Psyc 515 Test 1 Exam Questions and Correct Solutions 2024

Psyc 515 Test 1 Exam Questions and Correct Solutions 2024 Physical definition of sound - Answer -sound is pressure changes in the air or other mediums Perceptual/Psychological definition of sound - Answer -sound is the experience we have when we hear Acoustics - Answer -study of the production, transmission and reception of sound Dr. P's opinion - Answer -NO, sound is caused by waves of molecules, but the waves are not sound; sound is a psychological event and hence depends on a nervous system to transduce the physical energy of the vibrations to nerve energy. Without a brain to register the physical energy, there can be waves laying the groundwork for it but no sound. Wavelength (λ) - Answer -distance from one peak to the next (a single cycle of wave) Frequency (Hertz) - Answer -number of cycles/sec The range of human hearing - Answer -extends from about 15 to 20,000 Hz. Pressure amplitude - Answer -measure of compression or rarefaction at peaks or valleys Timbre - Answer --Fourier components -Harmonics: whole number multiples of Fundamental Frequency (added frequencies) Holistic (or Synthetic) vs. Analytic Listening - Answer -focusing on the whole sound and paying little or no attention to components vs hearing different components separately Missing Fundamental (Virtual Pitch) - Answer --Fundamental Frequency -Virtual pitch is the "greatest common factor" e.g., play 500Hz, 750 Hz, and 1000 Hz: will hear 250 Hz even though not played Physical Dimension: -amplitude (intensity) -frequency -complexity - Answer -Perceptual Dimension: -loudness-pitch -timbre Threshold of Hearing - Answer -depends on: -Frequency -Duration -Combinations Subjective Dimension: Loudness - Answer --Amplitude -Pitch (Equal Loudness Contours) -Duration -Context (what precedes) Subjective Dimension: Pitch - Answer --Frequency -Intensity