RNC & ENC in a van

Project description

Installation of a road noise cancellation system to the Volkswagen van that can be tested and can be demonstrated to customers of NXP. This is achieved through setting up sensors and actuators such as accelerometers, microphones, (sub) woofers, speakers and more to the inside and outside of the van. Then they need to be calibrated, and data can be logged to be sent to Goodix to test out the road noise cancellation algorithm.

The system aims to reduce cabin noise by cancelling engine and road noise. This will be achieved using sensors such as microphones, accelerometers, and an RPM meter. The data will be processed inside a DSP box, and noise-cancelling sound waves will be played through multiple amplifiers, (OEM) speakers, and a subwoofer.

Context

NXP wants to create a demo car for noise cancellation in collaboration with Goodix and students from Fontys ICT. NXP and Goodix will provide the hardware, software, and a Volkswagen Transporter van for the project. The Fontys students will modify the vehicle, install all necessary hardware, and later test and calibrate the system.

Results

Most of hardware is installed and tested. Unfortunately we didn't have time to test most of the noise cancelation systems because of time constraints.

We have learned about a lot of different systems in cars, communication protocols, signals, sensors and cables. We have spent a lot of time figuring out the correct place for accelerometers and subwoofer. We had to learn about acoustics to correctly handle speakers and microphones. We had to design and print 3D printed cases for some of the sensors which also was a completely new thing for us. Another completely new thing for us was making cables. We made a lot of different types of cables and connectors with many different tools. We have also learned about the basics of noise cancellation.