I will explain the basic concepts of subtractive synthesis and the terminology of subtractive synthesizers with reference to acoustic principles. It involvesAn envelope is a tool that helps us automate aspects of a sound, it generates a slow, evolving waveform that can be used to modulate different synthesizer parameters such as volume, pitch and timbre. ADSR envelopes represent attack, decay, sustain, and release. The attack of an envelope is the time it takes for the sound to reach its maximum volume. For example, if the attack is short, it will reach maximum volume faster, while if the attack is longer, the note will take longer to reach maximum volume. The decay of an envelope is the rate at which the sound decreases after the note reaches maximum volume. it's at full volume. The sustain of an envelope is the volume the note remains at after decay. The release indicates the speed with which the note fades away after the note has been released, if the release time is short, the fade will be very rapid, on the contrary if the release time is longer the note will take longer to fade away. Filte...