MULTI-MODE AUDIO RECOGNITION AND AUXILIARY DATA ENCODING AND DECODING

摘要

Audio signal processing enhances audio watermark embedding and detecting processes. Audio signal processes include audio classification and adapting watermark embedding and detecting based on classification. Advances in audio watermark design include adaptive watermark signal structure data protocols, perceptual models, and insertion methods. Perceptual and robustness evaluation is integrated into audio watermark embedding to optimize audio quality relative the original signal, and to optimize robustness or data capacity. These methods are applied to audio segments in audio embedder and detector configurations to support real time operation. Feature extraction and matching are also used to adapt audio watermark embedding and detecting.

主权项

1. A method of embedding a watermark in an electronic audio signal, the method comprising:
analyzing the audio signal to identify an embedding location that does not have sufficient signal in which to embed a watermark signal element; boosting the audio signal at the embedding location; and embedding the watermark signal element at the embedding location, using the boosting to mask audibility of a change in the audio signal made to embed the watermark signal.