Multi-tap delays allow the user to accurately define many repeats, and offer the user full control over balance and decay times. Uses advanced algorithms to improve a stereo image. Often used to add transparency to a single instrument or final mix. Brightens the mix by calculating and adding high frequency harmonics to the audio signal. Used to attenuate frequencies from an audio signal.
Noise gates are basically automatic level controls.
An advanced tone control used for applying precise EQ modifications, the graphic equalizer allows the user to adjust the individual gains of between one and thirty frequencies. Often used to compensate for acoustic anomalies. Combines retuned copies with the original signal. The new signals are usually calculated at specific musical intervals to simulate vocal harmonies. Professional versions allow the user to 'capture' the unwanted noise and use it as a template for the reduction process.