Staas & Halsey LLP
Apparatus and method for encoding and decoding of integrated speech and audio utilizing a band expander to output the audio or speech to a frequency domain encoder or an LPC encoder
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.
Kwangwoon University Industry-Academic Collaboration Foundation Electronics and Telecommunications Research Institute
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Dae Young Jin-Woo Jeongil Seung-Kwon Hochong Min Je Kyeongok Tae Jin Young-cheol
Jang Hong Seo Baek Park Kim Kang Lee Park