Morphilter is a stereo multi-mode filter with LFO-driven crossfading. Morphilter produces lowpass, notch, highpass and bandpass filter responses. It allows a continuous crossfade from one response to the next. This crossfade may be automated by an LFO. In addition, the cutoff frequencies of the left and right filters may be independently modulated by two further LFOs. All three LFOs may independently be locked to tempo or free-running.