8. Halving the input and output sampling rate of a digital delay unit in order to double the delay time reduces the ________ of the signal.
A. amplitude
B. frequency
C. signal-to-noise ratio
D. bandwidth
9. As the time delay between two signals being mixed increases, the various effects that are heard, in order, are phasing, echo, and then reverberation. T or F
10. As the time delay between a signal and its delayed version decreases, so do the cancelled frequencies in the output spectrum. T or F
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