The development of a cross-platform multi-player virtual application of Kolintang musical instruments using various controllers

Kolintang (Indonesian's xylophones) is popular nationwide as the traditional music instruments from Minahasa, a regency in North Sulawesi. It is usually played in ancestor worshipping rituals as it was believed that Kolintang had a close relationship with the traditional belief of North Sulawesi's natives and as their culture. Currently, there are several Kolintang applications developed that run either on Windows and Android and use different types of controllers like a web camera, touch screen, and keyboard. Despite their differences, these applications are played offline by a single player only without using an Internet connection. In addition, there is no depth discussion on how the performance of these applications was tested. Thus, this research will develop a more advance Kolintang application that can be played by multiple players simultaneously on multiple platforms, Android and Windows Based, using various controllers such as webcam, keyboard, mouse, or touch screen. The findings revealed that the interaction is best visualized within the range of two to three meters long. The sounding range of this application is safe for human hearing. The Root mean square error (RMSE) and Mean Absolute Error (MAE) tests can only be done to measure the real time auditory feedback from the application since there is no avail ideal data model for sounding range and application load time. The loading time for this application is faster than any Kolintang applications that have been previously developed. This application needs further improvements on the real time auditory feedbacks by diagnosing the variation in the errors in a set of forecasts.