Abstract
Dancing is always challenging especially for beginners who may lack sense of rhythm. Salsa, as a popular style of dancing, is even harder to learn due to its unique overlapped rhythmic patterns made by different Latin instruments (e.g., Clave sticks, Conga drums, Timbale drums) together. In order to dance in synchronization with the Salsa heats, the beginners always need prompts (e.g., beat counting voice) to remind them of the beat timing. The traditional way to generate the Salsa music with heat counting voice prompts requires professional dancers or musicians to count Salsa heats manually, which is only possible in dance studios. Additionally, the existing music beat tracking solutions cannot well capture the Salsa beats due to its intricacy of rhythms. In this work, we propose a mobile device enabled beat counting system, SalsaAsst, which can perform rhythm deciphering and fine-grained Salsa beat tracking to assist Salsa dancers with beat counting voice/vibration prompts. The proposed system can be used conveniently in many scenarios, which can not only help Salsa beginners make accelerated learning progress during practice at home but also significantly reduce professional dancers' errors during their live performance. The developed Salsa beat counting algorithm has the capability to track beats accurately in both real-time and offline manners. Our extensive tests using 10 Salsa songs under 8 evaluation metrics demonstrate that SalsaAsst can accurately track the beats of Salsa music and achieve much better performance comparing to existing beat tracking approaches.