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)) |
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