Key-Finding Based on a Hidden Markov Model and Key Profiles
Néstor Nápoles López, Claire Arthur, Ichiro Fujinaga · 2019
Musicologists and musicians often would like to search by keys in a digital music library. In this paper, we introduce a new key-finding algorithm that can be applied to music in both symbolic and audio formats. The algorithm, which is based on a Hidden Markov Model (HMM), provides two stages of key-finding output; the first one referring to local keys and the second one to the global key.