On the Influence of Transfer Function Noise on Low Frequency Pressure Matching for Sound Zones

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

Abstract

Controlling the sound field in a room with loud-
speakers, requires information about how each loudspeaker
radiates sound to the regions of interest. This information can
be estimated by in-situ measurements of the transfer functions.
However, noise in the estimates can severely deteriorate how
well the sound field is controlled. Accurate transfer functions are
especially important for sound zones, which rely on destructive
interference between multiple loudspeakers. In the presented
study, transfer function measurements from eight 10” woofers
were repeated 30 times in a room. Pressure matching was used
to create sound zones between 20-300 Hz. The performance is
evaluated for individual and averaged transfer function measure-
ments. Additionally, the effect of Tikhonov regularization based
on the estimated noise in the transfer functions is examined.
Luk

Detaljer

Controlling the sound field in a room with loud-
speakers, requires information about how each loudspeaker
radiates sound to the regions of interest. This information can
be estimated by in-situ measurements of the transfer functions.
However, noise in the estimates can severely deteriorate how
well the sound field is controlled. Accurate transfer functions are
especially important for sound zones, which rely on destructive
interference between multiple loudspeakers. In the presented
study, transfer function measurements from eight 10” woofers
were repeated 30 times in a room. Pressure matching was used
to create sound zones between 20-300 Hz. The performance is
evaluated for individual and averaged transfer function measure-
ments. Additionally, the effect of Tikhonov regularization based
on the estimated noise in the transfer functions is examined.
OriginalsprogEngelsk
Titel2018 IEEE 10th Sensor Array and Multichannel Signal Processing Workshop (SAM)
Antal sider5
ForlagIEEE
Publikationsdato8 jul. 2018
Sider331-335
ISBN (Trykt)978-0-5386-4753-0
ISBN (Elektronisk)978-1-5386-4752-3
DOI
StatusUdgivet - 8 jul. 2018
PublikationsartForskning
Peer reviewJa
Begivenhed2018 IEEE 10th Sensor Array and Multichannel Signal Processing Workshop (SAM) - Sheffield, South Yorkshire, United Kingdom, United Kingdom, Sheffield, Storbritannien
Varighed: 8 jul. 201811 jul. 2018

Konference

Konference2018 IEEE 10th Sensor Array and Multichannel Signal Processing Workshop (SAM)
LokationSheffield, South Yorkshire, United Kingdom, United Kingdom
LandStorbritannien
BySheffield
Periode08/07/201811/07/2018
NavnI E E E Workshop on Sensor Array and Multichannel Signal Processing
ISSN1551-2282
ID: 286517968