The use of flexible modular instrumentation based on PXI (PCI extensions for instrumentation), employing a distributed hardware and software architecture in noise mapping applications, has been demonstrated. NASA, Boeing, and other aerospace industry partners are flight testing new technologies to make aircraft quieter on takeoff and landing. Higher sampling rates, higher channel counts,
... [Show full abstract] increased dynamic range, and distributed architectures were used in a system designed to be easily scalable and extensible. The versatility of instrumentation can be adjusted for varying channel counts making it more cost effective. Boeing was able to develop a high-end, low-cost data acquisition system with virtually unlimited channel expansion capability, by careful design and implementation. This type of instrumentations helps in reducing noise emissions of existing and new airplanes.