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COMD 5070 Week 1 Exam/67 Questions with Complete Solutions
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COMD 5070 Week 1 Exam/67Questions with Complete Solutions
acoustics - -A branch of physics devoted to the study of sound: its
production, transmission, and effects.
-dynamics - -The study of the forces that result in the movement of objects.
-kinematics - -The study of motion, the positions, velocities, and
acceleration of body parts. _________ is concerned with movements without
regard to the forces that cause the movements.
-psychoacoustics - -An interdisciplinary field of psychology and acoustics
that addresses the relationship between the physical properties of a
phenomenon and our perception of these properties.
-speech production - -The generation of airflow and the creation of air
pressures by the displacement of bodily structures which, taken together,
cause the disturbances of air that constitute phonemes, the smallest
meaningful units of sound.
-speech science - -The study of the acoustics, aerodynamics, and
physiology of the production, transmission, and effects of speech. When used
in the general sense, ___________ includes voice science.
-voice science - -The study of the acoustics, aerodynamics, and physiology
of voice production, with specific focus upon laryngeal dynamics and vocal
tract interaction.
-acoustic resonator - -A partially or completely enclosed container, in which
the air inside is set into vibration.
-amplitude - -The magnitude of oscillation.
-antinode - -The area of the largest amplitude of vibration of a sound wave.
-aperiodic - -Irregular sound wave, having no definite pattern of repeating
cycles.
-boundary - -The interface between two mediums, such as the vocal tract
and the surrounding air.
-complex sound - -A sound wave consisting of two or more pure sounds.
, -compression - -The collisions of air molecules result in regions of increase
density called ________. _________ are regions of high air pressure.
-constructive interference - -An area of rarefaction of a wave meets the
area of rarefaction of another wave, the net effect of which is to amplify the
rarefaction. Or an area of compression of a wave meets the area of
compression of another wave, the net effect of which is to amplify the
compression.
-continuous spectrum - -A spectrum that contains energy at all frequencies.
-decibel scale - -A logarithmic scaled used to measure intensity.
-destructive interference - -A wave interferes with another wave such that a
compression of one wave meets a rarefaction of the other wave, and the net
effect is to decrease the overall energy.
-diffraction - -The sound wave bends around an obstacle without going
through the boundary.
-displacement force - -Force that causes a mass to be moved away from
equilibrium.
-elasticity - -The ability of an object to spring back to its resting shape when
deforming forces are removed.
-envelope (spectral envelope) - -The contour formed by the display of
energy at each frequency represented in a sound wave.
-equilibrium - -A state in which opposing dynamic forces balance each
other.
-forced vibration - -A medium is driven into vibration by an outside source
that itself is an oscillator.
-fourier analysis - -A complex mathematical process of decomposing a
complex wave into its separate sine waves. A method to transfer the time-
series speech waveform into a frequency-based spectrum.
-free vibration - -Occurs when an object or medium is allowed to vibrate
freely after an initial disturbance.
-frequency - -The rate at which particles vibrate back and forth per second.
-fundamental frequency (F0) - -The repetition frequency of a sine wave or a
complex pattern.
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