Control of spatial impression by means of apparent source width

The auditory perception of space provides us with information about our surroundings and helps us to navigate in our everyday environment. Our spatial hearing sense also provides us with an immersed experience in “surround-sound” movie theaters and concert halls. One important auditory sensation is apparent source width (ASW), which describes the perceived width of a sound source or the perceived spaciousness of a sound in rooms or enclosures in general. Recent findings show that temporal fluctuations of binaural cues (in particular interaural time differences, ITDs) are an important factor for the perception of ASW.

This project therefore aims at controlling the statistical distribution of such binaural cues directly at the ears of the listener in order to target a desired auditory experience. This will be realized in natural listening scenarios, such as a living room, for different groups of listeners, including normal-hearing, hearing-impaired, and aided impaired listeners. The outcome of this project is a robust control setup of binaural cues that takes the individual listener into account. The results are highly relevant for signal processing evaluation and control in hearing instruments, audio signal processing and room acoustic applications.

Read the report here

Project participants:
Widex A/S
Bang & Olufsen A/S

For more information, contact Project Leader:
Professor Torsten Dau
Technical University of Denmark, Electrical Engineering