How does mic distance affect the sound?

Closer placement gives a drier, more direct sound with more bass (proximity effect) and less room ambience. Further placement captures more room sound, giving a natural, spacious quality. The ratio of direct to reflected sound changes with distance.

What is the 3:1 rule?

When using multiple microphones, place each mic at least three times the distance from each other as they are from their respective sources. This minimises phase cancellation between mics — one of the most common multi-mic recording problems.

Does polar pattern affect placement distance?

Yes. Omnidirectional mics pick up sound equally from all directions and can be placed further away in treated rooms. Cardioid mics reject rear sound, allowing closer placement in untreated rooms. Figure-8 mics pick up front and back but reject the sides.

AudioCalcs

Mic Placement Calculator

Calculate optimal microphone placement distance based on source type, polar pattern and room size.

Sound Source

Type of sound source to record

Polar Pattern

Microphone pickup pattern

Room Size / Treatment

Affects room reflection balance

Desired Character

Tonal quality you want to capture

How We Calculate This

Base Distance

Each source type has a recommended distance range based on typical recording practice. This is adjusted for room acoustics and desired character.

Adjustments

Recommended = Base Distance x Room Factor x Character Factor x Pattern Factor

Smaller rooms and untreated spaces reduce distance. Ambient character increases it. Omnidirectional patterns increase it.

Frequently Asked Questions

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Last updated: March 2026

All calculations are estimates based on standard formulas. Always verify results for critical applications.