Exam 1 for comd 5070 questions & answers

Exam 1 for comd 5070What is science? (4 features of Scientific Method) - correct answer • Empirical- based on data • Deterministic- obeys physical laws • Predictive- cause and effect relationships • Parsimonious- use the simplest explanation SLP's use of technology (why do we use it clinically? How can acoustics help?) - correct answer • Overcome listener bias • Its consistent, reliable measurement • To describe severity objectively • Track progress over time (demonstrate treatment efficacy) • EBP- evidence based practice • Provide biofeedback to the client (show client what they are doing on computer display) Pitch perception vs. frequency measurement (perceptual judgement vs. acoustic measures) - correct answer • Frequency- how frequently a waveform repeats (Hz- Hertz- cycles per second) (objective measurement) • pitch- perceptual judgement of frequency (subjective/cannot be measured with instruments) • Simplest sound- pure tones • Complex tones- multiple frequencies including fundamental (lowest) frequency • Periodic sounds- a harmonic series (fundamental frequency is often strongest) • Harmonics- integer multiples • Human voice has fundamental and harmonics, perceived pitch follows fundamental, auditory system responds to all frequencies (voice is nearly periodic) Quality- timbre