1. Introduction to sound -- 2. Introduction to hearing -- 3. Notes and harmony -- 4. Acoustic model for musical instruments -- 5. Hearing timbre and deceiving the ear -- 6. Hearing music in different environments -- 7. Processing sound electronically -- App. 1. Solving the ERB equation -- App. 2. Converting between frequency ratios and cents -- App. 3. Deriving the reverberation time equation -- App. 4. Deriving the reverberation time equation for different frequencies and surfaces -- App. 5. Track listing for the audio compact disc.