Attack, Decay, Sustain and Release are the four stages of an envelope that describe the shape of a sound over time. Attack represents the time the sound takes to rise from an initial value of zero to [..]

a method by which a MIDI device detects disconnection. A message is sent to the receiver around three times per second, and if no message is received during this period, the unit assumes the MIDI conn [..]

a synthesis method that builds complex waveforms by combining sine waves whose frequencies and amplitudes are independently variable.

a measurement of the force applied by a performer to the key on a controller after it has been depressed. Either polyphonic, which measures the pressure on each individual key, or monophonic, reflecti [..]

the standard file format for storing audio information on an Apple Macintosh computer.

a set of instructions supplied to a computer for the purpose of solving a problem.

a three byte MIDI channel message that instructs the receiving device to terminate all notes currently sounding.

``false frequencies'' that are created when sampling frequencies greater than one-half the sampling rate.

a device that increases the amplitude, power or current of a signal. The resulting signal is a reproduction of the input signal as well as this increase.

the strength or magnitude of any changing quantity when compared to its \Qat rest' or \Qzero' value.