detectTransient() [2/2]

bool fl::audio::detector::Transient::detectTransient ( float flux, u32 timestamp )

private

Definition at line 113 of file transient.cpp.hpp.

                                                                      {
    // Check cooldown period
    u32 timeSinceLastTransient = timestamp - mLastTransientTime;
    if (timeSinceLastTransient < mMinIntervalMs) {
        return false;
    }
 
    // Calculate adaptive threshold based on recent energy history
    float adaptiveThreshold = 0.0f;
    if (!mEnergyHistory.empty()) {
        float sum = 0.0f;
        for (size i = 0; i < mEnergyHistory.size(); i++) {
            sum += mEnergyHistory[i];
        }
        float meanEnergy = sum / static_cast<float>(mEnergyHistory.size());
 
        // Threshold is based on mean energy and configured threshold
        if (meanEnergy > 1e-6f) {
            adaptiveThreshold = mThreshold * mSensitivity;
        }
    }
 
    // Check if flux exceeds threshold
    if (flux <= adaptiveThreshold) {
        mStrength = 0.0f;
        return false;
    }
 
    // Calculate strength based on how much we exceeded threshold
    if (adaptiveThreshold > 0.0f) {
        mStrength = fl::min(1.0f, (flux - adaptiveThreshold) / adaptiveThreshold);
    } else {
        mStrength = fl::min(1.0f, flux);
    }
 
    return true;
}

References fl::FL_NO_EXCEPT, mEnergyHistory, fl::min(), mLastTransientTime, mMinIntervalMs, mSensitivity, mStrength, and mThreshold.

Referenced by update().

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