audioevent

An audioevent is a fundamental concept in digital audio processing and computer music, representing a distinct occurrence or change in an audio signal. It can be triggered by various factors, such as user interaction, a specific time in a musical sequence, or the analysis of an audio stream itself. The nature of an audioevent is highly variable, encompassing a wide range of actions.

Common types of audioevents include note on and note off messages in MIDI (Musical Instrument Digital Interface), which dictate when a musical note begins and ends, respectively. These events often carry associated parameters like pitch, velocity (representing loudness), and duration. Beyond MIDI, audioevents can signify the start or end of a sound playback, a change in volume or panning, the activation of an audio effect, or the detection of a specific audio feature, such as a beat or a transient.

In practical applications, audioevents are crucial for sequencing, synthesis, and interactive audio systems. Digital audio workstations (DAWs) rely heavily on audioevents to reconstruct and manipulate musical performances. Real-time audio processing systems use events to trigger dynamic changes in sound, enabling interactive installations and responsive sound design. The precise definition and handling of audioevents are central to creating and controlling complex audio environments.