updateBPMEstimate()

void fl::audio::detector::MusicalBeat::updateBPMEstimate ( )

private

Update BPM estimate from inter-beat intervals.

Definition at line 183 of file musical_beat_detector.cpp.hpp.

                                    {
    if (mIBIHistory.empty()) {
        return;
    }
 
    // Calculate BPM from average IBI
    float avgIBI = getAverageIBI();
    if (avgIBI <= 0.0f) {
        return;
    }
 
    float instantaneousBPM = 60.0f / avgIBI;
 
    // Clamp to valid range
    instantaneousBPM = fl::max(mConfig.minBPM, fl::min(mConfig.maxBPM, instantaneousBPM));
 
    // Smooth BPM estimate (exponential moving average)
    float alpha = mConfig.bpmSmoothingAlpha;
    mCurrentBPM = (alpha * mCurrentBPM) + ((1.0f - alpha) * instantaneousBPM);
 
    // Ensure BPM stays in valid range after smoothing
    mCurrentBPM = fl::max(mConfig.minBPM, fl::min(mConfig.maxBPM, mCurrentBPM));
}

References getAverageIBI(), fl::max(), mConfig, mCurrentBPM, mIBIHistory, and fl::min().

Referenced by processSample().

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