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COMD 5070 FINAL EXAM
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COMD 5070 FINAL EXAM
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COMD 5070 FINAL EXAMNeither invariant nor linear - answer- The speech signal is
Perceptual normalization - answer- When a listener simplifies the processing of the
speech signal to smooth out superfluous variability, it is called
Categorical perception - answer- One type of quantal perception that occurs as we
listen to speech is called
Syllable components are presented separately, but simultaneously, to each ear -
answer- In duplex perception:
The place and/or manner of articulation is perceived to change - answer- In the mcgurk
effect:
Using contextual, linguistic, and cognitive cues - answer- Top-down processing in the
perception of speech involves
Motor theory - answer- Which speech perception theory has been criticized as being so
vague that it is more of a philosophy than a theory or model?
Perceptual magnets - answer- enhance differences between distinct phonemes
Cohort theory - answer- based on similarity of acoustic features of the beginning of
words
Dominant language exposure gradually decreases discrimination of non-native speech
features - answer- research with infants has shown that
A refinement of everyday thinking - answer- What is science?
Empirical, deterministic, predictive, parsimonious - answer- What are the 4 features of
the scientific method?
Semitone - answer- A nonlinear increase in frequency as you go from low to high
12 - answer- How many semitones are in one octave?
5.9% - answer- There are ________ more semitones in the octave before the last
Sampling rate - answer- the frequency with which numbers are stored or written down to
represent the analog signal that you're sampling.
The higher the sampling rate, the better the playback quality - answer- How does
sampling rate relate to playback quality?
, Nyquist frequency - answer- The highest frequency the can be reproduced- or the
highest sampling rate
High pass filter - answer- allows high frequencies through and holds back lower
frequencies
Low pass filter - answer- blocks high frequencies. The best way to avoid aliasing during
a digital recording.
Band pass filter - answer- allows a band of frequencies though and holds back both
higher and lower frequencies
Band reject filter - answer- holds back a band of frequencies and allows both higher and
lower frequencies through
Frequency domain - answer- a line spectrum shows the frequency components of a
period sound
Time domain - answer- a waveform represents sound directly, air pressure changes
over time
FFT spectrum - answer- -clearly shows harmonic energy
-each peak is a harmonic
-less clear at showing formants
-more revealing of source
LPC Spectrum - answer- -shows spectral envelope
-good at revealing formants
-does not show harmonics
-more revealing of filter
Time, frequency, intensity - answer- In a 3D spectogram, the x-axis represents
_________, the y-axis represents ____________, and the darkness represents
________________
Vocal modulation - answer- rhythmic changes that are predictable in fundamental
frequency and in amplitude in the voice; gradual increases and decreases that occur
over the course of many glottal cycles
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