The number on your sports watch. The shouting of your coach. The feeling of your feet moving rhythmically. The... rising sound of a synthesizer on your ankles? EMMA is a set of wearable devices that aims to add a different modality of feedback to sports. Sound is generated in real-time, based on your acceleration. Sonic feedback on your movement provides you with extra information through your ears, which makes it perceivable from anywhere without distracting other senses. Three unique sounds can make your movements audible, each designed & usable for different applications within running. As addition to, not replacement of, the feedback of your body, coach, and data, these sounds inform you of your movements during your exercise, being mechanically coupled to movements you perform.

As a first exploration into sonic interaction design, this project aimed to explore the viability of an auditory display for runners. Key activities during the process were interviews, experience prototyping, hardware development, and user-testing with the functional prototypes that were produced. Involvement of casual & advanced runners, as well as experts in coaching and sports theory, indicated that EMMA is an interesting addition and analysis tool for exercises, allowing runner & coach to specify on specific movements through focusing on placement and sound feedback of the devices.