Mood Detector

It extracts acoustic features such as loudness, spectral shape, MFCC timbre, rolloff, and kurtosis, then applies a hand-built heuristic to estimate six mood dimensions. It is not a trained emotion classifier and does not understand lyrics, cultural context, or listener intent.

Valence is the tool's estimate of how positive or negative the recording sounds from its acoustic profile. A higher score may align with brighter or more euphoric material, while a lower score may align with darker material. It is a comparison aid, not an objective emotional truth.

Energy estimates intensity and loudness; valence estimates positive versus negative character; tension reflects harshness; warmth reflects low-frequency richness; complexity reflects timbral and spectral variety; and danceability estimates rhythmic drive. Read the scores relative to one another, then listen to confirm.

No. This tool applies an acoustic heuristic to the recording rather than understanding lyric meaning, so the result estimates audible energy, timbre, rhythm, and harmonic character without interpreting narrative or cultural context.

Yes, as a relative comparison when you analyze similarly representative sections with the same tool. The scores come from one acoustic heuristic, not a calibrated emotional scale, so use the profile to shortlist tracks, then listen before making the final judgment.