Electronics and Telecommunications Research Institute

Jong-Won Seok

Tae Jin Lee

Jin-Woo Hong

Seung Kwon Beack

Jongmo Sung

Woo-taek Lim

Inseon Jang

Yunsu Kim

Jin-Heung Lee

Disclosed are methods of encoding and decoding an audio signal, and an encoder and a decoder for performing the methods. The method of encoding an audio signal includes identifying an input signal corresponding to a low frequency band of the audio signal, windowing the input signal, generating a first latent vector by inputting the windowed input signal to a first encoding model, transforming the windowed input signal into a frequency domain, generating a second latent vector by inputting the transformed input signal to a second encoding model, generating a final latent vector by combining the first latent vector and the second latent vector, and generating a bitstream corresponding to the final latent vector.

Methods of encoding and decoding audio signal, and encoder and decoder for performing the methods

In the apparatus and method for a watermark embedding and detection through a linear prediction analysis, and a record medium capable of being read through a computer having a writing of a program to realize the inventive method, in which a quality of a signal does not drop, even after an imbedding of a watermark by using a signal based on a changed shape of an original signal through a use of a linear prediction analysis, with a watermark signal to be imbedded in a digital signal, but also the watermark signal containing copyright information can be detected even though an optional attack is applied thereto.

Apparatus and method for watermark embedding and detection using linear prediction analysis

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Taejon, South Korea

Jong-Won Seok