COMD 5070- Exam 1- Quiz (cont. from week 1) updated already passed

COMD 5070- Exam 1- Quiz (cont. from week 1)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 An analog signal (e.g. from a microphone)... - correct answer -is continuous in AMPLITUDE -is continuous in TIME A table full of numbers could fully represent.... - correct answer A digital sound You cannot listen to digital sound via digital headphones.... - correct answer Because the sound is really generated by analog loudspeakers. Quantization refers to: - correct answer The assignment of an analog value to the nearest digital value available. An 8-bit A/D system has how many quantization levels? - correct answer 256 The sampling theorem indicates : - correct answer The minimum sample rate needed to perfectly reconstruct a signal. Aliasing during digital recording means that.... - correct answer A sinusoid is transformed into a different frequency.