COMD 5070 Week 1 Questions and Answers(A+
Graded)
acoustics - ANSWER-A branch of physics devoted to the study of sound: its production,
transmission, and effects.
dynamics - ANSWER-The study of the forces that result in the movement of objects.
kinematics - ANSWER-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 - ANSWER-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 - ANSWER-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 - ANSWER-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 - ANSWER-The study of the acoustics, aerodynamics, and physiology of
voice production, with specific focus upon laryngeal dynamics and vocal tract
interaction.
acoustic resonator - ANSWER-A partially or completely enclosed container, in which the
air inside is set into vibration.
amplitude - ANSWER-The magnitude of oscillation.
antinode - ANSWER-The area of the largest amplitude of vibration of a sound wave.
aperiodic - ANSWER-Irregular sound wave, having no definite pattern of repeating
cycles.
boundary - ANSWER-The interface between two mediums, such as the vocal tract and
the surrounding air.
complex sound - ANSWER-A sound wave consisting of two or more pure sounds.
, compression - ANSWER-The collisions of air molecules result in regions of increase
density called ________. _________ are regions of high air pressure.
constructive interference - ANSWER-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 - ANSWER-A spectrum that contains energy at all frequencies.
decibel scale - ANSWER-A logarithmic scaled used to measure intensity.
destructive interference - ANSWER-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 - ANSWER-The sound wave bends around an obstacle without going through
the boundary.
displacement force - ANSWER-Force that causes a mass to be moved away from
equilibrium.
elasticity - ANSWER-The ability of an object to spring back to its resting shape when
deforming forces are removed.
envelope (spectral envelope) - ANSWER-The contour formed by the display of energy
at each frequency represented in a sound wave.
equilibrium - ANSWER-A state in which opposing dynamic forces balance each other.
forced vibration - ANSWER-A medium is driven into vibration by an outside source that
itself is an oscillator.
fourier analysis - ANSWER-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 - ANSWER-Occurs when an object or medium is allowed to vibrate freely
after an initial disturbance.
frequency - ANSWER-The rate at which particles vibrate back and forth per second.
fundamental frequency (F0) - ANSWER-The repetition frequency of a sine wave or a
complex pattern.
harmonic - ANSWER-An integer multiple of the fundamental.
Graded)
acoustics - ANSWER-A branch of physics devoted to the study of sound: its production,
transmission, and effects.
dynamics - ANSWER-The study of the forces that result in the movement of objects.
kinematics - ANSWER-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 - ANSWER-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 - ANSWER-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 - ANSWER-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 - ANSWER-The study of the acoustics, aerodynamics, and physiology of
voice production, with specific focus upon laryngeal dynamics and vocal tract
interaction.
acoustic resonator - ANSWER-A partially or completely enclosed container, in which the
air inside is set into vibration.
amplitude - ANSWER-The magnitude of oscillation.
antinode - ANSWER-The area of the largest amplitude of vibration of a sound wave.
aperiodic - ANSWER-Irregular sound wave, having no definite pattern of repeating
cycles.
boundary - ANSWER-The interface between two mediums, such as the vocal tract and
the surrounding air.
complex sound - ANSWER-A sound wave consisting of two or more pure sounds.
, compression - ANSWER-The collisions of air molecules result in regions of increase
density called ________. _________ are regions of high air pressure.
constructive interference - ANSWER-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 - ANSWER-A spectrum that contains energy at all frequencies.
decibel scale - ANSWER-A logarithmic scaled used to measure intensity.
destructive interference - ANSWER-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 - ANSWER-The sound wave bends around an obstacle without going through
the boundary.
displacement force - ANSWER-Force that causes a mass to be moved away from
equilibrium.
elasticity - ANSWER-The ability of an object to spring back to its resting shape when
deforming forces are removed.
envelope (spectral envelope) - ANSWER-The contour formed by the display of energy
at each frequency represented in a sound wave.
equilibrium - ANSWER-A state in which opposing dynamic forces balance each other.
forced vibration - ANSWER-A medium is driven into vibration by an outside source that
itself is an oscillator.
fourier analysis - ANSWER-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 - ANSWER-Occurs when an object or medium is allowed to vibrate freely
after an initial disturbance.
frequency - ANSWER-The rate at which particles vibrate back and forth per second.
fundamental frequency (F0) - ANSWER-The repetition frequency of a sine wave or a
complex pattern.
harmonic - ANSWER-An integer multiple of the fundamental.
