Speech recognition Deep neural networks Gaussian Mixture Model Language recognition Speech communication Spoken language recognition Accuracy Improvement Activity detection Bottleneck features Computational linguistics Deep neural networks (DNNs) Dimensionality reduction Feature vectors Forecasting Gaussian distribution I-vectors In-depth analysis Language identification Microphone data Microphones Neural network (nn) Posterior probability Score-level fusion Senones Speaker recognition Speaker recognition evaluations Speaker verification system Speech Speech data Spoken language recognition (SLR)