[Paper] Effects of Dynamic Local Lag Control on Sound Synchronization and Interactivity in Joint Musical Performance

Abstract

In this paper, we propose dynamic local lag control which dynamically changes the local lag according to the network delay for sound synchronization in joint musical performance where multiple users play musical instruments together through a network. We also make a comparison between the dynamic local lag control and the local lag control with fixed values of local lag in terms of the synchronization quality of sound, interactivity, and comprehensive quality by QoE (Quality of Experience) assessment. In the assessment, for joint musical performance, we use a networked haptic drum system in which two users play a drum set in a 3D virtual space with the same rhythm at the same tempo by using haptic interface devices As a result, we illustrate that the dynamic local lag control is effective.