통합 음성/음악 신호 부/복호화 방법 및 장치
이태진, 박영철, 박호종, 김민제, 강경옥, 백승권, 장대영, 홍진우, 서정일
- 9711159 (2017.07.18)
- 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 with the spectral band replication (SBR) standard for expanding the 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.
- KSP 제안 키워드
- Audio signal, Characteristic signal, Encoding and decoding, Input signal, Predictive Coding, Spectral Band Replication(SBR), Speech Signals, frequency band, frequency domain(FD), frequency domain signal, linear predictive coding(LPC), signal analyzer