Patent ID: 8892226

Claim:
A method of repairing an audio recording, the method comprising the steps of: implementing a processor to process a harmonic signal content of the audio recording; calculating a difference signal from the harmonic signal content by subtracting a predicted harmonic signal from a detected harmonic signal, the predicted harmonic signal being obtainable by a predictor circuit and the detected harmonic signal being detected by the processor; defining a threshold for the difference signal above which the difference signal indicates an occurrence of one or more acoustic excitation events; displaying a maximum amplitude of each indicated excitation event as a function of a maximum duration of the excitation event, and thereby producing an events display which allows an operator to visually distinguish between indicated excitation events that are present as a result of a disturbance in the audio recording and indicated excitation events that are present as a result of natural harmonics in the audio recording; repairing one or more of the displayed excitation events by a repair circuit which is in communication with the processor; adjusting the processor's ability to indicate one or more excitation events by redefining the threshold for the difference signal; and operating a sensitivity controller thereby enabling an operator to define a sensitivity level for the difference signal, the sensitivity level allowing the operator to select a proportion of the total of the displayed excitation events for repair by the repair circuit.