Robust audio hashing based on discrete-wavelet-transform and non-negative matrix factorisation. - Ning Chen; Wanggen Wan; He-D. Xiao (IET Commun., 2010)

Audio hash function based on non-negative matrix factorisation of mel-frequency cepstral coefficients. - Ning Chen; He-D. Xiao; Wanggen Wan (IET Inf. Secur., 2011)