Multichannel Interleaved Velvet Noise

Karolina Prawda*, Sebastian Schlecht, Vesa Välimäki

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference article in proceedingsScientificvertaisarvioitu

25 Lataukset (Pure)

Abstrakti

The cross-correlation of multichannel reverberation generated using interleaved velvet noise is studied. The interleaved velvet-noise reverberator was proposed recently for synthesizing the late reverb of an acoustic space. In addition to providing a computationally efficient structure and a perceptually smooth response, the interleaving method allows combining its independent branch outputs in different permutations, which are all equally smooth and flutter-free. For instance, a four-branch output can be combined in 4! or 24 ways. Additionally, each branch output set is mixed orthogonally, which increases the number of permutations from M! to M^2!, since sign inversions are taken along. Using specific matrices for this operation, which change the sign of velvet-noise sequences, decreases the correlation of some of the combinations. This paper shows that many selections of permutations offer a set of well decorrelated output channels, which produce a diffuse and colorless sound field, which is validated with spatial variation. The results of this work can be applied in the design of computationally efficient multichannel reverberators.
AlkuperäiskieliEnglanti
OtsikkoProceedings of the 25th International Conference on Digital Audio Effects (DAFx20in22)
ToimittajatGianpaolo Evangelista, Nicki Holighaus
JulkaisupaikkaVienna, Austria
KustantajaDAFx
Sivut208-215
Sivumäärä8
ISBN (painettu)978-3-200-08599-2
TilaJulkaistu - 8 syysk. 2022
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaInternational Conference on Digital Audio Effects - University of Music and Performing Arts Vienna, Vienna, Itävalta
Kesto: 7 syysk. 20229 syysk. 2022
Konferenssinumero: 25
https://dafx2020.mdw.ac.at/DAFx20in22/
https://dafx2020.mdw.ac.at/DAFx20in22/index.html

Conference

ConferenceInternational Conference on Digital Audio Effects
LyhennettäDAFx
Maa/AlueItävalta
KaupunkiVienna
Ajanjakso07/09/202209/09/2022
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