Singing Voice Extraction with Attention-based Spectrograms Fusion

We propose a novel attention mechanism-based spectrograms fusion system with minimum difference masks (MDMs) estimation for singing voice extraction. Compared with previous works that use a fully connected neural network, our system takes advantage of the multi-head attention mechanism. Specifically, we 1) try a variety of embedding methods of multiple spectrograms as the input of attention mechanisms, which can provide multi-scale correlation information between adjacent frames in the spectrograms; 2) add a regular term to loss function to obtain better continuity of spectrogram; 3) use the phase of the linear fusion waveform to reconstruct the final waveform, which can reduce the impact of the inconsistent spectrogram. Experiments on the MIR-1K dataset show that our system consistently improves the quantitative evaluation by the perceptual evaluation of speech quality, signal-to-distortion ratio, signal-to-interference ratio, and signal-to-artifact ratio.