LPC residual signal encoding/decoding apparatus of modified discrete cosine transform (MDCT)-based unified voice/audio encoding device
First Claim
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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, andwherein the overlap-adding comprises overlap-adding the first block applied to a first window into the intentional signal applied to a second window.
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Abstract
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).
20 Citations
7 Claims
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1. A processing method for processing a signal performed in a device, comprising:
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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. - View Dependent Claims (2, 3, 4)
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5. A processing method for processing a signal performed in a device, comprising:
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identify a first block included in a previous frame; identify a second block included in a current frame; and identifying additional information related to the first block; and processing the first block and second block using the additional information, wherein the first block has a speech characteristic and the second block has an audio characteristic, and wherein the processing comprises overlap-adding the first block applied to the additional information into the second block. - View Dependent Claims (6, 7)
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Specification