Patent ID: 6539095
Filing Date: 2003-03-25
Classification: G06F,G06Q,G06T,G07C,G07D,G07F,G10L,G11B,H04B,H04N,Y10S

Abstract:
A method of processing audio to convey auxiliary control information therewith, the audio being represented by primary data, the auxiliary control information being included with plural-bit auxiliary data, the method comprising:receiving the plural bit auxiliary data; and encoding the plural-bit auxiliary data into the primary data without audible evidence of data alteration; wherein the encoding includes: for a bit of the auxiliary data, adding a scaled signal corresponding to the bit to adjust a statistical characteristic of a group of corresponding audio samples in the audio data so that the statistical characteristic of the group corresponds to a symbol value of the bit; and repeating the adding of a scaled signal corresponding to bits in the auxiliary data.