Hmmm
by Noisebud · Resonance Suppressor · Automatic low-end peak shaper
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Hmmm is a Noisebud mastering plugin that finds the dominant low-frequency tone and processes it together with its first and second harmonics.
It works in static or dynamic mode, in minimum or linear phase, and costs $49 or comes with a Patreon membership from $6.
Best for: Mastering, Mix Bus, Bass. Genres: all genres.
Keywords: mastering, bass, dynamic, full mix, linear-phase, corrective, kick, bus processing, minimum-phase, mix bus, mixing, multi-band, surgical, tracking.
What it does
Hmmm is a Noisebud mastering plugin for "precise control of low-frequency content". Instead of making you hunt for a frequency with an EQ, it tracks the dominant low-frequency peak in a mix and treats that note and its harmonics as one system.
- Automatic tracking: finds and tracks the dominant low-frequency peak, so there is no manual frequency selection.
- Fundamental plus harmonics: processes the fundamental together with its first and second harmonics, so a booming note is shaped as a whole.
- Static or dynamic: a fixed change, or processing that depends on the level of the note.
- Phase options: minimum-phase or linear-phase processing.
- Loudness compensation: adjustable, so you can compare processed and unprocessed sound at matched level.
- Delta monitoring: lets you hear only what the plugin is changing.
- Focused changes: leaves unrelated parts of the spectrum alone; the developer aims it at cases where EQ or multiband tools "feel too blunt".
The current version is 1.11 (April 2026), which the developer says has 80.4% less latency; KVR still lists 1.02. It is built with SynthEdit. It is sold separately or included with Noisebud's Patreon membership. Demos are available.
When to use it
Hmmm is the pick for one specific mastering problem: a bass or kick note that booms or builds up unevenly in a finished mix. Compared with oeksound soothe3 or TDR Arbiter, which tame resonances across the whole spectrum, it works only in the low end and follows one dominant note with its first two harmonics. Compared with a hand-set dynamic EQ band, it finds the problem note for you and shapes its harmonics in the same move. Its delta and loudness compensation make it easy to check that only the boom is going, not the weight of the low end.
- Best for: controlling a booming or uneven bass note on a master, and shaping bass and kick harmonics together.
- Genres: any; most useful in bass-heavy electronic, hip-hop and pop.
- Look elsewhere if: you need resonance control across the whole spectrum or harshness in the mids and highs; soothe3 or TDR Arbiter cover that.
Where to buy
- Noisebud: $49
Tutorials and reviews
- Noisebud - Hmmm - You haven't seen an EQ like this before
- Noisebud - Hmmm v1.10 update - User Requests Added
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