Mel-scale features exhibit measurable cultural bias with 12.5% higher WER on tonal languages and 15.7% F1 drop on non-Western music, while adaptive alternatives reduce these gaps substantially.
The mel scale, derived from 1940s Western studies, was never validated cross-culturally
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Cross-Cultural Bias in Mel-Scale Representations: Evidence and Alternatives from Speech and Music
Mel-scale features exhibit measurable cultural bias with 12.5% higher WER on tonal languages and 15.7% F1 drop on non-Western music, while adaptive alternatives reduce these gaps substantially.