COMD 5070 Rosen and Howell quiz 1 with answers

COMD 5070 Rosen and Howell quiz 1which 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 - correct answer is continuous in amplitude is continuous in time a table of numbers could fully represent - correct answer a digital signal 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 he 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 anti-aliasing filtering - correct answer removes frequency components above the Nyquist frequency