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


Battery life (fully charged)

6 hours

Acoustic image

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 - infinity


Sample frequency

21,5 kHz


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


  • 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)

Environmental Conditions

Operating temperature

-10 °C - 60 °C

Relative humidity

45 % - 85 %

Mobile Device

Operating system

Android OS version 10 or higher

Get started

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