A computer-based mixing and filtering system for digital sound signals

The use of digital techniques to implement the processing found in conventional analogue mixing desks of the kind used for the mix-downs of multi-channel audio recordings is described. The various problems were investigated individually using a small, high speed computer controlled by a stored program. The experimental equipment did not have sufficient power to perform all the processing required, but a factor of three improvement permits all the functions in one channel of a fully equipped mixing desk to be performed digitally. .DLN : KILLED, SUPERSEDED BY N81-17886