Signal.
Perception.
Intelligence.

Scientific consulting and development at the intersection of digital signal processing, psychoacoustics, psychometrics, psychophysiology, and machine learning.

Scientifically rigorous, pragmatically applied

Profile ↘

PROF. DR. RUDOLF BISPING

 EXPERTISE

From complex data
to clear decisions.

Methodological depth meets application-focused development—for research groups, technology companies, and interdisciplinary R&D teams.

Digital Signal Processing

Analysis, filtering, and modelling of complex time series and sensor signals—from the methodological concept to a validated algorithm.

Time Series · Feature Extraction · DSP

Psychoacoustics

Objective and subjective assessment of auditory perception, and development of robust experimental and evaluation methods.

Auditory Perception · Sound Quality · Study Design

Psychometrics

Development and validation of measurement instruments, scaling models, and multivariate analyses for the reliable assessment of latent constructs.

Measurement Models · Scale Development · Validation

Psychophysiology

Acquisition, synchronisation, and analysis of physiological signals to quantify human responses, states, and underlying processes.

Biosignals · Multimodal Analysis · Biomarkers

Machine Learning

Transparent, data-driven models for classification, forecasting, and pattern recognition in research and development.

Modelling · Evaluation · Explainable AI

Documentation

Clear, reproducible documentation of methods, algorithms, and results—from technical specifications to scientific reports.

Technical Writing · Reproducibility · Reporting

 APPROACH

Precision in methodology.
Clarity in results.

Every project follows a transparent path from the research question to a verifiable solution.

Clarify the problem

Translate the research question, available data, and success criteria into a robust technical brief.

Develop the method

Select, implement, and transparently document the appropriate signal-processing, statistical, and machine-learning methods.

Validate the results

Systematically assess models and conclusions, then deliver clear, reproducible results.

PROJECTS

Selected research projects.

Four collaborative programmes connecting psychoacoustics, signal processing, human response and model-based validation.

BMBF · 09/2002–08/2006

Silent Traffic

Research Network “Quiet Traffic” · Subproject 2121
The project investigated how road and rail traffic noise—alone and in combination—affects annoyance, cognitive performance and speech communication, and how targeted acoustic changes can reduce those effects.

SASS contribution
Generation, digital modification and psychoacoustic classification of realistic traffic-noise scenarios for a multicentre laboratory ring trial with IfADo Dortmund and the Catholic University of Eichstätt-Ingolstadt. Reproducible 5.1-surround presentations linked acoustic features with subjective judgements.

Key findings
Loud road traffic impaired several cognitive tasks. Reducing low-frequency energy alleviated some effects on combined memory, planning and control functions, although results varied by task. The programme demonstrated why level values alone do not adequately describe the human impact of traffic noise.

Sound synthesis · Multicentre listening tests · Psychometrics · Signal analysis

BMBF / TIB final report ↗

EU FP6 · 02/2004–06/2007 · Grant 502865

SEFA

Sound Engineering for Aircraft
SEFA complemented conventional noise-level reduction with sound-quality criteria: which spectral, temporal and directional characteristics make aircraft flyovers more acceptable to communities?

Programme and methods
20 organisations, including EADS Deutschland as coordinator and 19 listed participants; €5.925 million total cost and €3.897 million EU contribution. The consortium recorded 238 take-offs and arrivals at three European airports using microphone arrays and binaural techniques. Spectral decomposition and non-linear filtering produced several hundred realistic synthetic sounds.

Results
Standardised psychometric tests ran in eight laboratories across seven countries. SEFA delivered a Virtual Aircraft and Virtual Listener, and aircraft-specific guidance for airframe, engine and flight-procedure design. SASS acoustic research & design GmbH is listed as an official consortium participant.

Aircraft noise · Target sounds · Sound synthesis · Virtual listener

CORDIS final report ↗

EU FP7 · 06/2009–03/2013 · Grant 234118

COSMA

Community Oriented Solutions to Minimise Aircraft Noise Annoyance
COSMA extended SEFA from single flyovers to complete airport scenarios, linking aircraft design and operating procedures to the response of neighbouring communities.

Programme and methods
21 beneficiaries in nine countries, coordinated by Airbus Defence and Space; €5.914 million total cost and €4.096 million EU contribution. Field and telephone studies at three airports were combined with home-like laboratory experiments, psychometrics, sound synthesis and multidisciplinary optimisation.

Results and SASS role
The project produced the Sound Synthesis Machine, Airport Noise Climate Synthesizer and Virtual Resident; the latter predicted ratings with correlations of about 0.7–0.8. SASS was a funded consortium partner and contributed aircraft-noise measurement, synthesis, auralisation and perceptual validation. Experiments also showed that fewer events can reduce overall annoyance even at a similar energy-equivalent level.

Airport scenarios · Auralisation · Annoyance modelling · Optimisation

CORDIS final report ↗

BMBF-funded research project · Germany

VIVID

Camera-based detection of driver fatigue
VIVID investigated how fatigue and decreasing vigilance can be detected reliably in the vehicle from camera-based observations of the driver.

Project consortium
Four project participants combined complementary expertise: SASS (Essen), psyrecon (Wuppertal), CanControls (Aachen) and Prof. Krajewski (Cologne).

Methods and validation
Visual fatigue indicators derived from in-vehicle camera data were examined against psychophysiological reference measures. The validation work connected observable behaviour with physiological changes in alertness to assess the robustness and practical suitability of the camera-based findings for driver monitoring.

Driver fatigue · Camera analytics · Psychophysiology · Validation

VIVID final report ↘

CONTACT

A complex question
deserves a clear conversation.

Are you planning a research, development, or analysis project? Tell me briefly what you are working on and what kind of support you are looking for. I will get back to you to discuss the research question, available data, and possible next steps.

✉  sass.consult@t-online.de
You can also include your preferred time for a phone call in the message.

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