Perceptually Motivated Guidelines for Voice Synchronization in Film

Project Members

Elizabeth J. Carter (Carnegie Mellon University)
Lavanya Sharan (Disney Research Pittsburgh)
Laura C. Trutoiu (Carnegie Mellon University)
Iain Matthews (Disney Research Pittsburgh)
Jessica Hodgins (Disney Research Los Angeles, Disney Research Pittsburgh)

We consume video content in a multitude of ways, including in movie theaters, on television, on DVDs and Blu-rays, online, on smart phones, and on portable media players. For quality control purposes, it is important to have a uniform viewing experience across these various platforms. In this work, we focus on voice synchronization, an aspect of video quality that is strongly affected by current post-production and transmission practices. We examined the synchronization of an actor’s voice and lip movements in two distinct scenarios. First, we simulated the temporal mismatch between the audio and video tracks that can occur during dubbing or during broadcast. Next, we recreated the pitch changes that result from conversions between formats with different frame rates. We show, for the first time, that these audio visual mismatches affect viewer enjoyment. When temporal synchronization is noticeably absent, there is a decrease in the perceived performance quality and the perceived emotional intensity of a performance. For pitch changes, we find that higher pitch voices are not preferred, especially for male actors. Based on our findings, we advise that mismatched audio and video signals negatively affect viewer experience.

Publications

Perceptually Motivated Guidelines for Voice Synchronization in Film-Thumbnail

Perceptually Motivated Guidelines for Voice Synchronization in Film
July 1, 2010
ACM Transactions on Applied Perception (ACM TAP) 2010
Paper File [pdf, 2.87 MB]

Copyright Notice

The documents contained in these directories are included by the contributing authors as a means to ensure timely dissemination of scholarly and technical work on a non-commercial basis. Copyright and all rights therein are maintained by the authors or by other copyright holders, notwithstanding that they have offered their works here electronically. It is understood that all persons copying this information will adhere to the terms and constraints invoked by each author's copyright. These works may not be reposted without the explicit permission of the copyright holder.