Patent ID: 8315877
Filing Date: 2012-11-20
Classification: G10L,H04L

Abstract:
1. An encoding data processing apparatus for generating a marked version of an audio signal provided on an audio channel, the marked copy being generated by embedding data representing a payload data word into the audio signal, the encoding data processing apparatus comprising: a code word generator operable to generate a water mark code word from the payload data word and to read data representing the water mark code word into a memory, and a shuffle processor operable to generate pseudo randomly at least one address within an address space of the memory for each predetermined period and to read data representing part or parts of the water mark code word out from the memory at locations identified by the randomly generated address, and a data embedding processor operable to receive the audio signal and to embed the data representing the part or parts of the water mark code word read out from the memory into the audio signal for each predetermined period.