Method for obtaining a signal transferred in frequency and envelope adjusted by altafrequu00eancia spectral reconstruction.Method for obtaining a signal folded in frequency and envelope adjusted by spectral reconstruction of altafrequu00eancia, apparatus to obtain a signal transferred in frequency and envelope adjusted.Apparatus for obtaining a signal folded in frequency and envelope adjusted decoder to decode coded signals and method for decoding coded signals

摘要

Summary "methods to obtain an envelope adjusted and a signal transferred or folded down in frequency by spectral reconstruu00e3o high frequency.Apparatus for obtaining an envelope signal and a ajutado transladdo or folded down in frequency.Decoder for decoding coded signals and method for decoding coded signals ", the present invention relates to a method and apparatus for improving reconstruction techniques inHigh frequency (HFR) using translation or lower in frequency, or a combination of these.The present invention can be applied to audio source coding systems, and allows a substantial reduction of computational complexity.This is accomplished through translation or lower in frequency in the field of sub band, preferably together with a spectral envelope adjustment in the same domain.And the concept of filtering of guard band of dissonance is additionally displayed.The present invention provides a method of HFR, intermediate quality of low complexity useful in applications of audio coding and natural voice. 1 / 1