The rugged Norsonic Nor278 Reference Sound Source for sound power measurements is equally suited to laboratory measurements and field measurements.
The rugged Norsonic Nor278 Reference Sound Source for sound power measurements is equally suited to laboratory measurements and field measurements.
With a 50 Hz mains operating frequency the Nor278 produces 94 dB(A) SWL re 1 pW overall sound power and 75 dB SWL re 1pW in each third octave band 100 – 10,000 Hz.
The Nor278 achieves BS EN ISO 6926 requirements for extended frequency range reference sound source (50 Hz – 10 kHz) with 50 Hz mains frequency.
It can be used for the substitution and juxtaposition methods for sound power (BS EN ISO 3747) and/or the comparison method for sound power (BS EN ISO 3741, 3743-1, 3744 & 3747).
