ComD 5070 1.3 Test Questions and Answers Verified 100%

X and Y axis of a spectrogram -ANSWER- time, frequency X and Y axis of a spectrum -ANSWER- frequency, amplitude A single vertical line on a line spectrum would represent -ANSWER- a sine wave Multiple vertical lines is a -ANSWER- harmonic series a low pass filter -ANSWER- blocks high frequencies low frequencies are pass through what type of filter? -ANSWER- low pass filter we say that science is parsimonious which means -ANSWER- it uses the simplest explanation possible loudness is best measured by -ANSWER- having a listener make a perceptual judgment when a signal is converted from analog to digital form, the number of 'snapshots' per second is called the -ANSWER- sampling rate a simple, low tech tool for a doctor to view a person's larynx is -ANSWER- a laryngeal mirror in vocal modulation, the frequency changes over time are -ANSWER- slow and rhythmic an electroglottographreveals details of voicing by -ANSWER- passing a current across the vocal folds the best way to avoid aliasing during a recording is to use a -ANSWER- low pass filter as sound travels through air, it does so as a -ANSWER- longitudinal pressure wave the period of a sine wave -ANSWER- is shorter for higher frequency sounds pressure can be defined as -ANSWER- force divided by area intensity -ANSWER- power per unit area the inverse square law means that -ANSWER- intensity decreases by a factor equal to the square of the change in distance we can typically perceive smaller differences in the pitch of two sounds if they are -ANSWER- two lower frequencies the human voice as a complex tone is best described as -ANSWER- nearly periodic a power spectrum is a type of -ANSWER- frequency domain plot