On the use of the Waterhouse correction

Seppo Uosukainen

Research output: Contribution to journalArticleScientificpeer-review

11 Citations (Scopus)

Abstract

The classical form of the Waterhouse correction, the purpose of which is to take account of the higher energy density near room boundaries, has been developed to an improved form, which is a function of room modal density.
The Waterhouse correction can be determined for each room by measuring or calculating its modal density. This is advantageous if the room is not a parallellepiped, in which case the accuracy of the classical form of the Waterhouse correction is worse. The improved form of the Waterhouse correction normally differs from the traditional one at third octave bands with center frequencies less than 100 Hz.
There is a tendency for some measurement methods in building acoustics to be used in an extended frequency range down to a third octave band with a center frequency of 50 Hz. With that kind of extended frequency range, the refinement of the Waterhouse correction has an obvious effect.
The Waterhouse correction of the receiving room should be subtracted from the result of traditional measurements of the sound reduction index. This is especially important if the results are compared with those of intensity measurements.
No Waterhouse correction is needed for the source room. The measurement of sound insulation by the intensity technique needs no Waterhouse corrections.
Original languageEnglish
Pages (from-to)223-230
JournalJournal of Sound and Vibration
Volume186
Issue number2
DOIs
Publication statusPublished - 1995
MoE publication typeA1 Journal article-refereed

Fingerprint

rooms
Sound insulation
octaves
acoustics
frequency ranges
Acoustics
Acoustic waves
insulation
tendencies
flux density

Cite this

Uosukainen, Seppo. / On the use of the Waterhouse correction. In: Journal of Sound and Vibration. 1995 ; Vol. 186, No. 2. pp. 223-230.
@article{517120ccebf646e3833d8355b4a6b1c2,
title = "On the use of the Waterhouse correction",
abstract = "The classical form of the Waterhouse correction, the purpose of which is to take account of the higher energy density near room boundaries, has been developed to an improved form, which is a function of room modal density. The Waterhouse correction can be determined for each room by measuring or calculating its modal density. This is advantageous if the room is not a parallellepiped, in which case the accuracy of the classical form of the Waterhouse correction is worse. The improved form of the Waterhouse correction normally differs from the traditional one at third octave bands with center frequencies less than 100 Hz. There is a tendency for some measurement methods in building acoustics to be used in an extended frequency range down to a third octave band with a center frequency of 50 Hz. With that kind of extended frequency range, the refinement of the Waterhouse correction has an obvious effect. The Waterhouse correction of the receiving room should be subtracted from the result of traditional measurements of the sound reduction index. This is especially important if the results are compared with those of intensity measurements. No Waterhouse correction is needed for the source room. The measurement of sound insulation by the intensity technique needs no Waterhouse corrections.",
author = "Seppo Uosukainen",
year = "1995",
doi = "10.1006/jsvi.1995.0445",
language = "English",
volume = "186",
pages = "223--230",
journal = "Journal of Sound and Vibration",
issn = "0022-460X",
publisher = "Elsevier",
number = "2",

}

On the use of the Waterhouse correction. / Uosukainen, Seppo.

In: Journal of Sound and Vibration, Vol. 186, No. 2, 1995, p. 223-230.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - On the use of the Waterhouse correction

AU - Uosukainen, Seppo

PY - 1995

Y1 - 1995

N2 - The classical form of the Waterhouse correction, the purpose of which is to take account of the higher energy density near room boundaries, has been developed to an improved form, which is a function of room modal density. The Waterhouse correction can be determined for each room by measuring or calculating its modal density. This is advantageous if the room is not a parallellepiped, in which case the accuracy of the classical form of the Waterhouse correction is worse. The improved form of the Waterhouse correction normally differs from the traditional one at third octave bands with center frequencies less than 100 Hz. There is a tendency for some measurement methods in building acoustics to be used in an extended frequency range down to a third octave band with a center frequency of 50 Hz. With that kind of extended frequency range, the refinement of the Waterhouse correction has an obvious effect. The Waterhouse correction of the receiving room should be subtracted from the result of traditional measurements of the sound reduction index. This is especially important if the results are compared with those of intensity measurements. No Waterhouse correction is needed for the source room. The measurement of sound insulation by the intensity technique needs no Waterhouse corrections.

AB - The classical form of the Waterhouse correction, the purpose of which is to take account of the higher energy density near room boundaries, has been developed to an improved form, which is a function of room modal density. The Waterhouse correction can be determined for each room by measuring or calculating its modal density. This is advantageous if the room is not a parallellepiped, in which case the accuracy of the classical form of the Waterhouse correction is worse. The improved form of the Waterhouse correction normally differs from the traditional one at third octave bands with center frequencies less than 100 Hz. There is a tendency for some measurement methods in building acoustics to be used in an extended frequency range down to a third octave band with a center frequency of 50 Hz. With that kind of extended frequency range, the refinement of the Waterhouse correction has an obvious effect. The Waterhouse correction of the receiving room should be subtracted from the result of traditional measurements of the sound reduction index. This is especially important if the results are compared with those of intensity measurements. No Waterhouse correction is needed for the source room. The measurement of sound insulation by the intensity technique needs no Waterhouse corrections.

U2 - 10.1006/jsvi.1995.0445

DO - 10.1006/jsvi.1995.0445

M3 - Article

VL - 186

SP - 223

EP - 230

JO - Journal of Sound and Vibration

JF - Journal of Sound and Vibration

SN - 0022-460X

IS - 2

ER -