Patent ID: 9161038
Filing Date: 2015-10-13
Classification: G10L,H04N

Abstract:
1. A method for decoding a high frequency signal using a decoder, the method comprising: Obtaining, by the decoder, signal class information and frequency information of a high frequency signal of a current frame by decoding; Obtaining, by the decoder, a high frequency excitation spectrum of the current frame, determining normalization length according to the signal class of the high frequency signal of the current frame and low frequency signal information, and obtaining a normalized high frequency excitation spectrum by normalizing the high frequency excitation spectrum according to the normalization length; Modifying, by the decoder, the normalized high frequency excitation spectrum by using the frequency information, and obtaining a high frequency spectrum of the current frame; and Outputting, by the decoder, an output signal obtained by using the high frequency spectrum of the current frame.