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Reducing errors by increasing the error rate: MLP Acoustic Modeling for Broadcast News Transcription

Information Technology Laboratory, National Institute of Standards and Technology
Publication Date
  • Electrical Engineering
  • Artificial Intelligence
  • Musicology
  • Physics


We describe some aspects of a Broadcast News recognition system based on hybrid HMM/MLP acoustic modeling. These include the use of novel 'modulation spectrogram' features which are combined with conventional models at the posterior probability level, some experiments with nonlinear segment normalization, and an investigation of the interaction of model size and training set size for an multilayer perceptron (MLP) acoustic classifier. We also report preliminary results of incorporating gender-dependence into this system.

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