An investigation of the characteristics of impact sound sources for impact sound insulation measurement

Document identifier: oai:DiVA.org:ltu-7785
Access full text here:10.1016/S0003-682X(96)00071-0
Keyword: Engineering and Technology, Mechanical Engineering, Fluid Mechanics and Acoustics, Teknik och teknologier, Maskinteknik, Strömningsmekanik och akustik, Teknisk akustik, Engineering Acoustics
Publication year: 1997
Relevant Sustainable Development Goals (SDGs):

The SDG label(s) above have been assigned by OSDG.ai

Abstract:

At the assessment of the impact sound insulation of a construction, a standard tapping machine is used as sound source. However, the current standard tapping machine has been criticised especially for measurement of wooden joist floors since the sounds generated by a tapping machine differ from those generated by actual footfall. This study has investigated the waveform and frequency spectra of human footfall (walking, running and jumping), of sand balls, sand bags and dropped tires, and of the standard tapping machine. It is shown that the frequency spectra differ between the standard tapping machine and actual footfall, especially at low frequencies. Results from other excitation sources such as a sand ball falling from a certain height showed concordance with actual footfall. This means that a sand ball drop as an impact source provides a better representation of actual human footfall than the standard tapping machine.

Authors

Wanqing Shi

Luleå tekniska universitet
Other publications >>

Carin Johansson

Luleå tekniska universitet
Other publications >>

Ulrik Sundbäck

Luleå tekniska universitet
Other publications >>

Record metadata

Click to view metadata

	
    header: 
        identifier: oai:DiVA.org:ltu-7785
        datestamp: 2021-04-19T13:01:26Z
        setSpec: SwePub-ltu
    metadata: 
        mods: 
            @attributes: 
                version: 3.7
            recordInfo: 
                recordContentSource: ltu
                recordCreationDate: 2016-09-29
            identifier: 
                http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-7785
                10.1016/S0003-682X(96)00071-0
                63590f20-6fe0-11db-962b-000ea68e967b
            titleInfo: 
                @attributes: 
                    lang: eng
                title: An investigation of the characteristics of impact sound sources for impact sound insulation measurement
            abstract: 
At the assessment of the impact sound insulation of a construction a standard tapping machine is used as sound source. However the current standard tapping machine has been criticised especially for measurement of wooden joist floors since the sounds generated by a tapping machine differ from those generated by actual footfall. This study has investigated the waveform and frequency spectra of human footfall (walking running and jumping) of sand balls sand bags and dropped tires and of the standard tapping machine. It is shown that the frequency spectra differ between the standard tapping machine and actual footfall especially at low frequencies. Results from other excitation sources such as a sand ball falling from a certain height showed concordance with actual footfall. This means that a sand ball drop as an impact source provides a better representation of actual human footfall than the standard tapping machine.

            subject: 
                    @attributes: 
                        lang: eng
                        authority: uka.se
                    topic: 
                        Engineering and Technology
                        Mechanical Engineering
                        Fluid Mechanics and Acoustics
                    @attributes: 
                        lang: swe
                        authority: uka.se
                    topic: 
                        Teknik och teknologier
                        Maskinteknik
                        Strömningsmekanik och akustik
                    @attributes: 
                        lang: swe
                        authority: ltu
                    topic: Teknisk akustik
                    genre: Research subject
                    @attributes: 
                        lang: eng
                        authority: ltu
                    topic: Engineering Acoustics
                    genre: Research subject
            language: 
                languageTerm: eng
            genre: 
                publication/journal-article
                ref
            note: 
                Published
                3
                Godkänd; 1997; 20060926 (biem)
            name: 
                    @attributes: 
                        type: personal
                    namePart: 
                        Shi
                        Wanqing
                    role: 
                        roleTerm: aut
                    affiliation: Luleå tekniska universitet
                    @attributes: 
                        type: personal
                    namePart: 
                        Johansson
                        Carin
                    role: 
                        roleTerm: aut
                    affiliation: Luleå tekniska universitet
                    @attributes: 
                        type: personal
                    namePart: 
                        Sundbäck
                        Ulrik
                    role: 
                        roleTerm: aut
                    affiliation: Luleå tekniska universitet
            originInfo: 
                dateIssued: 1997
            relatedItem: 
                @attributes: 
                    type: host
                titleInfo: 
                    title: Applied Acoustics
                identifier: 
                    0003-682X
                    1872-910X
                part: 
                    detail: 
                            @attributes: 
                                type: volume
                            number: 51
                            @attributes: 
                                type: issue
                            number: 1
                    extent: 
                        start: 85
                        end: 108
            physicalDescription: 
                form: print
            typeOfResource: text