ISCA Archive Interspeech 2005
ISCA Archive Interspeech 2005

A toolkit for voice inverse filtering and parametrisation

Matti Airas, Hannu Pulakka, Tom Bäckström, Paavo Alku

Voice inverse filtering is a process in which the effects of the vocal tract are cancelled from the speech signal to estimate the airflow through the glottis. Although inverse filtering has many applications in both research and clinical examination of voice production, few voice inverse filtering software packages exist. In the present paper, we propose a flexible software package, HUT Voice Source Analysis and Parametrisation Toolkit (Aparat) for use in the MATLAB environment. It implements glottal inverse filtering and several time-based parameters of the voice source in a graphical user interface. The software package is available under an open source licence at

doi: 10.21437/Interspeech.2005-434

Cite as: Airas, M., Pulakka, H., Bäckström, T., Alku, P. (2005) A toolkit for voice inverse filtering and parametrisation. Proc. Interspeech 2005, 2145-2148, doi: 10.21437/Interspeech.2005-434

  author={Matti Airas and Hannu Pulakka and Tom Bäckström and Paavo Alku},
  title={{A toolkit for voice inverse filtering and parametrisation}},
  booktitle={Proc. Interspeech 2005},