Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Asynchrony perception in audiovisual productions.
Year:2007
Research Areas
  • Electronic
Information
Abstract
This paper investigates the degree of peoples¿ awareness when they are subjected to changes in the synchrony of auditory and visual elements of an audiovisual production. Current audio editing systems have a resolution of one sample, allowing for a very accurate adjustment of the synchrony between sound and image. However, for film and video, the maximum image frame resolution is 1/24 and 1/29.97 seconds respectively [1]. By showing audiovisual sequences to a group of people and varying the difference of reproduction time between audio and image, the asynchrony differential threshold (DL) for dialog and discrete sound elements are evaluated by means of the psychophysical method of constant stimulus. This paper will discuss the number of similar sound elements that can be distinguished without synchrony, and whether being out of synchrony is more perceptible when audio is reproduced before or after the image, in order to establish criteria for editing audio for video, based on the audiovisual perception ability of the audience
International
Si
Congress
19th International Congress on Acoustics (ICA 2007)
960
Place
Madrid, España
Reviewers
Si
ISBN/ISSN
84-87985-12-2
Start Date
03/09/2007
End Date
07/09/2007
From page
To page
Participants
  • Autor: Manuel Recuero Lopez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Investigación en Instrumentación y Acústica Aplicada (I2A2)
  • Centro o Instituto I+D+i: Instituto Universitario de Investigación del Automóvil (INSIA)
  • Departamento: Ingeniería Mecánica y de Fabricación
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