System and method for controlling audio source
An apparatus for signal processing, wherein a disc is placed on a turntable and is provided with a groove which can be followed by the pick-up element, and employing a time-code signal wherein during use of the disc the said time-code signal controls the digital audio source.
1. A method of controlling a sound source, comprising:
deriving a time code signal from a rotating disc, the derived time code signal comprising an absolute time code signal in the audible range;
filtering the derived time code signal to determine a relative time code signal;
determining the speed of rotation of the rotating disc based on the absolute time code signal;
determining a place on the rotating disc based on the relative time code signal;
controlling the speed of play of the sound source based on the absolute time code; and
controlling the direction of play of the sound source based on the relative time code signal.