PSY280H1 Lecture Notes - Musical Tone, Fundamental Frequency, Middle Ear
13
PSY280H1 Full Course Notes
Verified Note
13 documents
Document Summary
Ch11 sound, the auditory system and pitch perception. Sound two definitions, physical & perceptual: physical: sound is pressure changes in the air or other medium, perceptual: sound is the experience we have when we hear. Sound as pressure changes: sound stimulus occurs when an object"s movements/vibrations cause. Pressure changes: complex tones: complex tones waveform != a sine wave, but a combination. Is a periodic tone the waveform repeats. Repetition rate of complex tone is called the. Periodic complex tones consist of number of pure tones pressure changes in air, water, any elastic medium surrounding the object ex. loudspeaker vibrations affect surrounding air by: Condensation diaphragm moves out push air molecules: can build a complex tone by additive synthesis = number of sine- wave components are added together to create a complex tone. Fundamental frequency starting point for creating a together, increase nearby molecule density complex tone, the first pure tone. Rarefaction speaker diaphragm moves back in pull air.
