Some 1/2″ microphones may be placed inside as well as outside the car (outside the flow).

These microphones are useful to measure the noise level inside the car and also to detect local leak for example between doors and windows.

Type Free field
Frequency range (+/- 1dB) 6.3 – 20000Hz
Max. level SPL ( 146dB
Sensibility env. 50mV/Pa
Output data Temporal data

Narrow band spectra (dB or dB(A))

Third octave band spectra (dB(A))