operator()()

float MaxFadeTracker::operator() ( const int16_t * samples, size_t length )

inline

Process one 512-sample block; returns [0…1] with inertia.

Definition at line 32 of file fx.h.

                                                            {
        assert(length == 512);
        // 1) block peak
        float peak = 0.0f;
        for (size_t i = 0; i < length; ++i) {
            float v = std::abs(samples[i]) * (1.0f/32768.0f);
            peak = std::max(peak, v);
        }
 
        // 2) time delta
        float dt = static_cast<float>(length) / sampleRate_;
 
        // 3) update currentLevel_ with attack/decay
        if (peak > currentLevel_) {
            float riseFactor = 1.0f - std::exp(-attackRate_ * dt);
            currentLevel_ += (peak - currentLevel_) * riseFactor;
        } else {
            float decayFactor = std::exp(-decayRate_ * dt);
            currentLevel_ *= decayFactor;
        }
 
        // 4) output inertia: smooth smoothedOutput_ → currentLevel_
        float outFactor = 1.0f - std::exp(-outputRate_ * dt);
        smoothedOutput_ += (currentLevel_ - smoothedOutput_) * outFactor;
 
        return smoothedOutput_;
    }

References attackRate_, currentLevel_, decayRate_, length(), outputRate_, sampleRate_, and smoothedOutput_.

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