Abstract
The aerodynamics of the impact between two human hands in a hand-clap is examined, in particular in relation to the hand profile which may be either nearly complementary between the two hands, giving a nominally flat impact, or else domed so that there is a significant enclosed volume. It is shown that shock waves are generated in nearly all hand-claps, with the addition of a Helmholtz-type resonance in the case of domed impacts. As can be judged by simple listening, a flat clap produces broad-band sound that typically extends to about 10 kHz while the spectrum of a domed clap usually has a subsidiary maximum somewhere below 1 kHz and then declines with frequency more rapidly than does the flat clap.
| Original language | English |
|---|---|
| Pages (from-to) | 165-168 |
| Number of pages | 4 |
| Journal | Acoustics Australia |
| Volume | 41 |
| Issue number | 2 |
| Publication status | Published - Aug 2013 |
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Fletcher, N. H. (2013). Shock waves and the sound of a hand-clap - A simple model. Acoustics Australia, 41(2), 165-168.
Fletcher, Neville H. / Shock waves and the sound of a hand-clap - A simple model. In: Acoustics Australia. 2013 ; Vol. 41, No. 2. pp. 165-168.
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abstract = "The aerodynamics of the impact between two human hands in a hand-clap is examined, in particular in relation to the hand profile which may be either nearly complementary between the two hands, giving a nominally flat impact, or else domed so that there is a significant enclosed volume. It is shown that shock waves are generated in nearly all hand-claps, with the addition of a Helmholtz-type resonance in the case of domed impacts. As can be judged by simple listening, a flat clap produces broad-band sound that typically extends to about 10 kHz while the spectrum of a domed clap usually has a subsidiary maximum somewhere below 1 kHz and then declines with frequency more rapidly than does the flat clap.",
author = "Fletcher, {Neville H.}",
year = "2013",
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Fletcher, NH 2013, 'Shock waves and the sound of a hand-clap - A simple model', Acoustics Australia, vol. 41, no. 2, pp. 165-168.
Shock waves and the sound of a hand-clap - A simple model. / Fletcher, Neville H.
In: Acoustics Australia, Vol. 41, No. 2, 08.2013, p. 165-168.
Research output: Contribution to journal › Article › peer-review
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AB - The aerodynamics of the impact between two human hands in a hand-clap is examined, in particular in relation to the hand profile which may be either nearly complementary between the two hands, giving a nominally flat impact, or else domed so that there is a significant enclosed volume. It is shown that shock waves are generated in nearly all hand-claps, with the addition of a Helmholtz-type resonance in the case of domed impacts. As can be judged by simple listening, a flat clap produces broad-band sound that typically extends to about 10 kHz while the spectrum of a domed clap usually has a subsidiary maximum somewhere below 1 kHz and then declines with frequency more rapidly than does the flat clap.
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SN - 0814-6039
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Fletcher NH. Shock waves and the sound of a hand-clap - A simple model. Acoustics Australia. 2013 Aug;41(2):165-168.
