# Microphone

If you have a microphone with reasonably flat response you can use it together with a pink noise test signal to estimate how flat is your audio setup frequency response.

# Window

The amount of time the microphone signal will be measured. Higher values will reduce noises.

# Measure Noise

Saves the last measurement to be used as background noise. Usually you would use this before turning on the pink noise.

# Subtract Noise

Subtract the stored background noise from the measurement.