Frequency / EQ Reference
Frequency problem solver (symptom → fix), instrument reference mode, and multi-instrument masking detector.
About the Frequency / EQ Reference
The Frequency / EQ Reference is a free interactive tool for music producers who want accurate answers fast. Whether you're searching for EQ frequency reference chart, how to EQ instruments online, frequency problem solver mixing, this tool gives you real-time results without leaving your browser — and explains the reasoning behind every value so you know what to do with it.
Every tool on MusicProductionWiki is built around one principle: answer the question and explain the reasoning. The Frequency / EQ Reference not only calculates — it shows you why those values work, what changes when you adjust them, and what professional producers do differently across genres.
This tool is part of the Frequency & EQ category. It's embedded directly inside the relevant entries in The Producer's Bible — MPW's comprehensive reference library — where it appears in context alongside the theory that explains why each setting works the way it does.
All tools on MusicProductionWiki are free, require no login, and work in any modern browser on desktop or mobile.
Frequently Asked Questions
What frequencies cause muddiness in a mix?
Muddiness typically lives in the 200–400 Hz range. When multiple instruments pile up here — kick, bass, guitar, and keys all occupying the same band — the mix loses definition. A high-pass filter on non-bass elements and a narrow cut around 300 Hz often clears the mud.
How do I find the fundamental frequency of an instrument?
Play the lowest note the instrument will produce in your track, then use a spectrum analyzer to find the highest-amplitude peak. That is the fundamental. Every note above it will have its own fundamental and harmonics stacked above.
What is frequency masking?
Frequency masking occurs when two instruments share the same frequency range and one hides the other. The human ear perceives the louder signal and the quieter one disappears. Fix it with EQ cuts, arrangement changes, or sidechain EQ so each instrument occupies its own pocket.