In this Section, we introduce the Analog Synthesizer MIDI Instrument. We discuss basic synthesis and the main points therein. This includes oscillators, waveforms, filtering and amplitude. We also explore the difference between monophonic and polyphonic synth patches. Throughout the process, we create new synth patches in real time.
Different waveforms used in synthesis include sine, saw, triangle and square.
As with the Simpler, the Analog synthuses various envelopes to make changes or contour the sound by utilizing filters and sound design tools ADSR to change the way a waveform is played back.
ADSR is an acronym for Attack Sustain Decay and Release
Attack time is the time taken for initial run-up of level from nil to peak, beginning when the key is first pressed.
Decay time is the time taken for the subsequent run down from the attack level to the designated sustain level.
Sustain level is the level during the main sequence of the sound's duration, until the key is released.
Release time is the time taken for the level to decay from the sustain level to zero after the key is released.