How can I reduce feedback risk?

Increase mic distance from speakers, use directional mics, and add absorption to raise critical distance.

Feedback Margin Calculator

Rough maximum stable gain before feedback (distance + directivity model).

Mic to speaker distance (m)

Critical distance r_c (m)

Microphone pattern

Current system gain (dB)

How the feedback margin calculator works

Distance from microphone to speaker, critical distance, microphone directivity, and current system gain feed a simple stability estimate: maximum gain before feedback and remaining margin in dB.

Key terms

Acoustic feedback - loop where loudspeaker energy re-enters the microphone and regenerates.
Feedback margin - headroom between operating gain and unstable gain.
Critical distance - room-related boundary between direct and reverberant pickup.

Frequently asked questions

How can I reduce feedback risk? Increase mic distance from speakers, use directional mics, and add absorption to raise critical distance.