El-WOZ: a client-server wizard-of-oz interface

Thomas Pellegrini, Vahid Hedayati, Ângela Costa

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

1 Downloads (Pure)


In this paper, we present a speech recording interface developed in the context of a project on automatic speech recognition for elderly native speakers of European Portuguese. In order to collect spontaneous speech in a situation of interaction with a machine, this interface was designed as a Wizard-of-Oz (WOZ) plateform. In this setup, users interact with a fake automated dialog system controled by a human wizard. It was implemented as a client-server application and the subjects interact with a talking head. The human wizard chooses pre-defined questions or sentences in a graphical user interface, which are then synthesized and spoken aloud by the avatar on the client side. A small spontaneous speech corpus was collected in a daily center. Eight speakers between 75 and 90 years old were recorded. They appreciated the interface and felt at ease with the avatar. Manual orthographic transcriptions were created for the total of about 45 minutes of speech.
Original languageEnglish
Title of host publicationProceedings of the Ninth International Conference on Language Resources and Evaluation
EditorsNicoletta Calzolari, Khalid Choukri, Thierry Declerck, Hrafn Loftsson, Bente Maegaard, Joseph Mariani, Asuncion Moreno, Jan Odijk, Stelios Piperidis
Place of PublicationReykjavik
Number of pages4
ISBN (Print)978-2-9517408-8-4
Publication statusPublished - 2014
EventLREC 2014 - The 9th International Conference on Language Resources and Evaluation - Reykjavik, Iceland
Duration: 26 May 201431 May 2014


ConferenceLREC 2014 - The 9th International Conference on Language Resources and Evaluation
Abbreviated titleLREC 2014
Internet address


  • Speech Recording Interface
  • Wizard-of-oz
  • European portuguese Elderly Speech


Dive into the research topics of 'El-WOZ: a client-server wizard-of-oz interface'. Together they form a unique fingerprint.

Cite this