DSP Digital Signal Processing Making Audio Plugins Part 5: Digital Distortion Making Audio Plugins Part 8: Synthesizing Waveforms Making Audio Plugins Part 9: Receiving MIDI Making Audio Plugins Part 11: Envelopes Making Audio Plugins Part 12: Envelope GUI Making Audio Plugins Part 13: Filter Making Audio Plugins Part 14: LFO Making Audio Plugins Part 16: Polyphony Part I Making Audio Plugins Part 17: Polyphony Part II Making Audio Plugins Part 18: PolyBLEP Oscillator