calculateDCOffset()

i32 fl::audio::SignalConditioner::calculateDCOffset ( span< const i16 > pcm, const vector< bool > & validMask )

private

Calculate DC offset from valid samples only.

Parameters

pcm	Input PCM samples
validMask	Validity mask from spike filtering

Returns

Estimated DC offset

Definition at line 112 of file signal_conditioner.cpp.hpp.

                                                                                           {
    const size count = pcm.size();
    i64 sum = 0;
    size validCount = 0;
 
    // Calculate average of valid samples only
    for (size i = 0; i < count; ++i) {
        if (validMask[i]) {
            sum += pcm[i];
            validCount++;
        }
    }
 
    if (validCount == 0) {
        // No valid samples - return zero offset
        return 0;
    }
 
    // Calculate instantaneous DC offset for this buffer
    const i32 instantDC = static_cast<i32>(sum / static_cast<i64>(validCount));
    return instantDC;
}

References fl::span< T, Extent >::size().

Referenced by processSample().

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