Links
- Acustinet
- Bruël & Kjær
- EFCA European Federation of Engineering Consultancy Associations
- ENV: Noise steering group website - Implementing the Environmental Noise Directive
- Europa - Environment - Noise policy
- FIDIC International Federation of Consulting Engineers
- I-INCE The international institute of noise control engineering
- Impedance
- Nomeports
- Softnoise GmbH Joint venture of DGMR Software BV and Stapelfeldt Ingenieursgesellschaft mbH.
- VDI Verein Deutsche Ingenieure