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An Efficient Retrieval Method of Encrypted Speech Based on Frequency Band Variance.
Qiu-Yu Zhang
Zi-xian Ge
Si-Bin Qiao
Published in:
J. Inf. Hiding Multim. Signal Process. (2018)
Keyphrases
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retrieval method
frequency band
image retrieval
retrieval accuracy
high frequency
content based image
speech recognition
subband
low frequency
speech signal
transfer function
radio frequency
computer vision
color histogram
high level
low level