a rangefinder measurement fills Distance above

start Polarity Check above, feed headphone-out into the system, point this mic at the speaker

Pick your USB measurement mic after allowing mic access. Each mic keeps its own calibration & correction. Applies to RTA too.

no correction file (flat)

peak hold: — dB

—

Match against a real SPL meter once per device

uses the Delay tab's temperature & humidity

locating…