online-offline · dannenberg2006-score-alignment-accompaniment

Here we seek a correspondence between a symbolic music representation and an audio performance of the same music [...]. Off-line matching uses the complete performance to estimate the correspondence between audio data and symbolic score. [...] Off-line score matching's real-time cousin, sometimes called score-following, processes the audio data on-line as the signal is acquired, thus, no "look ahead" is possible. [...] The application dearest to the hearts of both authors is the accompaniment system, which generates a flexible musical accompaniment that follows a live soloist. [...] Other applications include the automatic coordination of audio-visual equipment with musical performance, such as opera supertitles and lighting effects, as well as real-time score-based audio enhancement e.g. pitch correction, and automatic page turners. [...] The biggest success of on-line score following so far has been computer accompaniment.