Automatic acoustical testing system - drives device to be tested with audio signal and processes output by circuit under computer control for digital read-outs

摘要

An automatic acoustical testing system includes an oscillator generating a selected signal frequency. An amplifier receives this signal to provide an amplified driving signal which is coupled to the acoustical device to be tested. An output from the device to be tested is received and digitally processed. A distortion analyser circuit processes an output even further. A digital computer processor controls and processes analog and digital signals provided to and derived from the foregoing appts.