![]() The techniques were devised and implemented to achieve low latency between action and the electronically-generated sounds, as well as keep computational efficiency high. ![]() The developed sound engine leveraged digital signal processing, sensor fusion, and machine learning techniques to classify the position, dynamics, and timbre of each hit. ![]() The instrument was equipped with five piezo pickups attached to the internal panels and a condenser microphone located inside. A conventional acoustic cajón was enhanced with sensors to classify position of the hit and the gesture that produced it. This paper describes the implementation and technical evaluation of the designed component of the smart cajón related to hit classification and repurposing. In previous work, we established design requirements for a novel smart musical instrument, a smart cajón, following a user-centered approach. Smart musical instruments are a class of IoT devices for music making, which encompass embedded intelligence as well as wireless connectivity.
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