Sound Scanner P254

The Sound Scanner P254 was specially developed for environmental noise measurements and applications with particularly low-frequency sound events. With a measurement diameter of 2.54m, the Sound Scanner P254 is the world's largest portable acoustic camera that can accurately localize frequencies starting from 125 Hz. The Sound Scanner P254 extends the portfolio of Sound Scanners for special applications in the low-frequency range. The modularity of the Sound Scanner system allows you to achieve optimum measurement results for your applications of interest. Leverage the opportunity of now being able to localize particularly low-frequency sound events and benefit from a fast setup time. The Sound Scanner quickly delivers results with high image quality, from which you can effectively derive targeted technical solutions.



Diameter of scan area 254 cm
Weight (excl. sensor mount and tripod) 900 g
Rotation frequency (min/typ/max) 0,2/0,5/1 revolutions/second
Number of microphones 5
Battery life (fully charged) 6 hours


Frequency range 125 Hz - 4 kHz
Spatial resolution at 5 kHz (3 dB dynamic range) 1,4 °
Dynamic range > 13 dB
Computed images per revolution up to 6
Measuring distance > 0,5 m 


Sample frequency 21,5 kHz
Resolution 24 bit
Frequency range 50 Hz - 20 kHz
Sensitivity tolerance +/- 1 dB
Maximum measurable sound pressure level 117 dB
Absolute maximum sound pressure level 160 dB


Audio Real time display of time signal, sound pressure level in dB(A), frequency spectrum and spectrogram
  Stream/Pause mode
  Selection of time/frequency intervals and audio playback of the filtered signal
Acoustic image/video Selection of frequency band
  Playback of filtered audio
  Single frame or time averaged frames
  Video playback
Data management Automated pdf report generation of single acoustic image or timed averaged images including meta data (time, location, notes, etc.), time signal, spectrum and spectrogram

Export and import of measurements in zip format via installed file sharing apps (e.g. Google Drive)


Operating temperature -10 °C - 60 °C
Relative humidity 45 % - 85 %


Operating system Android OS version 10.0 or higher

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