Real time karaoke grader using Modal Distribution for Android devices

The increasing market for mobile devices requires us to investigate the viability of writing computationally expensive digital signal processing applications for these devices. Modal Distribution was used to acquire a time-frequency representation to evaluate singing ability using a karaoke application. Pitch and tempo were both used as basis for grading. The trade-off between the time-frequency resolution and the execution time of the algorithm especially for devices with slower processors was studied to observe the optimal parameters for Modal Distribution. A resolution of 10 milliseconds for tempo and 31.25 Hz were thus obtained.