To determine if you remember some of the key concepts of the chapter, take the following self quiz and see how you do. Select the best answer. Should you select an incorrect answer, you'll receive immediate informational feedback to assist you in remembering the correct answer.

1		The sequence of a single compression crest, or high-pressure point, and a rarefaction trench, or low-pressure point, is one complete cycle of sound and is represented by the sine wave.
			A)	True
			B)	False
2		The number of cycles per second is designated as the amplitude of the sound wave.
			A)	True
			B)	False
3		A human being with excellent hearing can hear a range of sound waves from near 20 Hz at the low end of the scale to near 20,000 Hz at the upper end of the scale.
			A)	True
			B)	False
4		The size of the sound wave, measured from the bottom of the trench to the top of the crest, is called amplitude.
			A)	True
			B)	False
5		The difference between the softest sound and the loudest sound created by something is called a decibel.
			A)	True
			B)	False
6		The process of assigning a binary number to each sample or voltage reading taken during the analog-to-digital audio conversion is known as
			A)	A/D.
			B)	quantization.
			C)	sampling.
			D)	anti-aliasing.
7		A sound or audio signal that occurs in between the exact harmonics or multiples of a fundamental frequency is known as
			A)	an even order harmonic.
			B)	the synergetic frequency.
			C)	an overtone.
			D)	an octave.
8		Digital audio technology can be traced back to the development of the
			A)	Nyquist theorem.
			B)	transistor.
			C)	integrated circuit.
			D)	binary number system in the 1700s.
9		The number of bits in each sample word determines the
			A)	dynamic range of an audio signal.
			B)	bandwidth of the audio signals frequency range.
			C)	frequency response of the audio signal.
			D)	proportional ratio of compression.
10		Subjectively, the amplitude of a sine wave represents
			A)	the frequency of the sine wave.
			B)	the loudness or softness of a sound wave.
			C)	the phase of a sine wave.
			D)	the length of the sine wave.
11		One of the interesting qualities of the sub bass and low bass region of sound is that humans
			A)	have a difficult time pinpointing the direction such sounds originate from.
			B)	perceive these sound ranges as very annoying.
			C)	are very sensitive to such sounds and can easily pinpoint their location.
			D)	hear these sounds before they feel them.
12		You can preserve your hearing by listening to your work in the studio at a maximum sound-pressure level of
			A)	95 dB-SPL or lower.
			B)	between 85 and 95 dB-SPL.
			C)	85 dB-SPL or lower.
			D)	90 dB-SPL.
13		The difference in time between two or more sine waves measured in degrees is referred to as
			A)	the frequency differential.
			B)	a velocity paradigm.
			C)	a frequency time shift.
			D)	a phase shift.
14		The number of complete cycles that occur in one second of time is known as a signal's
			A)	frequency.
			B)	overtone.
			C)	primary octave.
			D)	amplitude.
15		One of the first electronic means of communication to use a binary-based system of communications was
			A)	Marconi's radio.
			B)	ENIAC.
			C)	Samuel Morse and his telegraph.
			D)	Alexander Graham Bell's telephone.