calculateValence()

float fl::audio::detector::MoodAnalyzer::calculateValence ( float centroid, float rolloff, float flux )

private

Definition at line 162 of file mood_analyzer.cpp.hpp.

                                                                                           {
    // Valence estimation based on spectral characteristics
    // Higher frequencies and brighter timbre = more positive
    // Lower frequencies and darker timbre = more negative
 
    // Normalize centroid to 0-1 range (assuming 32 bins)
    float normalizedCentroid = centroid / 32.0f;
 
    // Brightness score (higher = more positive)
    float brightness = normalizedCentroid * rolloff;
 
    // Stability score (lower flux = more positive/calm, higher = more negative/chaotic)
    float stability = 1.0f - fl::min(1.0f, flux / 10.0f);
 
    // Combine into valence (-1 to 1)
    float valence = (brightness * 0.6f + stability * 0.4f) * 2.0f - 1.0f;
 
    // Clamp to valid range
    return fl::max(-1.0f, fl::min(1.0f, valence));
}

References brightness, fl::FL_NO_EXCEPT, fl::max(), and fl::min().

Referenced by update().

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