Term: X Curve

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The X Curve is a frequency response that represents the real frequency response that a flat sound system creates in a large theater. In a large room, the level of the reflected sound becomes as significant as the level of the direct sound, so the listener hears a frequency response with rolled-off high frequencies above 2 kHz. To simulate the sound of a theater on near-field monitors, you may apply an X curve EQ to your monitor chain.