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Registered METHOD AND APPARATUS FOR DECODING SPEECH SIGNAL USING ADPATIVE CODEBOOK UPDATE
- Inventors
- Lee Mi Suk, Do Young Kim, Lee Byung Sun
- Application No.
- 13876768 (2011.09.28)
- Publication No.
- 20130246068 (2013.09.19)
- Registration No.
- 9087510 (2015.07.21)
- Country
- UNITED STATES
- Project Code
- 10MI3100, Study on Acoustic Convergence Codec and its Control Technology for FMC, Lee Byung Sun
- Abstract
- Disclosed are a method and apparatus for decoding a an audiospeech signal using an adaptive codebook update. The method for decoding speech an audio signal includes: receiving an N+1-th normal frame data that is a normal frame transmitted after an N-th frame that is a loss frame data loss; determining whether an adaptive codebook of a final subframe of the N-th frame is updated or not by using the N-th frame and the N+1-th frame; updating the adaptive codebook of the final subframe of the N-th frame by using a the pitch index of the N+1-the frame; and synthesizing an audio a speech signal of by using the N+1-th frame.