COMD 5070 final prep questions with correct answers

COMD 5070 final prepAs sound travels through air, it does so as a - correct answer longitudinal pressure wave The period of a sine wave - correct answer is shorter for higher frequency sounds Pressure can de defined as - correct answer force divided by area Intensity can be defined as - correct answer power per unit area The inverse square law means that - correct answer intensity decreases by a factor equal to the square of the change in distance Based on the equal loudness curves figure (2-18, p33), a 100 Hz tone would need to be approximately how many dB in intensity to sound equally loud to a 1000 Hz tone at 40 dB? - correct answer 53 dB We can typically perceive smaller differences in the pitch of two sounds if they are - correct answer two lower frequencies The human voice as a complex tone is best described as - correct answer nearly periodic A power spectrum is a type of - correct answer frequency domain plot Resonance occurs when - correct answer the applied force is at a frequency that matches the natural frequency of an object which of the following is an analog signal? - correct answer speech sounds in air musical tones in air