Frequency-Dependent Directional Feedback Delay Network
Alary, Benoit; Politis, Archontis (2020-05-04)
Alary, Benoit
Politis, Archontis
IEEE
04.05.2020
2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tuni-202006236195
https://urn.fi/URN:NBN:fi:tuni-202006236195
Kuvaus
Peer reviewed
Tiivistelmä
A recent publication introduced the Directional Feedback Delay Network, a parametric artificial reverberation algorithm capable of producing direction-dependent energy decay. This method extends the capabilities of Feedback Delay Networks by using multichannel delay-line groups and a spatial transform to produce direction-dependent reverberation in the Ambisonics domain. In this paper, we present a modified formulation of the Directional Feedback Delay Network method that allows both frequency-and direction-dependent reverberation. Multichannel delay-line groups are used to manipulate signals incident on a spherical grid through independent recursive signal paths, while an early reflection module gives a physically-motivated spatial distribution of input signals in the system. The overall number of delay lines is reduced from the previous formulation, and the design allows flexibility to favor a lower computational cost over accuracy.
Kokoelmat
- TUNICRIS-julkaisut [17052]