Implementation and Evaluation of Real-Time Interactive User Interface Design in Self-learning Singing Pitch Training Apps

We present a self-learning singing pitch training tool on the smart-phone to evaluate the efficacy of the real-time interaction mechanism for improving users’ intonation and timing, which are the most essential techniques in singing. It consists of (1) an intonation level classifier, (2) a scoring mechanism to help the users know how well they perform, and (3) an interactive pitch training mechanism. We stress the importance of our app’s practicality, such that it serves as a guideline for implementing and enhancing similar singing training apps. Experimental results show that the synthesized singing demonstration and the visual feedback design are helpful and natural to comprehend. Our performance evaluation method shows that the score of user intonation improved by an average of 94.81% after training with our tool.