detectBeat()

void fl::AudioReactive::detectBeat ( fl::u32 currentTimeMs )

private

Definition at line 184 of file audio_reactive.cpp.

                                                  {
    // Need minimum time since last beat
    if (currentTimeMs - mLastBeatTime < BEAT_COOLDOWN) {
        mCurrentData.beatDetected = false;
        return;
    }
    
    // Simple beat detection based on volume increase
    float currentVolume = mCurrentData.volume;
    
    // Beat detected if volume significantly increased
    if (currentVolume > mPreviousVolume + mVolumeThreshold && 
        currentVolume > 5.0f) {  // Minimum volume threshold
        mCurrentData.beatDetected = true;
        mLastBeatTime = currentTimeMs;
    } else {
        mCurrentData.beatDetected = false;
    }
    
    // Update previous volume for next comparison using attack/decay
    float beatAttackRate = mConfig.attack / 255.0f * 0.5f + 0.1f;   // 0.1 to 0.6
    float beatDecayRate = mConfig.decay / 255.0f * 0.3f + 0.05f;    // 0.05 to 0.35
    
    if (currentVolume > mPreviousVolume) {
        // Rising volume - use attack rate (faster tracking)
        mPreviousVolume = mPreviousVolume * (1.0f - beatAttackRate) + currentVolume * beatAttackRate;
    } else {
        // Falling volume - use decay rate (slower tracking)
        mPreviousVolume = mPreviousVolume * (1.0f - beatDecayRate) + currentVolume * beatDecayRate;
    }
}

References BEAT_COOLDOWN, mConfig, mCurrentData, mLastBeatTime, mPreviousVolume, and mVolumeThreshold.

Referenced by processSample().

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