LPC residual signal encoding/decoding apparatus of modified discrete cosine transform (MDCT)-based unified voice/audio encoding device

摘要

Disclosed is an LPC residual signal encoding/decoding apparatus of an MDCT based unified voice and audio encoding device. The LPC residual signal encoding apparatus analyzes a property of an input signal, selects an encoding method of an LPC filtered signal, and encode the LPC residual signal based on one of a real filterbank, a complex filterbank, and an algebraic code excited linear prediction (ACELP).

主权项

1. A processing method for processing a signal performed in a device, comprising:
identify a first block included in a previous frame; identify a second block included in a current frame; identifying an intentional signal related to the first block; and overlap-adding the first block and second block using a window applied to the intentional signal, wherein the first block has a speech characteristic and the second block has an audio characteristic, and wherein the overlap-adding comprises overlap-adding the first block applied to a first window into the intentional signal applied to a second window.