A system for measuring audio signals generated during sporting activity

A system for producing an output signal representative of characteristics of a sporting action from an audio signal received from a sporting event comprising an input 10 for receiving an audio signal, a processor 14 to derive features from the signal, an analyser to analyse the features of the signal with reference to the characteristics of the equipment that produced the signal and an output device 20. The system may analyse the frequency, amplitude, cepstral coefficients or prosodic parameters of the audio signal and the output 20 may provide a graphical representation. Also disclosed is a system which compares audio signals with those in a database to identify the closest match. A further disclosure provides for a system which analyses an audio signal at a range of spaced sensors to make calculations in respect of the direction of the sound which may include the use of spherical harmonic decomposition.