Re: Physics of the sound of footsteps (Andrea Valle )


Subject: Re: Physics of the sound of footsteps
From:    Andrea Valle  <andrea.valle@xxxxxxxx>
Date:    Wed, 22 Jan 2014 11:22:15 +0100
List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>

--Apple-Mail=_ABA5E836-FEE2-45F2-84A0-BE35D0201A71 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=iso-8859-1 you might be interested, maybe tangentially, into NW project: http://www.di.univr.it/?ent=3Dprogetto&id=3D2052 Best -a- -------------------------------------------------- Andrea Valle -------------------------------------------------- CIRMA - StudiUm Universit=E0 degli Studi di Torino --> http://www.cirma.unito.it/andrea/ --> http://www.fonurgia.unito.it/andrea/ --> http://www.flickr.com/photos/vanderaalle/sets/ --> http://vimeo.com/vanderaalle --> http://www.youtube.com/user/vanderaalle --> andrea.valle@xxxxxxxx -------------------------------------------------- "This is a very complicated case, Maude. You know, a lotta ins, a lotta = outs, a lotta what-have-yous."=20 (Jeffrey 'The Dude' Lebowski) On 22 Jan 2014, at 08:11, Pierre Divenyi <pdivenyi@xxxxxxxx> = wrote: > Linda, >=20 > Check the work by Leon van Noorden on precisely this question. >=20 > -Pierre >=20 > On 1/21/14, 8:45 AM, "Linda Seltzer" <lseltzer@xxxxxxxx> = wrote: >=20 >> When we walk, we can hear our footsteps, even if we are walking = barefoot >> on a soft surface. However, the number of steps per second in = walking is >> below the auditory range. What is it about the impact with the = ground >> that causes the auditory signal? Are there papers on the acoustics = of a >> footstep? >>=20 >> Thank you for any information. >>=20 >> Linda Seltzer >=20 --Apple-Mail=_ABA5E836-FEE2-45F2-84A0-BE35D0201A71 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=iso-8859-1 <html><head><meta http-equiv=3D"Content-Type" content=3D"text/html = charset=3Diso-8859-1"></head><body style=3D"word-wrap: break-word; = -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">you = might be interested, maybe tangentially, into NW = project:<div><br><div><a = href=3D"http://www.di.univr.it/?ent=3Dprogetto&amp;id=3D2052">http://www.d= i.univr.it/?ent=3Dprogetto&amp;id=3D2052</a></div><div><br></div><div>Best= </div><div>-a-</div><div><br><div apple-content-edited=3D"true"> <span class=3D"Apple-style-span" style=3D"border-collapse: separate; = border-spacing: 0px;"><span class=3D"Apple-style-span" = style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: = Helvetica; font-style: normal; font-variant: normal; font-weight: = normal; letter-spacing: normal; line-height: normal; orphans: 2; = text-align: -webkit-auto; text-indent: 0px; text-transform: none; = white-space: normal; widows: 2; word-spacing: 0px; = -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: = 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: = auto; -webkit-text-stroke-width: 0px; "><div style=3D"word-wrap: = break-word; -webkit-nbsp-mode: space; -webkit-line-break: = after-white-space; "><span class=3D"Apple-style-span" = style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: = Helvetica; font-style: normal; font-variant: normal; font-weight: = normal; letter-spacing: normal; line-height: normal; orphans: 2; = text-indent: 0px; text-transform: none; white-space: normal; widows: 2; = word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; = -webkit-border-vertical-spacing: 0px; = -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: = auto; -webkit-text-stroke-width: 0px; "><div style=3D"word-wrap: = break-word; -webkit-nbsp-mode: space; -webkit-line-break: = after-white-space; "><span class=3D"Apple-style-span" = style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: = Helvetica; font-style: normal; font-variant: normal; font-weight: = normal; letter-spacing: normal; line-height: normal; orphans: 2; = text-indent: 0px; text-transform: none; white-space: normal; widows: 2; = word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; = -webkit-border-vertical-spacing: 0px; = -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: = auto; -webkit-text-stroke-width: 0px; "><div style=3D"word-wrap: = break-word; -webkit-nbsp-mode: space; -webkit-line-break: = after-white-space; "><span class=3D"Apple-style-span" = style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: = Helvetica; font-style: normal; font-variant: normal; font-weight: = normal; letter-spacing: normal; line-height: normal; orphans: 2; = text-indent: 0px; text-transform: none; white-space: normal; widows: 2; = word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; = -webkit-border-vertical-spacing: 0px; = -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: = auto; -webkit-text-stroke-width: 0px; "><div style=3D"word-wrap: = break-word; -webkit-nbsp-mode: space; -webkit-line-break: = after-white-space; "><span class=3D"Apple-style-span" = style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: = Helvetica; font-style: normal; font-variant: normal; font-weight: = normal; letter-spacing: normal; line-height: normal; orphans: 2; = text-indent: 0px; text-transform: none; white-space: normal; widows: 2; = word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; = -webkit-border-vertical-spacing: 0px; = -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: = auto; -webkit-text-stroke-width: 0px; "><div style=3D"word-wrap: = break-word; -webkit-nbsp-mode: space; -webkit-line-break: = after-white-space; "><span class=3D"Apple-style-span" = style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: = Helvetica; font-style: normal; font-variant: normal; font-weight: = normal; letter-spacing: normal; line-height: normal; orphans: 2; = text-indent: 0px; text-transform: none; white-space: normal; widows: 2; = word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; = -webkit-border-vertical-spacing: 0px; = -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: = auto; -webkit-text-stroke-width: 0px; "><div style=3D"word-wrap: = break-word; -webkit-nbsp-mode: space; -webkit-line-break: = after-white-space; "><span class=3D"Apple-style-span" = style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: = Helvetica; font-style: normal; font-variant: normal; font-weight: = normal; letter-spacing: normal; line-height: normal; orphans: 2; = text-indent: 0px; text-transform: none; white-space: normal; widows: 2; = word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; = -webkit-border-vertical-spacing: 0px; = -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: = auto; -webkit-text-stroke-width: 0px; "><div style=3D"word-wrap: = break-word; -webkit-nbsp-mode: space; -webkit-line-break: = after-white-space; "><span class=3D"Apple-style-span" = style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: = Helvetica; font-style: normal; font-variant: normal; font-weight: = normal; letter-spacing: normal; line-height: normal; orphans: 2; = text-indent: 0px; text-transform: none; white-space: normal; widows: 2; = word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; = -webkit-border-vertical-spacing: 0px; = -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: = auto; -webkit-text-stroke-width: 0px; "><div style=3D"word-wrap: = break-word; -webkit-nbsp-mode: space; -webkit-line-break: = after-white-space; "><div><div style=3D"margin-top: 0px; margin-right: = 0px; margin-bottom: 0px; margin-left: 0px; font-size: 12px; "><span = class=3D"Apple-style-span" style=3D" "><div style=3D"margin-top: 0px; = margin-right: 0px; margin-bottom: 0px; margin-left: 0px; = ">--------------------------------------------------</div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; ">Andrea Valle</div><div style=3D"margin-top: 0px; = margin-right: 0px; margin-bottom: 0px; margin-left: 0px; = ">--------------------------------------------------</div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; ">CIRMA - StudiUm</div><div style=3D"margin-top: 0px; = margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Universit=E0 = degli Studi di Torino</div><div style=3D"margin-top: 0px; margin-right: = 0px; margin-bottom: 0px; margin-left: 0px; ">--&gt; <a = href=3D"http://www.cirma.unito.it/andrea/">http://www.cirma.unito.it/andre= a/</a></div><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; ">--&gt; <a = href=3D"http://www.fonurgia.unito.it/andrea/">http://www.fonurgia.unito.it= /andrea/</a></div><div style=3D"margin-top: 0px; margin-right: 0px; = margin-bottom: 0px; margin-left: 0px; ">--&gt; <a = href=3D"http://www.flickr.com/photos/vanderaalle/sets/">http://www.flickr.= com/photos/vanderaalle/sets/</a></div><div style=3D"margin-top: 0px; = margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">--&gt; <a = href=3D"http://vimeo.com/vanderaalle">http://vimeo.com/vanderaalle</a></di= v><div style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; ">--&gt; &nbsp;<a = href=3D"http://www.youtube.com/user/vanderaalle">http://www.youtube.com/us= er/vanderaalle</a></div><div style=3D"margin-top: 0px; margin-right: = 0px; margin-bottom: 0px; margin-left: 0px; ">--&gt; <a = href=3D"mailto:andrea.valle@xxxxxxxx">andrea.valle@xxxxxxxx</a></div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; = ">--------------------------------------------------</div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; "><br></div><div style=3D"margin-top: 0px; = margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; ">"This is a very complicated case, Maude. You know, a = lotta ins, a lotta outs, a lotta what-have-yous."&nbsp;</div><div = style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; = margin-left: 0px; ">(Jeffrey 'The Dude' = Lebowski)</div></div></span></div></div></div></span></div></span></div></= span></div></span></div></span></div></span></div></span></div></span></sp= an> </div> <br><div><div>On 22 Jan 2014, at 08:11, Pierre Divenyi &lt;<a = href=3D"mailto:pdivenyi@xxxxxxxx">pdivenyi@xxxxxxxx</a= >&gt; wrote:</div><br class=3D"Apple-interchange-newline"><blockquote = type=3D"cite">Linda,<br><br>Check the work by Leon van Noorden on = precisely this question.<br><br>-Pierre<br><br>On 1/21/14, 8:45 AM, = "Linda Seltzer" &lt;<a = href=3D"mailto:lseltzer@xxxxxxxx">lseltzer@xxxxxxxx</a= >&gt; wrote:<br><br><blockquote type=3D"cite">When we walk, we can hear = our footsteps, even if we are walking barefoot<br>on a soft surface. = &nbsp;However, the number of steps per second in walking is<br>below the = auditory range. &nbsp;What is it about the impact with the = ground<br>that causes the auditory signal? &nbsp;Are there papers on the = acoustics of a<br>footstep?<br><br>Thank you for any = information.<br><br>Linda = Seltzer<br></blockquote><br></blockquote></div><br></div></div></body></ht= ml>= --Apple-Mail=_ABA5E836-FEE2-45F2-84A0-BE35D0201A71--


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