Patent ID: 8504377
Filing Date: 2013-08-06
Classification: G10L,H04N

Abstract:
1. A method of decoding a signal, the method comprising: receiving a signal including at least one of an audio signal and a speech signal, the signal corresponding to a low frequency region signal, and the signal having a high frequency region signal removed by an encoder; obtaining mode information indicating whether the signal is coded using an audio coding scheme or a speech coding scheme; when the mode information indicates that the signal is coded using the audio coding scheme, obtaining modification flag information indicating whether a window of the signal is adjusted; when the modification flag information indicates that the window of the signal is adjusted, obtaining modification reconstruction information indicating a value for adjusting a length of the window; adjusting the length of the window based on the modification reconstruction information; decoding the signal by using the length-adjusted window; determining an extension base signal corresponding to a partial region of the signal based on extension information; and generating an extended downmix signal having a bandwidth extended by reconstructing the high frequency region signal using the extension base signal.