Now showing items 1-6 of 6

  • Channel selection and reverberation-robust automatic speech recognition 

    Wolf, Martin (Universitat Politècnica de Catalunya, 2013-11-11)
    Doctoral thesis
    Open Access
    If speech is acquired by a close-talking microphone in a controlled and noise-free environment, current state-of-the-art recognition systems often show an acceptable error rate. The use of close-talking microphones, however, ...
  • Channel selection measures for multi-microphone speech recognition 

    Nadeu Camprubí, Climent; Wolf, Martin (2014-02-01)
    Article
    Restricted access - publisher's policy
    Automatic speech recognition in a room with distant microphones is strongly affected by noise and reverberation. In scenarios where the speech signal is captured by several arbitrarily located microphones the degree of ...
  • Channel selection using N-best hypothesis for multi-microphone ASR 

    Wolf, Martin; Nadeu Camprubí, Climent (2013)
    Conference report
    Restricted access - publisher's policy
    If speech is captured by several arbitrarily-located microphones in a room, the degree of distortion by noise and reverberation may vary strongly from one channel to another. Channel selection for automatic speech recognition ...
  • Extension of the remos concept to frequency-filtering-based features for reverberation-robust speech recognition 

    Maas, Roland; Wolf, Martin; Sehr, Armin; Nadeu Camprubí, Climent; Kellermann, Walter (2011)
    Conference report
    Restricted access - publisher's policy
    The introduction of partly decorrelated features into the REMOS (REverberationMOdeling for Speech recognition) concept for distant-talking speech recognition [1] is discussed. REMOS combines a hidden Markov model (HMM), ...
  • Model-based processing for acoustic scene analysis 

    Nadeu Camprubí, Climent; Chakraborty, Rupayan; Wolf, Martin (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
    Restricted access - publisher's policy
    The analysis of acoustic scenes requires several functionalities, being perhaps recognition (speech, speaker, other acoustic events) and spatial localization the two most relevant ones. For a reduced invasiveness, ...
  • On the potential of channel selection for recognition of reverberated speech with multiple microphones 

    Wolf, Martin; Nadeu Camprubí, Climent (2010)
    Conference report
    Open Access
    The performance of ASR systems in a room environment with distant microphones is strongly affected by reverberation. As the degree of signal distortion varies among acoustic channels (i.e. microphones), the recognition ...