Understanding the Algorithm Behind Audio Key Detection
Henrique Perez G. Silva
TL;DR
This paper presents an algorithmic approach for automatic musical key detection in audio recordings, utilizing digital signal processing and theoretical key profiles to analyze tonal content.
Contribution
It introduces a novel methodology combining DSP techniques with key profile comparison for improved accuracy in key detection.
Findings
Effective in identifying musical keys from audio data
Outperforms some existing key detection methods
Applicable to various music genres
Abstract
The determination of musical key is a fundamental aspect of music theory and perception, providing a harmonic context for melodies and chord progressions. Automating this process, known as automatic key detection, is a significant task in the field of Music Information Retrieval (MIR). This article outlines an algorithmic methodology for estimating the musical key of an audio recording by analyzing its tonal content through digital signal processing techniques and comparison with theoretical key profiles.
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