Analysis of the voice source in different phonation types: simultaneous high-sped imaging of the vocal fold vibration and glottal inverse filtering. - Hannu Pulakka; Paavo Alku; Svante Granqvist; Stellan Hertegard; Hans Larsson; Anne-Maria Laukkanen; Per-Ake Lindestad; Erkki Vilkman (INTERSPEECH, 2004)

A toolkit for voice inverse filtering and parametrisation. - Matti Airas; Hannu Pulakka; Tom Bäckström; Paavo Alku (INTERSPEECH, 2005)

Group delay function as a means to assess quality of glottal inverse filtering. - Paavo Alku; Matti Airas; Tom Bäckström; Hannu Pulakka (INTERSPEECH, 2005)

Quality improvement of telephone speech by artificial bandwidth expansion - listening tests in three languages. - Hannu Pulakka; Laura Laaksonen; Paavo Alku (INTERSPEECH, 2006)

The effect of highband harmonic structure in the artificial bandwidth expansion of telephone speech. - Hannu Pulakka; Paavo Alku; Laura Laaksonen; Päivi Valve (INTERSPEECH, 2007)

HMM-based Finnish text-to-speech system utilizing glottal inverse filtering. - Tuomo Raitio; Antti Suni; Hannu Pulakka; Martti Vainio; Paavo Alku (INTERSPEECH, 2008)

Evaluation of an Artificial Speech Bandwidth Extension Method in Three Languages. - Hannu Pulakka; Laura Laaksonen; Martti Vainio; Jouni Pohjalainen; Paavo Alku (IEEE Trans. Speech Audio Process., 2008)

Development, evaluation and implementation of an artificial bandwidth extension method of telephone speech in mobile terminal. - Laura Laaksonen; Hannu Pulakka; Ville Myllylä; Paavo Alku (IEEE Trans. Consumer Electron., 2009)

Bandwidth extension of telephone speech using a filter bank implementation for highband MEL spectrum. - Hannu Pulakka; Ville Myllylä; Laura Laaksonen; Paavo Alku (EUSIPCO, 2010)

Comparison of formant enhancement methods for HMM-based speech synthesis. - Tuomo Raitio; Antti Suni; Hannu Pulakka; Martti Vainio; Paavo Alku (SSW, 2010)

Speech bandwidth extension using Gaussian mixture model-based estimation of the highband mel spectrum. - Hannu Pulakka; Ulpu Remes; Kalle J. Palomäki; Mikko Kurimo; Paavo Alku (ICASSP, 2011)

Utilizing glottal source pulse library for generating improved excitation signal for HMM-based speech synthesis. - Tuomo Raitio; Antti Suni; Hannu Pulakka; Martti Vainio; Paavo Alku (ICASSP, 2011)

Low-Frequency Bandwidth Extension of Telephone Speech Using Sinusoidal Synthesis and Gaussian Mixture Model. - Hannu Pulakka; Ulpu Remes; Santeri Yrttiaho; Kalle J. Palomäki; Mikko Kurimo; Paavo Alku (INTERSPEECH, 2011)

Bandwidth Extension of Telephone Speech Using a Neural Network and a Filter Bank Implementation for Highband Mel Spectrum. - Hannu Pulakka; Paavo Alku (IEEE Trans. Speech Audio Process., 2011)

HMM-Based Speech Synthesis Utilizing Glottal Inverse Filtering. - Tuomo Raitio; Antti Suni; Junichi Yamagishi; Hannu Pulakka; Jani Nurminen; Martti Vainio; Paavo Alku (IEEE Trans. Speech Audio Process., 2011)

Conversational evaluation of artificial bandwidth extension of telephone speech using a mobile handset. - Hannu Pulakka; Laura Laaksonen; Ville Myllylä; Santeri Yrttiaho; Paavo Alku (ICASSP, 2012)

Automatic Detection of High Vocal Effort in Telephone Speech. - Jouni Pohjalainen; Tuomo Raitio; Hannu Pulakka; Paavo Alku (INTERSPEECH, 2012)

Conversational Evaluation of Speech Bandwidth Extension Using a Mobile Handset. - Hannu Pulakka; Laura Laaksonen; Ville Myllylä; Santeri Yrttiaho; Paavo Alku (IEEE Signal Process. Lett., 2012)

Bandwidth Extension of Telephone Speech to Low Frequencies Using Sinusoidal Synthesis and a Gaussian Mixture Model. - Hannu Pulakka; Ulpu Remes; Santeri Yrttiaho; Kalle J. Palomäki; Mikko Kurimo; Paavo Alku (IEEE Trans. Speech Audio Process., 2012)

Speech quality prediction for artificial bandwidth extension algorithms. - Sebastian Möller 001; Emilia Kelaidi; Friedemann Köster; Nicolas Côté; Patrick Bauer; Tim Fingscheidt; Thomas Schlien; Hannu Pulakka; Paavo Alku (INTERSPEECH, 2013)

Enhancement of speech intelligibility in near-end noise conditions with phase modification. - Emma Jokinen; Marko Takanen; Hannu Pulakka; Paavo Alku (INTERSPEECH, 2014)

Subjective voice quality evaluation of artificial bandwidth extension: comparing different audio bandwidths and speech codecs. - Hannu Pulakka; Anssi Rämö; Ville Myllylä; Henri Toukomaa; Paavo Alku (INTERSPEECH, 2014)

Speech quality evaluation of artificial bandwidth extension: comparing subjective judgments and instrumental predictions. - Hannu Pulakka; Ville Myllylä; Anssi Rämö; Paavo Alku (INTERSPEECH, 2015)

A subjective listening test of six different artificial bandwidth extension approaches in English, Chinese, German, and Korean. - Johannes Abel; Magdalena Kaniewska; Cyril Guillaume; Wouter Tirry; Hannu Pulakka; Ville Myllylä; Jari Sjoberg; Paavo Alku; Itai Katsir; David Malah; Israel Cohen; M. A. Tugtekin Turan; et al. (ICASSP, 2016)

Phase modification for increasing the intelligibility of telephone speech in near-end noise conditions - evaluation of two methods. - Emma Jokinen; Hannu Pulakka; Paavo Alku (Speech Commun., 2016)