Hmmm

Low-frequency shaping plugin for mastering

Hmmm is a mastering-focused plugin designed for precise control of low-frequency content.

Instead of manually selecting EQ frequencies, Hmmm automatically tracks the dominant low-frequency peak in a mix and processes the fundamental and its harmonics as a single, coherent system. All processing is restricted to that frequency and its harmonics, allowing focused low-end adjustments without affecting unrelated parts of the spectrum.

Hmmm is intended for small, deliberate changes rather than broad tonal shaping. It can be used both as a corrective tool when low-frequency balance needs attention and as a creative processor for deciding how the bass should feel in a finished mix.

Main features

• Automatic detection of the dominant low-frequency tone.
• Processing of fundamental, first harmonic, and second harmonic.
• Static and dynamic processing modes.
• Minimum-phase and linear-phase processing options.
• Adjustable loudness compensation.
• Delta monitoring for detailed analysis.
• Designed specifically for mastering use.

Typical use cases

• Fine-tuning low end in finished mixes.
• Low-frequency balance correction without broad EQ moves.
• Harmonic shaping of bass and kick.
• Cleaning up uneven low-frequency buildup while retaining weight.
• Situations where traditional EQ or multiband tools feel too blunt.