Abstract: A foot controller for electrically controlling a device by a user may include at least one sensor pad module having a first plate of dielectric material. The first plate of dielectric material may support at least two electrodes forming a planar capacitor. The controller may further include a second plate of dielectric material separated from the first plate by a layer of compressible dielectric material. The first plate is adapted to be displaced with respect to the second plate, so as to vary the geometry of an equivalent capacitor which includes the at least two electrodes, the compressible dielectric material and the second plate of dielectric material, thereby varying the value of the capacitance of the equivalent capacitor. The foot controller may further include a control module adapted to generate an electrical control signal which depends on the value of the capacitance.

Abstract: The present invention provides an apparatus comprising digital means adapted to synthesise a digital waveform; conditioning unit means adapted to convert the digital waveform into an analogue waveform; and modulating means adapted to an analogue sound-carrying signal and said analogue waveform, and to modulate said analogue sound-carrying signal using the analogue waveform. In another aspect of the present invention there is provided a method for digitally controlling, continuously and in real-time, at least one analogue sound effect applied to an analogue sound-carrying signal from a musical source, which comprises the steps of synthesising a digital waveform; converting said digital waveform into an analogue waveform; modulating an analogue sound-carrying signal using said analogue waveform as modulating signal.