TY - GEN
T1 - An improved blind bandwidth extension method for audio coding
AU - Liu, Hui
AU - Zhao, Shenghui
AU - Wang, Jing
AU - Kuang, Jingming
PY - 2010
Y1 - 2010
N2 - Some existing blind bandwidth extension algorithms are restricted to linear extrapolation, such as linear spectrum replication. In this paper, we propose an improved blind bandwidth extension method using a non-linear extrapolation to reconstruct the missing high-frequency components. By training weights of the neural network in real time, the highband signal can be reconstructed dynamically. Objective and subjective listening tests are used to evaluate the performance of the proposed algorithm, and the results show that it obtains higher quality signals.
AB - Some existing blind bandwidth extension algorithms are restricted to linear extrapolation, such as linear spectrum replication. In this paper, we propose an improved blind bandwidth extension method using a non-linear extrapolation to reconstruct the missing high-frequency components. By training weights of the neural network in real time, the highband signal can be reconstructed dynamically. Objective and subjective listening tests are used to evaluate the performance of the proposed algorithm, and the results show that it obtains higher quality signals.
KW - BP algorithm
KW - Blind bandwidth extension
KW - Neural network
KW - Predictive extrapolation
UR - http://www.scopus.com/inward/record.url?scp=77954022325&partnerID=8YFLogxK
U2 - 10.1109/CMC.2010.343
DO - 10.1109/CMC.2010.343
M3 - Conference contribution
AN - SCOPUS:77954022325
SN - 9780769539898
T3 - 2010 WRI International Conference on Communications and Mobile Computing, CMC 2010
SP - 356
EP - 360
BT - 2010 WRI International Conference on Communications and Mobile Computing, CMC 2010
T2 - 2010 International Conference on Communications and Mobile Computing, CMC 2010
Y2 - 12 April 2010 through 14 April 2010
ER -