Paddle Arrays

Double-layer Channel System for Near Field Measurements

This portable handheld paddle features 48 or 104 double-layered microphone channels that allow for real-time acoustic near field measurements. The double-layer structure enables the measurement of acoustic pressure signals while particle velocity/acoustic intensity on the measurement plane is calculated and mapped simultaneously. This array connects to the mcdRec data recorder.

Acoustic Camera Paddle 2x52 AC Pro and Paddle 2x24 AC Pro
Easy to handle: the Acoustic Camera Paddle 2x52 AC Pro and Paddle 2x24 AC Pro

Features

  • Lightweight design of the paddle allows an easy handling
  • Array design effectively minimizes partial reflections and resonance effects
  • Available as an add-on to an Acoustic Camera system or as a stand-alone solution
  • Calculation kernel for acoustic near field calculations is embedded in NoiseImage

Further Details

Array Design


The design of the paddle is lightweight and allows for easy handling. The array-body is designed as slim as possible, ensuring accurate microphone positioning. The wiring of the microphones is enclosed in and protected by the array-body which guarantees the best possible acoustic transparency to measure accurate sound levels.

Additionally, the array design effectively minimizes partial reflections and resonance effects between the measured object and the array. Furthermore, the microphone lay-out facilitates a differentiation between noise sources on the measurement plane and in the field behind the paddle.

Paddle 2x24 AC Pro

Technical Data

  • Array-body diameter: 30 x 33 cm
  • Net Weight: 0.9 kg with cable 1.5 kg
  • SymBus microphone connectors via differential conditioning, connecting array Cable length to data recorder: 1-20 m
  • Recommended measurement distance: 0.1-0.15 m
  • Advanced disturbance tolerant ¼” symmetrically buffered electret pressure receivers (based on Sennheiser microphone capsule 4211)
  • Number of microphones: 48
  • Frequency response of microphones: 20 Hz-20 kHz (± 3 dB)
  • Dynamic range of microphones: 28-130 dB (A-weighted)
  • Max. equivalent sound level: 130 dB
  • Symmetrical output resistance: 100 Ω
  • Ethernet Video Camera with wide angle lens 
  • Five super bright LEDs to object plane
  • Ingress protection code: IP20
  • Operating environment: 0°…45°C, up to 80% r.h.
Paddle 2x52 AC Pro

Technical Data

  • Array-body diameter: 70,5 cm x 34,55 cm x 18,6 cm
  • Net Weight: 1,6 kg with cable 2,5 kg
  • SymBus microphone connectors via differential conditioning, connecting array Cable length to data recorder: 1 - 20 m
  • Recommended measurement distance: 9 cm
  • Advanced disturbance tolerant ¼” symmetrically buffered electret pressure receivers (based on Sennheiser microphone capsule 4211)
  • Number of microphones: 104
  • Frequency response of microphones: 20 Hz-20 kHz (± 3 dB)
  • Dynamic range of microphones: 28-130 dB (A-weighted)
  • Max. equivalent sound level: 130 dB
  • Symmetrical output resistance: 100 Ω
  • Ethernet Video Camera with wide angle lens 
  • Five super bright LEDs to object plane
  • Ingress protection code: IP20
  • Operating environment: 0°…45°C, up to 80% r.h.