DEVICES FOR ENCODING AND DECODING A WATERMARKED SIGNAL

摘要

An electronic device configured for encoding a watermarked signal is described. The electronic device includes modeler circuitry. The modeler circuitry determines parameters based on a first signal and a first-pass coded signal. The electronic device also includes coder circuitry coupled to the modeler circuitry. The coder circuitry performs a first-pass coding on a second signal to obtain the first-pass coded signal and performs a second-pass coding based on the parameters to obtain a watermarked signal. Aplication to compatible embedding of high-frequency reconstruction parameters determined using the low- frequency coded excitation in a first-pass encoding according to linear predictive coding.