Utah State University

ComD 5070 exam 1 Acoustic Analysis What 4 things must you nave to get good data (IOW - a good recording)? - correct answer 1) QUIET recording ENVIRONMENT (reduce reverberation) 2) QUALITY MICROPHONE 3) GOOD SIGNAL STRENGTH (so info won't get lost in "noise") saturation, not clipping 4) PROPER SAMPLE RATE (err on the side of detail) What does REVERBERATION mean? - correct answer - ECHOING (from hard surfaces) What does SATURATION refer to? - correct answer - SIGNAL LEVEL as it come...

COMD 5070 EXAM 2pressure - correct answer _______ = force per unit area 6, 12, 18 - correct answer on a laryngeal source spectrum, showing F0 and harmonics, the F0 is the first and tallest harmonic component -_____ dB/octave is associated with a bright, resonant voice -_____ dB/octave is associated with a typical voice -______ dB/octave is associated with a thin, weak voice aperiodic, nearly periodic - correct answer noise is _______ in its waveform, while the human voice is ______ __...

COMD 5070 Final Examneither invariant nor linear - correct answer The speech signal is perceptual normalization - correct answer When a listener simplifies the processing of the speech signal to smooth out superfluous variability, it is called categorical perception - correct 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 - correct answer In duplex perception: the place a...

USU COMD 5070 - Exam 1The Scientific Method 1. empirical 2. deterministic 3. predictive 4. parsimonious Empirical -based on interpret data, direct experience to make sense of behavior -opp. to rational approach in philosophy based on reasoning/careful thought Deterministic -obey physical laws of cause/effect, not random Predictive -if do this, that will happen, can extrapolate to other situations not experienced yet Parsimonious -uses simplest explanation possible

COMD 5070: Exam 1: Week 4 (Digital Systems) What is Digital Sound? MP3 vs. Tapes/Vinyl Music on mp3 players vs. tapes or vinyl records: "it's different", "it's clearer", "it's more convenient", "it's better" What is Digital Sound? Can your ears hear digits? It's not the sound itself that is digital – sound is still perceived as air vibrations, but the way the sound is stored is digital, stored in numeric form. However, the sound is played in analog form. ...

COMD 5070 exam 14 features of the scientific method - correct answer 1) Science is empirical- we collect data and interpret it (based on data) 2) Science is Deterministic - Things are not random. Because of cause and effect, we can draw generalizations from the data that we have and extrapolate 3) Science is predictive - if you do this, then that will happen. 4) Science is parsimonious - use the simplest explanation possible, try to describe things in economical terms so we can understand it....

COMD 5070 - Exam 2 What is fundamental frequency? - fundamental frequency is a physical measure - it is the speed of vocal fold vibration - correlates to the perceptual correlate of pitch - lowest frequency of a periodic waveform Can complex waves still be periodic? Yes, complex waves can still be periodic. Periodic means that a wave has a repeating pattern. Complex means that there is more than one frequency present. These two things can exist. The wave will have a unique pattern wit...

COMD 5070 Final Exam (Latest 2024 / 2025 Update) Acoustics of Speech and Hearing | Questions and Verified Answers | 100% Correct | Grade A - Utah Q: what is the Nyquist frequency? half the sample rate Q: if you want to go up one octave, you ______ the frequency. Answer: double Q: if you want to go down one octave, you ______ the frequency. Answer: halve Q: what does a high pass filter do? Answer: allows high frequencies through Q: what does a low pass filter do? Answer: allows low frequencies th...

COMD 5070 Exam 3 (Latest 2024 / 2025 Update) Acoustics of Speech and Hearing | Questions and Verified Answers | 100% Correct | Grade A - Utah Q: How to calculate frequency? If there is a period of 2ms (0.002 seconds)?- Answer: 1/0.002= 500 Hz. Q: What is a harmonic series? Answer: When multiple sine waves or pure tones are combines together. Q: What are integer multiples? Answer: The whole number multiples of whatever the fundamental frequency is. Q: What is the fundamental frequency? Answer: Th...

COMD 5070 Exam 2 (Latest 2024 / 2025 Update) Acoustics of Speech and Hearing | Questions and Verified Answers | 100% Correct | Grade A - Utah Q: what is subglottal pressure? Answer: P⌄sub -pressure below the larynx -driving pressure for phonation Q: what are some direct ways to measure subglottal pressure? Answer: -tracheal puncture -esophageal pressure Q: how can you measure subglottal pressure? Answer: there are both direct (tracheal puncture and esophageal balloon) and indirect measures (ps...