トランスクリプション
音楽の自動記譜のためには、以下の問題が解決されなければならない。
1. Notes must be recognized - this is typically done by changing from the time domain into the frequency domain. This can be accomplished through the Fourier Transform. Computer algorithms for doing so are common in signal processing. The Fast Fourier transform algorithm computes the frequency content of a signal, and is therefore very useful in processing musical excerpts.
2. A beat and tempo need to be detected - this is a difficult, many-faceted problem. One attempt is recorded in this scholarly article: Simon Dixon Citation