Watermarking to convey auxiliary information, and media embodying same

摘要

The present invention related generally to audio encoding and decoding. Various arrangements are disclosed. One method obtains audio, wherein authorized or original audio comprises in-band information and associated out-of-band information; searches for out-of-band information associated with obtained audio; searches the obtain audio for in-band information associated with the obtained audio; and based at least in part on a result of the searching for out-of-band information and the searching the obtained audio for in-band information, reaches a decision regarding the obtained audio. Other arrangements are disclosed as well.