We introduce a data-driven approach to automatic pitch correction of solo singing performances. The proposed approach predicts note-wise pitch shifts from the relationship between the respective spectrograms of the singing and accompaniment. This approach differs from commercial systems, where vocal track notes are usually shifted to be centered around pitches in a user-defined score, or mapped to the closest pitch among the twelve equal-tempered scale degrees. The proposed system treats pitch as a continuous value rather than relying on a set of discretized notes found in musical scores, thus allowing for improvisation and harmonization in the singing performance. We train our neural network model using a dataset of 4,702 amateur karaoke performances selected for good intonation. Our model is trained on both incorrect intonation, for which it learns a correction, and intentional pitch variation, which it learns to preserve. The proposed deep neural network with gated recurrent units on top of convolutional layers shows promising performance on the real-world score-free singing pitch correction task of autotuning.

本论文介绍了一种基于数据驱动的自动音高校正方法，该方法利用歌唱声音和伴奏音频相应的频谱图之间的关系来预测音符级别的音高变化。该方法通过神经网络模型进行训练，包括卷积层和门控循环单元，可适用于自由即兴和协调音乐演唱。

Deep Autotuner: 用于歌唱表演的音高校准网络