Effects of near-field sources on ambisonics recording and playback

Raimundo Gonzalez Diaz; Archontis Politis; Tapio Lokki

Effects of near-field sources on ambisonics recording and playback

Raimundo Gonzalez Diaz^*
, Archontis Politis
, Tapio Lokki

^*Tämän työn vastaava kirjoittaja

Tampere University

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

2 Sitaatiot (Scopus)

Abstrakti

Ambisonic recording with spherical microphone arrays (SMAs) is based on a far-field assumption which determines how microphone signals are encoded into Ambisonic signals. In the presence of a near-field source, low-frequency distance-dependent boosts arise in SMAs in similar nature to proximity effects in far-field equalized directional microphones. In this study, the effects of near-field sources on Ambisonic signals are modelled analytically, their interaction with regularization stages is observed, and then traced further across to two basic ambisonic processing operations: virtual microphones, and binaural decoding.

Alkuperäiskieli	Englanti
Otsikko	151st Audio Engineering Society Convention 2021
Kustantaja	Curran Associates Inc.
Sivut	192 - 199
Sivumäärä	8
ISBN (painettu)	978-1-7138-3945-3
Tila	Julkaistu - 2021
OKM-julkaisutyyppi	A4 Artikkeli konferenssijulkaisussa
Tapahtuma	Audio Engineering Society Convention - Virtual, Online Kesto: 13 lokak. 2021 → 31 lokak. 2021 Konferenssinumero: 151 https://aesshow.com

Conference

Conference	Audio Engineering Society Convention
Lyhennettä	AES
Kaupunki	Virtual, Online
Ajanjakso	13/10/2021 → 31/10/2021
www-osoite	https://aesshow.com

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http://www.aes.org/e-lib/browse.cfm?elib=21490

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@inproceedings{ca1d83a0d7584396adc5e23116df7229,

title = "Effects of near-field sources on ambisonics recording and playback",

abstract = "Ambisonic recording with spherical microphone arrays (SMAs) is based on a far-field assumption which determines how microphone signals are encoded into Ambisonic signals. In the presence of a near-field source, low-frequency distance-dependent boosts arise in SMAs in similar nature to proximity effects in far-field equalized directional microphones. In this study, the effects of near-field sources on Ambisonic signals are modelled analytically, their interaction with regularization stages is observed, and then traced further across to two basic ambisonic processing operations: virtual microphones, and binaural decoding.",

keywords = "ambisonics, virtual acoustics, near-field, audio",

author = "\{Gonzalez Diaz\}, Raimundo and Archontis Politis and Tapio Lokki",

year = "2021",

language = "English",

isbn = "978-1-7138-3945-3",

pages = "192 -- 199",

booktitle = "151st Audio Engineering Society Convention 2021",

publisher = "Curran Associates Inc.",

address = "United States",

note = "Audio Engineering Society Convention, AES ; Conference date: 13-10-2021 Through 31-10-2021",

url = "https://aesshow.com",

}

TY - GEN

T1 - Effects of near-field sources on ambisonics recording and playback

AU - Gonzalez Diaz, Raimundo

AU - Politis, Archontis

AU - Lokki, Tapio

N1 - Conference code: 151

PY - 2021

Y1 - 2021

N2 - Ambisonic recording with spherical microphone arrays (SMAs) is based on a far-field assumption which determines how microphone signals are encoded into Ambisonic signals. In the presence of a near-field source, low-frequency distance-dependent boosts arise in SMAs in similar nature to proximity effects in far-field equalized directional microphones. In this study, the effects of near-field sources on Ambisonic signals are modelled analytically, their interaction with regularization stages is observed, and then traced further across to two basic ambisonic processing operations: virtual microphones, and binaural decoding.

AB - Ambisonic recording with spherical microphone arrays (SMAs) is based on a far-field assumption which determines how microphone signals are encoded into Ambisonic signals. In the presence of a near-field source, low-frequency distance-dependent boosts arise in SMAs in similar nature to proximity effects in far-field equalized directional microphones. In this study, the effects of near-field sources on Ambisonic signals are modelled analytically, their interaction with regularization stages is observed, and then traced further across to two basic ambisonic processing operations: virtual microphones, and binaural decoding.

KW - ambisonics

KW - virtual acoustics

KW - near-field

KW - audio

M3 - Conference article in proceedings

SN - 978-1-7138-3945-3

SP - 192

EP - 199

BT - 151st Audio Engineering Society Convention 2021

PB - Curran Associates Inc.

T2 - Audio Engineering Society Convention

Y2 - 13 October 2021 through 31 October 2021

ER -

Effects of near-field sources on ambisonics recording and playback

Abstrakti

Conference

YK:n kestävän kehityksen tavoitteet

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