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Clatter Reduction for Electronic Artificial Larynx

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Abstract

After total laryngectomy the normal voice can be replaced by an electronic artificial larynx (AL). However, the results of the surrogate voice are not overall satisfying due to a robotic clattered sound of that prosthesis. In this paper the outcome of a sound investigation for an AL is presented. This work is part of our AL research project on laryngectomee speech enhancement. As a result, an autoregressive model of the hearing process is derived that can directly be used for a novel speech-enhancement procedure. The model is derived in the framework of linear prediction theory based on the fact that speech can be modelled as the output of a linear filter excited by a periodic pulse train and random noise. Additionally, we developed an innovative training unit for novice laryngectomees measuring the relative inter-line energy of the speech.

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Correspondence to Thorsten M. Buzug.

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Buzug, T.M., Strothjohann, M. Clatter Reduction for Electronic Artificial Larynx. Int J Speech Technol 8, 271–281 (2005). https://doi.org/10.1007/s10772-006-6892-1

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  • DOI: https://doi.org/10.1007/s10772-006-6892-1

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