US8990072B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8990072-B2 |
| Application number | US-200913054376-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 14, 2009 |
| Priority date | Jul 14, 2008 |
| Publication date | Mar 24, 2015 |
| Grant date | Mar 24, 2015 |
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Provided are an apparatus and a method for integrally encoding and decoding a speech signal and a audio signal. The encoding apparatus may include: an input signal analyzer to analyze a characteristic of an input signal; a first conversion encoder to convert the input signal to a frequency domain signal, and to encode the input signal when the input signal is a audio characteristic signal; a Linear Predictive Coding (LPC) encoder to perform LPC encoding of the input signal when the input signal is a speech characteristic signal; a frequency band expander for expanding a frequency band of the input signal whose output is transmitted to either the first conversion encoder or the LPC encoder based on the input characteristic; and a bitstream generator to generate a bitstream using an output signal of the first conversion encoder and an output signal of the LPC encoder.
Opening claim text (preview).
The invention claimed is: 1. An encoding apparatus for integrally encoding a speech signal and an audio signal, the encoding apparatus comprising: an input signal analyzer to analyze a characteristic of an input signal; a frequency band expander to expand frequency band of the input signal; a first conversion encoder to convert the input signal to a frequency domain, and to encode core band of the converted input signal if the analyzed input signal is an audio characteristic s…
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