• Clustering acoustic segments using multi- stage agglomerative hierarchical clustering 

      Lerato, Lerato; Niesler, Thomas (Public Library of Science, 2015)
      Agglomerative hierarchical clustering becomes infeasible when applied to large datasets due to its O(N2) storage requirements. We present a multi-stage agglomerative hierarchical clustering (MAHC) approach aimed at large ...
    • Evaluating the applications of spatial audio in telephony 

      Blum, Konrad (Stellenbosch : University of Stellenbosch, 2010-03)
      ENGLISH ABSTRACT: Telephony has developed substantially over the years, but the fundamental auditory model of mixing all the audio from di erent sources together into a single monaural stream has not changed since the ...
    • Large-Scale clustering of acoustic segments for sub-word acoustic modelling 

      Lerato, Lerato (Stellenbosch : Stellenbosch University, 2019-04)
      ENGLISH ABSTRACT: A pronunciation dictionary is one of the key building blocks in automatic speech recognition (ASR) systems. However, pronunciation dictionaries used in state-of-the-art ASR systems are hand-crafted by ...