Active low frequency sound field control in a listening room using CABS (Controlled Acoustic Bass System) will also reduce the sound transmitted to neighbour rooms

Sofus Birkedal Nielsen, Adrian Celestinos

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

Resumé

Sound in rooms and transmission of sound between rooms gives the biggest problems at low frequencies. Rooms with rectangular boundaries have strong resonance frequencies and will give big spatial variations in sound pressure level (SPL) in the source room, and an increase in SPL of 20 dB at a wall is possible at modal frequencies. For that reason the modal frequencies in the source room will also have big impact on the transmission to neighbour rooms. These low frequency resonance frequencies are very audible in the source room but also in neighbour rooms as a booming bass. CABS (Controlled Acoustic Bass System) is a time based room correction system for reproduced sound using loudspeakers. The system can remove room modes at low frequencies, by active cancelling the reflection from at the rear wall to a normal stereo setup. Measurements in a source room using CABS and in two neighbour rooms have shown a reduction in sound transmission of up to 10 dB at resonance frequencies and a reduction at broadband noise of 3 – 5 dB at frequencies up to 100 Hz. The ideas and understanding of the CABS system will also be given.
OriginalsprogEngelsk
TitelProceedings of Low Frequency 2012
RedaktørerGeoff Leventhall
Antal sider15
ForlagMultiScience Publishing Co Ltd
Publikationsdato2012
Sider147-161
StatusUdgivet - 2012
BegivenhedLow Frequency 2012: 15th Conference on Low Frequency Noise - Stratford upon Avon, Storbritannien
Varighed: 22 maj 201224 maj 2012
Konferencens nummer: 15

Konference

KonferenceLow Frequency 2012
Nummer15
LandStorbritannien
ByStratford upon Avon
Periode22/05/201224/05/2012

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sound fields
rooms
low frequencies
acoustics
sound pressure
sound transmission
loudspeakers
broadband

Citer dette

Nielsen, S. B., & Celestinos, A. (2012). Active low frequency sound field control in a listening room using CABS (Controlled Acoustic Bass System) will also reduce the sound transmitted to neighbour rooms. I G. Leventhall (red.), Proceedings of Low Frequency 2012 (s. 147-161). MultiScience Publishing Co Ltd.
Nielsen, Sofus Birkedal ; Celestinos, Adrian. / Active low frequency sound field control in a listening room using CABS (Controlled Acoustic Bass System) will also reduce the sound transmitted to neighbour rooms. Proceedings of Low Frequency 2012. red. / Geoff Leventhall. MultiScience Publishing Co Ltd, 2012. s. 147-161
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title = "Active low frequency sound field control in a listening room using CABS (Controlled Acoustic Bass System) will also reduce the sound transmitted to neighbour rooms",
abstract = "Sound in rooms and transmission of sound between rooms gives the biggest problems at low frequencies. Rooms with rectangular boundaries have strong resonance frequencies and will give big spatial variations in sound pressure level (SPL) in the source room, and an increase in SPL of 20 dB at a wall is possible at modal frequencies. For that reason the modal frequencies in the source room will also have big impact on the transmission to neighbour rooms. These low frequency resonance frequencies are very audible in the source room but also in neighbour rooms as a booming bass. CABS (Controlled Acoustic Bass System) is a time based room correction system for reproduced sound using loudspeakers. The system can remove room modes at low frequencies, by active cancelling the reflection from at the rear wall to a normal stereo setup. Measurements in a source room using CABS and in two neighbour rooms have shown a reduction in sound transmission of up to 10 dB at resonance frequencies and a reduction at broadband noise of 3 – 5 dB at frequencies up to 100 Hz. The ideas and understanding of the CABS system will also be given.",
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Nielsen, SB & Celestinos, A 2012, Active low frequency sound field control in a listening room using CABS (Controlled Acoustic Bass System) will also reduce the sound transmitted to neighbour rooms. i G Leventhall (red.), Proceedings of Low Frequency 2012. MultiScience Publishing Co Ltd, s. 147-161, Stratford upon Avon, Storbritannien, 22/05/2012.

Active low frequency sound field control in a listening room using CABS (Controlled Acoustic Bass System) will also reduce the sound transmitted to neighbour rooms. / Nielsen, Sofus Birkedal; Celestinos, Adrian.

Proceedings of Low Frequency 2012. red. / Geoff Leventhall. MultiScience Publishing Co Ltd, 2012. s. 147-161.

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

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Nielsen SB, Celestinos A. Active low frequency sound field control in a listening room using CABS (Controlled Acoustic Bass System) will also reduce the sound transmitted to neighbour rooms. I Leventhall G, red., Proceedings of Low Frequency 2012. MultiScience Publishing Co Ltd. 2012. s. 147-161