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Pitch scaling, time stretching, and more -- all without metallic artifacts: why OverLap-Add with the frame-based baseline remains the most efficient approach.

Efficient voice pitch scaling without artifacts.

Efficient voice time stretching without artifacts.

The signal processing progression that decouples time from pitch, and why a 1993 algorithm still outperforms modern AI for this specific task.

When an equation exists, use the bloody equation. How we balance classical signal processing and neural networks for efficient and portable audio technology.