Wolfel - IMMI
For more than 20 years, service providers, authorities and industrial companies have been relying on IMMI as one of the leading software tools in the field of immission control. IMMI is a software package for the calculation of sound propagation outdoors, noise exposure in workrooms and propagation of air pollutants.
The history of the IMMI prognosis software dates back to the early 1980s. The first commercially available IMMI software was launched in 1987 by Wölfel acoustic engineers – a technology company which has over 100 employees today.
In cooperation with other acoustic engineers and software manufacturers in Germany, the IMMI team has played an important role in the worldwide establishment of the quality standard of immission prognosis that is common today. As founding members of the standards committees for DIN 45687 and ISO 17534, they have made a major contribution to the quality standard that serious products in this field have to meet.
Knowledge Hub
In situ Acoustic Testing: Smarter Noise Control & Analysis in the Field
May 12, 2026
On Thursday 4th June at 11am, we’ll be hosting a live webinar with Jared Schmal from Microflown Technologies as the key speaker who will explore how in situ acoustic testing is changing how engineers tackle noise in real-world environments. From product development to field troubleshooting, understanding noise and where it…
A Breakdown of Our Vibration Monitoring Packs
May 8, 2026
When you’re planning a noise monitoring deployment, battery life, site access, and project duration all play a direct role in cost, risk, and practicality. That’s exactly why we’ve created our new vibration monitoring packs, giving you 3 levels of equipment and accessories, all in 3 easy to digest levels. The…
Scan&Paint 2D vs Scan&Paint 3D
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Acoustic troubleshooting and sound source localisation provide insights that traditional measurement techniques can struggle to deliver. This is why tools like Scan&Paint 2D and Scan&Paint 3D are becoming so popular in the engineering field. These tools allow engineers to transform acoustic data into clear visual sound maps, making it easier…
A Deep Dive into Scan&Paint 2D
April 15, 2026
NVH Engineers face acoustic challenges every day. This could be troubleshooting noise, optimising products or improving soundproofing. Identifying the true source of unwanted sound is rarely straightforward. Traditional acoustic measurements can tell you how loud something is, but they often struggle to clearly show where the noise is coming from.…