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<table border="0" cellpadding="3" cellspacing="1" width="100%" class="forumline"> <tr> <th class="thCornerL" width="22%" height="26">Auteur</th> <th class="thCornerR">Bericht</th> </tr> <tr> <td width="22%" align="left" valign="top" class="row1"><span class="name"><a name=""></a><b>Geluidforum</b></span></td> <td class="row1" height="28" valign="top"><table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="100%"><img src="templates/subSilver/images/icon_minipost.gif" width="12" height="9" alt="Bericht" title="Bericht" border="0" /><span class="postdetails">Geplaatst: Do Jul 28, 2011 4:40 pm<span class="gen"> </span> Onderwerp: Geluidsmythe uit antieke tijden?</span></td> </tr> <tr> <td colspan="2"><hr /></td> </tr> <tr> <td colspan="2"><span class="postbody"></span><table width="90%" cellspacing="1" cellpadding="3" border="0" align="center"><tr> <td><span class="genmed"><b>Quote:</b></span></td> </tr> <tr> <td class="quote"><span style="font-weight: bold">More Myths – CHURCH Soundproofing: Wires in Ceiling?</span> <br /> <br />Here’s an interesting exchange retrieved from (..) wrote: <br /> <br /><span style="font-weight: bold">Q:</span> <br />My church has built a new parish hall that has a vaulted ceiling (a v-shape, just like the roof, open, with the trusses visible) and no carpet. The room is fairly large. Sounds echo, vibrate, and bounce all over the place. It is difficult to hear someone sitting near you because of the problems. <br /> <br />I have heard that stretching a wire length wise across the ceiling may have sound absorption characteristics which would improve the noise in the room. Is this correct and how do you set it up? Any other suggestions? <br /> <br />Thank you for any input. <br /> <br /><span style="font-weight: bold">A:</span> <br />It is a commonly held superstition that wires of random length strung in a church ceiling will reduce reverberation. The overly reverberant condition that you report will be cured only by adding sound absorptive material. An acoustical consultant can advise you on which absorbers to use, how many to use, and where to place them for maximum effectiveness. <br /> <br />Having briefly answered the question, I report to fellow acousticians that this superstition is evidently much older than I supposed!<span style="font-weight: bold"> If I correctly understood what Leo Beranek said at the San Diego meeting in December ’97, this superstition goes back at least as far as Roman times!</span></td> </tr></table><span class="postbody"><span style="font-size: 9px; line-height: normal">Bron: <a href="http://www.soundproofing.org/infopages/church.htm" target="_blank" class="postlink">soundproofing.org</a></span></span></td> </tr> </table></td> </tr> <tr> <td colspan="2" height="1" class="spaceRow"><img src="templates/subSilver/images/spacer.gif" alt="" width="1" height="1" /></td> </tr> </table>
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