Assisting the Multi-directional Limb Motion Exercise with Spatial Audio and Interactive Feedback.

Guiding users with limb motion exercises can assist them in their physical recovery and muscle training. However, traditional visual tracking methods often require multiple camera angles to help the user understand their movements and require the user to be within the range of the screen. This is not effective for more ubiquitous situations. Therefore, we propose a method that uses spatial audio to guide the user with a multiple-directional limb motion exercise. Depending on the user’s perception of spatial audio’s direction, we designed feedback to help the user adjust the movement height and complete the move to the designated position. We attached a smartphone to the body limb to capture the user’s motion data and generate feedback. The experiment showed that with our designed methods, the user could conduct the multiple-directional limb exercise to the designated position. The spatial audio-based limb’s motion exercise system could create a natural, pervasive, and non-visual exercise training system in daily life.