Automatic levels, often found in audio and image editing software, refers to an algorithm or process that automatically adjusts the tonal range (brightness, contrast, and color balance) of an image or audio signal to improve its overall appearance or clarity. In image editing, it remaps the darkest and brightest pixels to black and white, respectively, and redistributes the intermediate values. In audio, it adjusts the volume levels to achieve a consistent and optimal range, preventing clipping or excessively quiet sections. It's commonly used to quickly enhance media content, especially when manual adjustments are time-consuming or the user lacks the technical expertise.
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