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Detail
Registered APPARATUS AND METHOD FOR CODING SIGNAL IN A COMMUNICATION SYSTEM
- Inventors
- 김홍국, Lee Mi Suk, 이영한, Sung Jongmo, Hyun Woo Kim, Lee Byung Sun, Do Young Kim, Bae Hyun Joo, Yang Heesik
- Application No.
- 13106649 (2011.05.12)
- Publication No.
- 20110280337 (2011.11.17)
- Registration No.
- 8751225 (2014.06.10)
- Country
- UNITED STATES
- Project Code
- 10MI3100, Study on Acoustic Convergence Codec and its Control Technology for FMC, Lee Byung Sun
- Abstract
- Provided is an apparatus and method for encoding a voice and audio signal by expanding a modified discrete cosine transform (MDCT) based CODEC to a wideband and a super-wideband in a communication system. The apparatus for encoding a signal in a communication system, includes a converter configured to convert a time domain signal corresponding to a service to be provided to users to a frequency domain signal, a quantization and normalization unit configured to calculate and quantize gain of each subband in the converted frequency domain signal and normalize a frequency coefficient of the each subband, a search unit configured to search patch information of each subband in the converted frequency domain signal using the normalized frequency coefficient, and a packetizer configured to packetize the quantized gain and the searched patch information and encode gain information of each subband in the frequency domain signal.
- KSP Keywords
- Audio signal, Communication system, Discrete cosine, Discrete cosine Transform, Frequency domain(FD), Modified Discrete Cosine Transform(MDCT), Normalized frequency, cosine transform, frequency domain signal, super wideband(SWB), time-domain