Aligning singing voice with MIDI melody using synthesized audio signal

Proper alignment of singing voice to its corresponding musical score is particularly important for singing voice analysis and processing in many applications. This paper proposes a method to align singing voice with its MIDI melody. The MIDI is first converted into a synthesized music audio file. Then spectral features are calculated for both singing voice and MIDI synthesis files. Next dynamic time warping method is used to perform forced alignment between the two feature sequences. Experiments show that the alignment result is promising.