MUSIC 29 Lecture Notes - Lecture 8: Interval Ratio, Fundamental Frequency, Exponential Decay
Document Summary
Attack-decay features a sudden onset of sound (same as attack-impulse) followed by a natural audible exponential decay in amplitude to eventual silence. Attack-impulse or just impulse is characterized in terms of amplitude profile by a sudden and rapid rise to maximum level followed by an immediate termination. Auditory salience is a measure of how much a thing grabs our attention. Graduated continuants are sounds that are continually fueled with energy and involve the continual imposition of gesture. Modes of excitation categorize physical acts or gesture that result in energy being transferred into another object to produce vibration and sound. Once sound is released into a room or open space, the acoustic characteristics of the space will operate on the sound and alter our perception of that sound. Consider three elements: the position of the listener, the location of the source, and the size and acoustic characteristics of the room.
