OD Limen – named after the Latin word for "threshold" – is a high-frequency acceleration limiter designed for mixing and mastering. Rather than limiting the full signal, Limen isolates and processes only the high-frequency content above a user-defined crossover point:

• Depth controls the intensity of the limiting process, from subtle taming to aggressive control.
• Crossover sets the split point using a linear-phase filter with adaptive slope for perfect signal reconstruction.
• Tilt shapes the spectral balance of what the limiter sees, controlling the focus between low and high frequencies.
• Recover preserves your tonal balance – ensuring Limen only affects the dynamics, not the character of your sound. Values above 100% add a silky high-frequency quality that conventional EQ cannot achieve.

Traditional high-frequency limiters rely on a fixed threshold and require careful calibration to match the input level. Limen instead responds to high-frequency acceleration directly, adapting automatically to any input level. The processor features Focus Listen for soloing individual frequency bands, an external sidechain input, configurable keyboard shortcuts, and flexible L/R or M/S channel processing.

Ohlhorst Digital is a brand by Jan Ohlhorst. Initially developed exclusively for his work as a mastering engineer, these well refined products are now being made publicly accessible.

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