This paper describes initial experiments to evaluate the effectiveness of different 3D input interfaces combined with visual feedback for discrete sound placement in film and TV post production. The experiments required the user to control the 3D position of a Sound Object for a moving Target Object within a video clip on screen using a range of physical interfaces with and without visual feedback. Inclusion of visual feedback had a statistically significant impact on the accuracy of the tracking of the Target Object. The Wii remote controller appeared to perform the best in the tests and in the user preference ranking. The traditional desk based input method performed worst in all tests and the user preference ranking.
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