Flutter Echo Modeling

Gloria Dal Santo; Karolina Prawda; Vesa Välimäki

Flutter Echo Modeling

Gloria Dal Santo^*, Karolina Prawda, Vesa Välimäki

^*Tämän työn vastaava kirjoittaja

Audio Signal Processing

Ecole Polytechnique Federale de Lausanne

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussa › Conference article in proceedings › Scientific › vertaisarvioitu

105 Lataukset (Pure)

Abstrakti

Flutter echo is a well-known acoustic phenomenon that occurs when sound waves bounce between two parallel reflective surfaces, creating a repetitive sound. In this work, we introduce a method to recreate flutter echo as an audio effect. The proposed algorithm is based on a feedback structure utilizing velvet noise that aims to synthesize the fluttery components of a reference room impulse response presenting flutter echo. Among these, the repetition time defines the length of the delay line in a feedback filter. The specific spectral properties of the flutter are obtained with a bandpass attenuation filter and a ripple filter, which enhances the harmonic behavior of the sound. Additional temporal shaping of a velvet-noise filter, which processes the output of the feedback loop, is performed based on the properties of the reference flutter. The comparison between synthetic and measured flutter echo impulse responses shows good agreement in terms of both the repetition time and reverberation time values.

Alkuperäiskieli	Englanti
Otsikko	Proceedings of the 25th International Conference on Digital Audio Effects (DAFx20in22)
Julkaisupaikka	Vienna, Austria
Kustantaja	Universität für Musik und darstellende Kunst Wien
Sivut	185-191
Sivumäärä	7
ISBN (painettu)	978-3-200-08599-2
Tila	Julkaistu - 6 syysk. 2022
OKM-julkaisutyyppi	A4 Artikkeli konferenssijulkaisussa
Tapahtuma	International Conference on Digital Audio Effects - University of Music and Performing Arts Vienna, Vienna, Itävalta Kesto: 7 syysk. 2022 → 9 syysk. 2022 Konferenssinumero: 25 https://dafx2020.mdw.ac.at/DAFx20in22/ https://dafx2020.mdw.ac.at/DAFx20in22/index.html

Julkaisusarja

Nimi	Proceedings of the International Conference on Digital Audio Effects
ISSN (painettu)	2413-6700
ISSN (elektroninen)	2413-6689

Conference

Conference	International Conference on Digital Audio Effects
Lyhennettä	DAFx
Maa/Alue	Itävalta
Kaupunki	Vienna
Ajanjakso	07/09/2022 → 09/09/2022
www-osoite	https://dafx2020.mdw.ac.at/DAFx20in22/ https://dafx2020.mdw.ac.at/DAFx20in22/index.html

Pääsy asiakirjaan

DAFx20in22_paper_27Final published version, 1,51 MBLisenssi: CC BY

https://dafx2020.mdw.ac.at/proceedings/papers/DAFx20in22_paper_27.pdfLisenssi: CC BY

NordicSMC: Nordic Sound and Music Computing Network
Välimäki, V. (Vastuullinen tutkija)
01/01/2018 → 31/12/2023
Projekti: Other external funding: Other foreign funding

Akustiikan laboratorio
Pulkki, V. (Manager)
Sähkötekniikan korkeakoulu
Laitteistot/tilat: Facility

Siteeraa tätä

Dal Santo, G., Prawda, K., & Välimäki, V. (2022). Flutter Echo Modeling. teoksessa Proceedings of the 25th International Conference on Digital Audio Effects (DAFx20in22) (Sivut 185-191). Artikkeli 27 (Proceedings of the International Conference on Digital Audio Effects). Universität für Musik und darstellende Kunst Wien. https://dafx2020.mdw.ac.at/proceedings/papers/DAFx20in22_paper_27.pdf

@inproceedings{333edfc61252443ea44d8712943f1582,

title = "Flutter Echo Modeling",

abstract = "Flutter echo is a well-known acoustic phenomenon that occurs when sound waves bounce between two parallel reflective surfaces, creating a repetitive sound. In this work, we introduce a method to recreate flutter echo as an audio effect. The proposed algorithm is based on a feedback structure utilizing velvet noise that aims to synthesize the fluttery components of a reference room impulse response presenting flutter echo. Among these, the repetition time defines the length of the delay line in a feedback filter. The specific spectral properties of the flutter are obtained with a bandpass attenuation filter and a ripple filter, which enhances the harmonic behavior of the sound. Additional temporal shaping of a velvet-noise filter, which processes the output of the feedback loop, is performed based on the properties of the reference flutter. The comparison between synthetic and measured flutter echo impulse responses shows good agreement in terms of both the repetition time and reverberation time values.",

keywords = "audio signal processing, digital filter, artificial reverberation, reverb algorithm, flutter echo",

author = "{Dal Santo}, Gloria and Karolina Prawda and Vesa V{\"a}lim{\"a}ki",

year = "2022",

month = sep,

day = "6",

language = "English",

isbn = "978-3-200-08599-2",

series = "Proceedings of the International Conference on Digital Audio Effects",

publisher = "Universit{\"a}t f{\"u}r Musik und darstellende Kunst Wien",

pages = "185--191",

booktitle = "Proceedings of the 25th International Conference on Digital Audio Effects (DAFx20in22)",

address = "Austria",

note = "International Conference on Digital Audio Effects, DAFx ; Conference date: 07-09-2022 Through 09-09-2022",

url = "https://dafx2020.mdw.ac.at/DAFx20in22/, https://dafx2020.mdw.ac.at/DAFx20in22/index.html",

}

Dal Santo, G , Prawda, K & Välimäki, V 2022, Flutter Echo Modeling. julkaisussa Proceedings of the 25th International Conference on Digital Audio Effects (DAFx20in22)., 27, Proceedings of the International Conference on Digital Audio Effects, Universität für Musik und darstellende Kunst Wien, Vienna, Austria, Sivut 185-191, International Conference on Digital Audio Effects, Vienna, Itävalta, 07/09/2022. <https://dafx2020.mdw.ac.at/proceedings/papers/DAFx20in22_paper_27.pdf>

Flutter Echo Modeling. / Dal Santo, Gloria ; Prawda, Karolina ; Välimäki, Vesa.
Proceedings of the 25th International Conference on Digital Audio Effects (DAFx20in22). Vienna, Austria: Universität für Musik und darstellende Kunst Wien, 2022. s. 185-191 27 (Proceedings of the International Conference on Digital Audio Effects).

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussa › Conference article in proceedings › Scientific › vertaisarvioitu

TY - GEN

T1 - Flutter Echo Modeling

AU - Dal Santo, Gloria

AU - Prawda, Karolina

AU - Välimäki, Vesa

N1 - Conference code: 25

PY - 2022/9/6

Y1 - 2022/9/6

N2 - Flutter echo is a well-known acoustic phenomenon that occurs when sound waves bounce between two parallel reflective surfaces, creating a repetitive sound. In this work, we introduce a method to recreate flutter echo as an audio effect. The proposed algorithm is based on a feedback structure utilizing velvet noise that aims to synthesize the fluttery components of a reference room impulse response presenting flutter echo. Among these, the repetition time defines the length of the delay line in a feedback filter. The specific spectral properties of the flutter are obtained with a bandpass attenuation filter and a ripple filter, which enhances the harmonic behavior of the sound. Additional temporal shaping of a velvet-noise filter, which processes the output of the feedback loop, is performed based on the properties of the reference flutter. The comparison between synthetic and measured flutter echo impulse responses shows good agreement in terms of both the repetition time and reverberation time values.

AB - Flutter echo is a well-known acoustic phenomenon that occurs when sound waves bounce between two parallel reflective surfaces, creating a repetitive sound. In this work, we introduce a method to recreate flutter echo as an audio effect. The proposed algorithm is based on a feedback structure utilizing velvet noise that aims to synthesize the fluttery components of a reference room impulse response presenting flutter echo. Among these, the repetition time defines the length of the delay line in a feedback filter. The specific spectral properties of the flutter are obtained with a bandpass attenuation filter and a ripple filter, which enhances the harmonic behavior of the sound. Additional temporal shaping of a velvet-noise filter, which processes the output of the feedback loop, is performed based on the properties of the reference flutter. The comparison between synthetic and measured flutter echo impulse responses shows good agreement in terms of both the repetition time and reverberation time values.

KW - audio signal processing

KW - digital filter

KW - artificial reverberation

KW - reverb algorithm

KW - flutter echo

M3 - Conference article in proceedings

SN - 978-3-200-08599-2

T3 - Proceedings of the International Conference on Digital Audio Effects

SP - 185

EP - 191

BT - Proceedings of the 25th International Conference on Digital Audio Effects (DAFx20in22)

PB - Universität für Musik und darstellende Kunst Wien

CY - Vienna, Austria

T2 - International Conference on Digital Audio Effects

Y2 - 7 September 2022 through 9 September 2022

ER -

Flutter Echo Modeling

Abstrakti

Julkaisusarja

Conference

Pääsy asiakirjaan

Sormenjälki

Projektit

NordicSMC: Nordic Sound and Music Computing Network

Laitteet

Akustiikan laboratorio

Siteeraa tätä