COMD 5070 Rosen and Howell quiz 1
a table of numbers could fully represent - correct answer-a digital signal
aliasing during digital recording means that - correct answer-a sinusoid is transformed into a
different frequency
an 8- bit A/D system has how many quantization levels? - correct answer-256
an analog signal - correct answer-is continuous in amplitude
is continuous in time
anti-aliasing filtering - correct answer-removes frequency components above the Nyquist
frequency
he sampling theorem indicates - correct answer-the minimum sample rate needed to
perfectly reconstruct a signal
low-pass filtering during DAC playback - correct answer-is mandatory to eliminate the 'steps'
in the analog waveform
quantization refers to - correct answer-the assignment of an analog value to the nearest
digital value available
which of the following is an analog signal? - correct answer-speech sounds in air
musical tones in air
displacement of the middle ear bones
all of the above
you cannot listen to digital sound via digital headphones - correct answer-because the sound
is really generated by analog loudspeakers
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