Room Reverberation Simulation using Parametrised Feedback Delay Networks

Student thesis: Master thesis (including HD thesis)

  • Daniel Strübig
4. Term, Sound and Music Computing (Master Programme)
Artificial reverberation synthesis describes filter structures that approximate room reverberation. Given a set of acoustic phenomena and parameters such as frequency absorption, reverberation time and room size, these reverberator structures emulate the given effects for early reflections and the diffuse reverberation tail. In this report, a real-time implementation of a reverberator structure is described, using delay lines and allpass filters for early reflections and a feedback delay network topology for the late reverberation tail. The output of the reverberator structure is compared against two commercially available reverberators. The results show a vast numerical difference in the system's impulse responses. Listening tests using the reverb signals in conjunction with the Unity® engine reveal that there is little perceptual difference across the reverberators. For future improvements, different test conditions and comparisons with more suitable frameworks are suggested.
Publication date4 Jun 2020
Number of pages50
External collaboratorJesper Udesen
Jesper Udesen
ID: 333624418