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

Martin Bo Moller; Jesper Kjaer Nielsen; Efren Fernandez Grande; Soren Krarup Olesen

doi:10.1109/SAM.2018.8448689

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

Martin Bo Moller
, Jesper Kjaer Nielsen
, Efren Fernandez Grande
, Soren Krarup Olesen

Aalborg University
Bang & Olufsen A/S

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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Abstract

Controlling the sound field in a room with loudspeakers, 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 measurements. Additionally, the effect of Tikhonov regularization based on the estimated noise in the transfer functions is examined.

Original language	English
Title of host publication	Proceedings of 2018 IEEE 10th Sensor Array and Multichannel Signal Processing Workshop
Publisher	IEEE
Publication date	2018
Pages	331-335
DOIs	https://doi.org/10.1109/SAM.2018.8448689
Publication status	Published - 2018
Event	2018 IEEE 10th Sensor Array and Multichannel Signal Processing Workshop - The Diamond, Sheffield, United Kingdom Duration: 8 Jul 2018 → 11 Jul 2018 Conference number: 10 https://ieeexplore.ieee.org/xpl/conhome/8424836/proceeding

Conference

Conference	2018 IEEE 10th Sensor Array and Multichannel Signal Processing Workshop
Number	10
Location	The Diamond
Country/Territory	United Kingdom
City	Sheffield
Period	08/07/2018 → 11/07/2018
Internet address	https://ieeexplore.ieee.org/xpl/conhome/8424836/proceeding

Keywords

Sound Zones
Sound Field Control

Access to Document

10.1109/SAM.2018.8448689

2018 05 19 SAM paper Final Submission Martin Jesper Efren SoerenAccepted author manuscript, 270 KB

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@inproceedings{9caadeff5ca14a4b94111814e43dfb28,

title = "On the Influence of Transfer Function Noise on Low Frequency Pressure Matching for Sound Zones",

abstract = "Controlling the sound field in a room with loudspeakers, 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 measurements. Additionally, the effect of Tikhonov regularization based on the estimated noise in the transfer functions is examined.",

keywords = "Sound Zones, Sound Field Control",

author = "\{Bo Moller\}, Martin and \{Kjaer Nielsen\}, Jesper and \{Fernandez Grande\}, Efren and \{Krarup Olesen\}, Soren",

year = "2018",

doi = "10.1109/SAM.2018.8448689",

language = "English",

pages = "331--335",

booktitle = "Proceedings of 2018 IEEE 10th Sensor Array and Multichannel Signal Processing Workshop",

publisher = "IEEE",

address = "United States",

note = "2018 IEEE 10th Sensor Array and Multichannel Signal Processing Workshop, SAM 2018 ; Conference date: 08-07-2018 Through 11-07-2018",

url = "https://ieeexplore.ieee.org/xpl/conhome/8424836/proceeding",

}

Bo Moller, M, Kjaer Nielsen, J, Fernandez Grande, E & Krarup Olesen, S 2018, On the Influence of Transfer Function Noise on Low Frequency Pressure Matching for Sound Zones. in Proceedings of 2018 IEEE 10th Sensor Array and Multichannel Signal Processing Workshop. IEEE, pp. 331-335, 2018 IEEE 10th Sensor Array and Multichannel Signal Processing Workshop, Sheffield, United Kingdom, 08/07/2018. https://doi.org/10.1109/SAM.2018.8448689

On the Influence of Transfer Function Noise on Low Frequency Pressure Matching for Sound Zones. / Bo Moller, Martin; Kjaer Nielsen, Jesper; Fernandez Grande, Efren et al.
Proceedings of 2018 IEEE 10th Sensor Array and Multichannel Signal Processing Workshop. IEEE, 2018. p. 331-335.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

TY - GEN

T1 - On the Influence of Transfer Function Noise on Low Frequency Pressure Matching for Sound Zones

AU - Bo Moller, Martin

AU - Kjaer Nielsen, Jesper

AU - Fernandez Grande, Efren

AU - Krarup Olesen, Soren

N1 - Conference code: 10

PY - 2018

Y1 - 2018

N2 - Controlling the sound field in a room with loudspeakers, 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 measurements. Additionally, the effect of Tikhonov regularization based on the estimated noise in the transfer functions is examined.

AB - Controlling the sound field in a room with loudspeakers, 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 measurements. Additionally, the effect of Tikhonov regularization based on the estimated noise in the transfer functions is examined.

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KW - Sound Field Control

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DO - 10.1109/SAM.2018.8448689

M3 - Article in proceedings

SP - 331

EP - 335

BT - Proceedings of 2018 IEEE 10th Sensor Array and Multichannel Signal Processing Workshop

PB - IEEE

T2 - 2018 IEEE 10th Sensor Array and Multichannel Signal Processing Workshop

Y2 - 8 July 2018 through 11 July 2018

ER -

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

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Keywords

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