Our motivation

Our goal is to simplify complex, technical tasks in the daily work of our customers by using Augmented Reality. Thus, mistakes can be avoided and technologies can be continuously improved. This ultimately leads to an increase in the quality of products, protection of the environment and an improvement in the quality of life.

Elisabeth-Kunz I HoloMetrix GmbH

Elisabeth Kunz,
B. Sc.


Alexander-Pfaff I HoloMetrix GmbH

Alexander Pfaff, M. Eng.

Managing Director

Christopher-Morschel I HoloMetrix GmbH

Christopher Morschel,
B. Eng.


Alexander Pfaff is a mechanical engineer (M. Eng.) and managing director of HoloMetrix GmbH. He graduated from the Frankfurt University of Applied Sciences in 2016 with a major in vibration and acoustics. During his studies he already gained practical experience at Daimler AG. There, in the department “Supplier Management Commercial Vehicle Engine Assembly”, he took on tasks such as ensuring the quality of purchased parts, supervising quality campaigns and making complaints about purchased parts. During his master studies he completed several scientific projects at Continental AG in the Chassis & Safety Division NVH – Development. The focus was on the analysis of low-frequency brake noise, the commissioning of mobile frequency analyzers and experimental structural analyses (EMA, ODS and OMA). After his studies he worked as a research assistant at the Frankfurt University of Applied Sciences until 01/2020. In the context of this activity his fields of activity were contract research for the determination of sound power of large technical systems. In addition, he performed RDE measurements on commercial vehicles and taught practical NVH content in the laboratory. Since 2018 he is a member of the founding project ARA – Augmented Reality Acoustics, which became HoloMetrix GmbH in September 2020.

Mr. Alexander Pfaff also contributed to numerous publications. A selection of these publications is listed below:

  1. Publications 5th Edition: Brake Handbook (ISBN 978-3-658-15488-2), Chapter 28: Vibrations and Noise (Ed.: Bert Breuer Karlheinz H. Bill / Authors Chapter 28: Holger Marschner, Alexander Pfaff, Paul Leibolt and Giuseppe Maggi-Trovato), Springer Vieweg Verlag
  2. μ-Symposium (ISBN 978-3-18-380012-4), Investigation of the mechanisms of action of friction-excited stick-slip vibrations using the example of brake creaking and analogous vibration phenomena (authors: Marschner, Holger; Leibold, Paul; Pfaff, Alexander; Morschel, Christopher), Progress reports VDI: Series 12
  • 17 VR & AR Meetup “AR-based Acoustic Measurements” / Alexander Pfaff (2019)
  • Polytec User Conference “Acoustic measurements with Augmented Reality measurement technology of the future – a keynote lecture” (Prof. Marschner, A. Pfaff, C. Morschel, Frankfurt University of Applied Sciences) (2018)
  • Grazer Nutzfahrzeug Workshop (17.05. – 18.05.2018, Graz), „ From road sweeper machine to 35t-refuse collection vehicle – Potentials and challenges for electrically driven city cleaning vehicles” (Alexander Pfaff (FRA UAS), Holger Marschner (FRA UAS), Reinhold Schäfer(FES)) (2017)
  • EuroBrake 2017 Dresden “MOAN NOISE -THE PHENOMENON AND SOLUTION APPROACHES” (Bauer, Jens (Continental Division Chassis & Safety); Körner, Matthias (Volkswagen AG); Pfaff, Alexander (Frankfurt University of Applied Sciences)) (2017)

Our successes


On May 24, 2022, the HoloMetrix – Sound HUB was honored with the German Innovation Award in “Gold”. With this award, the German Design Council recognizes companies that impress in an outstanding way with new, forward-looking technologies, processes or services.

Startup Booster Logo

First place

In October 2019, the founding project ARA (as HoloMetrix GmbH was then still called) was awarded the Startup Booster Award of the city of Wiesbaden.

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From January to June 2019, the team of HoloMetrix GmbH passed through the HessenIdeen scholarship. Even today, the founders can still benefit from the large network that was created as a result. 

Applied Idea Logo

First place

The founding project was awarded the Applied Idea Award of the University of Applied Sciences in December 2018.

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Idea Accelerator 

From June 2019 to May 2020, the founding project ARA was a member of the Unibator of the Goethe University Frankfurt am Main and could benefit from the exchange with the other founding teams and the large mentoring network.

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start-up grant

From April 2020 to June 2021, the team of HoloMetrix GmbH (former name: ARA – Augmented Reality Acoustics) participated in the Exist start-up grant of the German Federal Ministry for Economic Affairs and Energy (BMWi).

Press and articles

   Link: daga21_proceedings

– Autoren: Holger Marschner, Alexander Pfaff, Jochen Krimm
– Erschienen im Tagungsband “Fortschritte der Akustik – DAGA 2021”

,,An Frankfurt UAS entstandenes Projekt „Augmented Reality Acoustics“ erhält EXIST-Gründerstipendium”
– Frederike Mannig | idw – Informationsdienst Wissenschaft
Link: https://idw-online.de/de/news748051