Digital Acoustic Control System for Reverberation Chambers
AcousticControl uses high-level noise to test the effect of acoustically induced vibration in a reverberation chamber. It is a fully automatic digital control system, providing fast, accurate and repeatable control of high-level noise to a reference octave band spectrum and the overall sound pressure level (OASPL). The control foresees a high level of product safety.
The user interface has the same look and feel as the interface of the VibControl shaker controllers for set-up, test run and post-test analysis. Supporting the same powerful Ethernet-based VibRunner acquisition hardware, AcousticControl can be configured as a VibControl system by simply adding a software module.
- Key Features
- Fully automatic closed-loop acoustic control
- Continuous time domain octave analysis in 1/3 octave bands
- Extensive octave band and OASPL alarm and abort checks for safe testing
- Control of octave bands up to 10 kHz with multi-horn control
- Unlimited number of microphones for control and/or measurement
- Digital sliders with position storage for repeat tests
- Automatic microphone drop-out detection
- Comprehensive post-test analysis and reporting in 2D and 3D
- SO Analyzer for advanced analysis and reporting
- Standalone or 19“ rack mounting
- 8-24 input channels per VibRunner
- Synchronization of multiple VibRunner frontends
- 102.4 kHz max. sampling rate
- 24-bit resolution
- 1 Gbit/s Ethernet interface
- ICP®, TEDS
- 2-12 source output channels per VibRunner, safety shutdown
- 2-12 tacho inputs
- 8 digital inputs/outputs per VibRunner
More information on VibRunner...
Guido Bossaert, m+p international, inc., Verona/New Jersey, and Stephen A. Rizzi, NASA Langley Research Center, Hampton/Virigina, describe improvements to the acoustic control system of the Thermal Acoustic Fatigue Apparatus, a progressive wave tube test facility at the NASA Langley Research Center in Hampton.