Patent ID: 8332954
Filing Date: 2012-12-11
Classification: G10L,G11B

Abstract:
1. A method of embedding watermarking data in an audio signal, comprising the steps of: (a) incorporating watermarking information into said audio signal, to form a watermarked audio signal, (b) sectioning said watermarked audio signal into at least two sections each section having audio content, each of said sections corresponding to a respective time period of said audio signal, (c) marking at least one of said sections whereby said sections may be identified, (d) generating distortion in a first one of said sections of said signal in a manner recoverable by a key obtainable from at least one other section having audio content, and (e) appending said distorted section to said at least one other section to form a composite signal comprising a distorted section and at least one undistorted section.