Product Data • Three array sizes with up to 384 microphones available • Real time virtual microphone • igital microphones, no extra D acquisition unit needed • Intuitive software • lug and play within 5 minutes P Features • Robust camera front-end based on a circular carbon fibre disc, three sizes available: - 128 microphones 0.4 meter array, only 2.5 kg weight - 256 microphones 1 meter array, only 11 kg weight - 384 microphones 1.6 meter array for lower frequency analysis • No interface box between array and laptop, direct connection with LAN cable • Listen to and analyse real time audio from virtual microphone position • Virtual microphone enables you to listen to the sound contribution from any source real time, filtered with your selected frequency range • Microphones on a disc prevent sound and echo from behind • Low self-noise and large measurement range • RPM option for analysing rotating machines. • High-performance optical video camera is included in the camera front-end unit • The distribution of the high number of microphones ensures high resolving power and reduces the problems due to side lobe effects compared to most other acoustic cameras • Digital microphones ensure large dynamic range and high stability • Simple connection to the included MacBook Pro computer through a single LAN-cable. • All parts are integrated in the camera frontend – no need for a signal processing interface box • Operated on mains or DC input • Records the signal from every microphone Innovative sound instrumentatiton www.norsonic.com

Noise abatement planning for environmental noise

Easy operation The Norsonic Nor848A sets a new standard for acoustical cameras. The large number of microphones eliminates the problems of ghost-spots, compared to traditional acoustical cameras where the relatively low number of microphones increases the side lobe effect, resulting in the so called ghost- spot effect where you may measure a nonexisting source. The Nor848A software is extremely intuitive and easy to use. Just after a few minutes of training, the user is able to operate the system and do real measurements. Three camera frontends are available. A 0.4m array with 128 microphones,...

Online analysing software - intuitive and easy to use! Record button Playback control Select the colour range Set the frequency range for analysis

Virtual microphone position selected by the cursor. Used for analysis and listening Set the focal distance Display the spectrum as FFT, 1/3 or 1/1 octave A, C or flat weighting selection Video frames for quick navigation within recording Sound level history Time axis Listen to broadband or selected frequency band

The digital microphone elements are protected behind the disc-shaped carbon fibre enclosure. A dust and water repellent mesh is protecting the microphones from dust and moisture. The robust and sturdy construction also ensures that all microphones are kept in the correct position – important for field applications. The small distance between the microphones in the inner circle is important for low spatial aliasing at higher frequencies. The large number of microphones also contributes to the wide measurement range and the low self-noise. The signal in the selected direction is based on the weighted...

Leakage localization for building acoustics applications Specifications 0.4 meter array Number of microphones digital mems 4th order Delta Sigma Resolution Sampling rate per sample 16 bit/sample 48kHz efficient after downsampling and antializing from 2,1 Mhz Noise level, A-weighted Microphone frequency range Mapping frequency range Sampling frequency Analysing spectrum 4096 lines 11,8 Hz line width Focal distance Optical camera resolution Optical camera frame rate Optical/acoustic covering angle Temperature range Humidity range Mains supply (via mains adaptor) Power consumption frontend Disc...

Included in the delivery • Acoustic camera array Nor848A-0.4, frontend disc with 128 microphones build in optical video camera and electronic interface alternatively acoustic camera array Nor848A-10, frontend disc with 256 microphones build in optical video camera and electronic interface. Alternatively Nor848A-16, frontend disc with 384 microphones, optical video camera and electronic interface and processing unit • On-line analysing software with recording, measurement and post-processing functions. Supplied with Bose noise cancelling headphones for optimum on-line listening. Ready installed...