Got a question?

Feel free to contact us:

GRAS Sound & Vibration 
Europe & Asia     | Americas
support@gras.dk
 | support@gras.us
+45 4422 5253    | +1 330 892 7024

gras_people-2017_a4a3921_v2.jpg

Free-field Correction Curves

When a free-field or random-incidence microphone is calibrated by way of using an electrostatic actuator (simulated pressure calibration), the response must be corrected for the field in which the microphone is used -  free-field or diffuse-field. You can find the correction values here.