Airborne sound - Revision history

92.98.108.134 at 18:03, 30 May 2022

2022-05-30T18:03:39Z

← Older revision		Revision as of 18:03, 30 May 2022
Line 12:		Line 12:
	This is as opposed to structure-borne sound that results from an impact on or a continuous vibration against a part of a building fabric resulting in sound being radiated from an adjacent vibrating surface. An example of structure-borne sound is footsteps of a floor being heard in a room below.		This is as opposed to structure-borne sound that results from an impact on or a continuous vibration against a part of a building fabric resulting in sound being radiated from an adjacent vibrating surface. An example of structure-borne sound is footsteps of a floor being heard in a room below.

−	Whilst they are sometimes considered to be separate phenomena, airborne and structure-borne sound are related, in that airborne sound can cause structure-borne sound and vice versa. Airborne sound may cause an element of the building fabric to vibrate when it ~~comes into contact with~~ a surface, and structural vibrations may radiate from a surface, generating airborne sound.	+	Whilst they are sometimes considered to be separate phenomena, airborne and structure-borne sound are related, in that airborne sound can cause structure-borne sound and vice versa. Airborne sound may cause an element of the building fabric to vibrate when it encounters a surface, and structural vibrations may radiate from a surface, generating airborne sound.

−	Poor detailing or poor standards of workmanship can result in airborne sound transmitting directly between spaces, for example through gaps around the edge of doors, and may result in flanking sound, where sound travels around a separating element, even though the element itself might provide ~~very~~ good acoustic insulation. Even ~~very~~ small gaps can cause a significant increase in the transmission of airborne sound.	+	Poor detailing or poor standards of workmanship can result in airborne sound transmitting directly between spaces, for example through gaps around the edge of doors, and may result in flanking sound, where sound travels around a separating element, even though the element itself might provide exceptionally good acoustic insulation. Even exceedingly small gaps can cause a significant increase in the transmission of airborne sound.

−	Problems can also occur where doors, windows or other openings face onto ‘noisy’ spaces, such as a circulation space, a busy road or a school playground. If this deters occupants from leaving elements of the building open, this can affect the performance of natural ventilation strategies.	+	Problems can also occur where doors, windows, or other openings face onto ‘noisy’ spaces, such as a circulation space, a busy road, or a school playground. If this deters occupants from leaving elements of the building open, this can affect the performance of natural ventilation strategies.

	The amount of airborne sound in a space can be reduced by acoustic absorption, which reduces the amount of sound reflecting back into the space from the surfaces enclosing it, by acoustic insulation which reduces the amount or sound transmitting into the space from an adjacent space through the building fabric and by the elimination of gaps that might permit direct transmission.		The amount of airborne sound in a space can be reduced by acoustic absorption, which reduces the amount of sound reflecting back into the space from the surfaces enclosing it, by acoustic insulation which reduces the amount or sound transmitting into the space from an adjacent space through the building fabric and by the elimination of gaps that might permit direct transmission.

Editor at 11:58, 12 March 2021

2021-03-12T11:58:11Z

← Older revision		Revision as of 11:58, 12 March 2021
Line 47:		Line 47:
	* Sound v noise.		* Sound v noise.
	* Structure-borne sound.		* Structure-borne sound.
		+	* Suitable insulation can help preserve the golden sound of silence.

	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:Theory]]		[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:Theory]]

Designing Buildings at 11:51, 15 September 2020

2020-09-15T11:51:35Z

← Older revision		Revision as of 11:51, 15 September 2020
Line 48:		Line 48:
	* Structure-borne sound.		* Structure-borne sound.

−	[[Category:Theory]]	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:Theory]]

Editor at 13:52, 26 June 2020

2020-06-26T13:52:34Z

← Older revision		Revision as of 13:52, 26 June 2020
Line 26:		Line 26:
	= Related articles on Designing Buildings Wiki =		= Related articles on Designing Buildings Wiki =

		+	* Acoustics in the workplace.
	* Approved Document E.		* Approved Document E.
	* Audio frequency.		* Audio frequency.

Editor at 16:17, 20 May 2020

2020-05-20T16:17:36Z

← Older revision		Revision as of 16:17, 20 May 2020
Line 38:		Line 38:
	* Reverberation time.		* Reverberation time.
	* Robust details certification scheme.		* Robust details certification scheme.
		+	* Room acoustics.
	* Sound absorption.		* Sound absorption.
	* Sound frequency.		* Sound frequency.

Editor at 12:01, 16 December 2019

2019-12-16T12:01:34Z

← Older revision		Revision as of 12:01, 16 December 2019
Line 41:		Line 41:
	* Sound frequency.		* Sound frequency.
	* Sound insulation.		* Sound insulation.
		+	* Sound power.
	* Sound reduction index (SRI).		* Sound reduction index (SRI).
	* Sound v noise.		* Sound v noise.

Designing Buildings at 13:40, 8 May 2019

2019-05-08T13:40:27Z

← Older revision		Revision as of 13:40, 8 May 2019
Line 1:		Line 1:
−	~~To help develop this article, click ‘Edit this article’ above.~~
−
−	~~-----~~
	Sound is caused by vibrations which transmit through a medium and reach the ear or some other form of detecting device. Sound is measured in loudness (decibels (dB)) and [[Audio_frequency\|frequency]] (Hertz (Hz)).		Sound is caused by vibrations which transmit through a medium and reach the ear or some other form of detecting device. Sound is measured in loudness (decibels (dB)) and [[Audio_frequency\|frequency]] (Hertz (Hz)).

Line 27:		Line 24:
	Building Regulations Approved Document E - 'Resistance to the passage of sound' sets minimum standards for airborne sound insulation.		Building Regulations Approved Document E - 'Resistance to the passage of sound' sets minimum standards for airborne sound insulation.

−	~~= Find out more =~~	+	= Related articles on Designing Buildings Wiki =
−		+
−	=== Related articles on Designing Buildings Wiki ===	+

	* Approved Document E.		* Approved Document E.
Line 39:		Line 34:
	* Flanking sound.		* Flanking sound.
	* Noise nuisance.		* Noise nuisance.
		+	* Part E compliance.
	* Pre-completion sound testing.		* Pre-completion sound testing.
	* Reverberation time.		* Reverberation time.

Editor at 16:51, 12 April 2018

2018-04-12T16:51:49Z

← Older revision		Revision as of 16:51, 12 April 2018
Line 45:		Line 45:
	* Sound frequency.		* Sound frequency.
	* Sound insulation.		* Sound insulation.
		+	* Sound reduction index (SRI).
	* Sound v noise.		* Sound v noise.
	* Structure-borne sound.		* Structure-borne sound.

	[[Category:Theory]]		[[Category:Theory]]

Editor at 14:05, 27 March 2017

2017-03-27T14:05:23Z

← Older revision		Revision as of 14:05, 27 March 2017
Line 2:		Line 2:

	-----		-----
−	Sound is caused by vibrations which transmit through a medium and reach the ear or some other form of detecting device. Sound is measured in loudness (decibels (dB)) and frequency (Hertz (Hz)).	+	Sound is caused by vibrations which transmit through a medium and reach the ear or some other form of detecting device. Sound is measured in loudness (decibels (dB)) and [[Audio_frequency\|frequency]] (Hertz (Hz)).

	Airborne sound (or airborne noise) is sound that is transmitted through the air.		Airborne sound (or airborne noise) is sound that is transmitted through the air.
Line 32:		Line 32:

	* Approved Document E.		* Approved Document E.
		+	* Audio frequency.
	* Building acoustics.		* Building acoustics.
	* Building Bulletin 93: acoustic design of schools.		* Building Bulletin 93: acoustic design of schools.

Designing Buildings at 11:25, 8 March 2017

2017-03-08T11:25:15Z

← Older revision		Revision as of 11:25, 8 March 2017
Line 38:		Line 38:
	* Flanking sound.		* Flanking sound.
	* Noise nuisance.		* Noise nuisance.
		+	* Pre-completion sound testing.
	* Reverberation time.		* Reverberation time.
	* Robust details certification scheme.		* Robust details certification scheme.