The Zurich Corpus of Vowel and Voice Quality
Sound archive, version 2
Version 2.0 published online 2024-07-31
Last update 2026-10-10 as version 2.1 (see the Additions section for details)
Second version of the Zurich Corpus, published in the context of the book "Acoustics of the Vowel – Indices"
(see below), and later further extended.
The corpus consists of sounds of the revised first version (systematic sample of c. 34,550 utterances of 70 speakers,
the sounds being produced with extensive variation of the production parameters), and c. 3,250 additional sounds
from the work database, including speech extracts, syllables and minimal pairs, filtered sounds, and resynthesised and synthesised sounds.
(The number of sounds will increase with each update of the Additions section.)
The vowel /o/ spoken by an eight-year-old child (left)
and sung by an adult tenor (right) on a fundamental
frequency of circa 250 Hz.
Dieter Maurer1,
Christian d'Heureuse1,
Heidy Suter1,
Volker Dellwo2,
Daniel Friedrichs2,
Thayabaran Kathiresan2
1Institute for the Performing Arts and Film, Zurich University of the Arts, Switzerland
2Department of Computational Linguistics, University of Zurich, Switzerland
