Toru NakashikaLSTBM: A Novel Sequence Representation of Speech Spectra Using Restricted Boltzmann Machine with Long Short-Term Memory.2529-25332018INTERSPEECHhttps://doi.org/10.21437/Interspeech.2018-1753conf/interspeech/2018db/conf/interspeech/interspeech2018.html#Nakashika18