Docsity
Docsity

Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity


Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan


Guidelines and tips
Guidelines and tips

Fundamentals of Acoustics in Architectural Acoustics - Lecture Slides | ARCH 4840, Study notes of Architecture

Lecture 1 Material Type: Notes; Professor: Brooks; Class: ARCHITECTURAL ACOUSTICS 1; Subject: Architecture; University: Rensselaer Polytechnic Institute; Term: Fall 2014;

Typology: Study notes

2014/2015

Uploaded on 05/21/2015

nellyboblittle
nellyboblittle 🇺🇸

3

(1)

11 documents

1 / 10

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
pf3
pf4
pf5
pf8
pf9
pfa

Partial preview of the text

Download Fundamentals of Acoustics in Architectural Acoustics - Lecture Slides | ARCH 4840 and more Study notes Architecture in PDF only on Docsity!

Fundamentals of Acoustics

Architectural Acoustics I

29 August 2014

Scope of acoustics

Artec Consultants Inc provides design and planning services for performing arts facilities all around the world, ranging from modest-budget community centers to the most prestigious landmark performing arts centers. Since its foundation in 1970, the firm has built a distinguished reputation for excellence based on our ability to provide our clients, and the artists who perform in our facilities, with high-quality solutions tailored to their needs and resources. Artec’s consulting services span the following areas:

  • AuditoriumDesign;
  • Acoustics;
  • Facility (Theatre) Planning;
  • Design and Planning of Specialized Performance Equipment Systems; and
  • Operations and Business Planning

http://www.ncac.com

http://www.clarionledger.com/article/20090821/NEWS/908210363/1001/NEWS

In the news…

The Clarion-LedgerAugust 21, 2009

Courthouse's acoustics overlooked J.R. Welsh The Sun Herald Hancock County's newly renovated, historic courthouse is a treat for the eyes, but officials are saying it's not so good for the ears. … Apparently, however, no one considered acoustics. County supervisors say sound becomes magnified and bounces all over the place in thecavernous courtroom. Words can be heard but not understood. To a jury, officials fear, even the footsteps of a pacing lawyer delivering a closing argument might sound something like gunshots. "What we're left with now is a courtroom that is gorgeous, but not functional," Hancock CountyAttorney Ronnie Artigues said. "It's no good if you can't use it."

… "This is technology at work," board President Rocky Pullman said. "Trying to marry the old and thenew ... it's a shame. We've got to fix it."

Design Project (second semester)

Design Project (second semester)

Design

Project

(second

semester)

Wave Motion

Compression (high pressure)

Rarefaction (low pressure)

http://www.glenbrook.k12.il.us/gbssci/phys/Class/sound/u11l1c.html

Wave Motion

  • Medium particles vibrate, bump into others, pass energy/motion along
  • Sound in air: particle motion is in the same direction as the propagation (longitudinal waves)
  • Ripples on water: particle motion is perpendicular to the direction of propagation (transverse waves)
  • Particle motion is local. Particles do not propagate with the wave but oscillate about their rest positions

Wave Motion

Longitudinal Waves

Particle Motion Propagation Direction

http://www.kettering.edu/~drussell/Demos/waves-intro/waves-intro.html

Wave Motion

Transverse Waves

Particle Motion

Propagation Direction

http://www.kettering.edu/~drussell/Demos/waves-intro/waves-intro.html

Wave Equation

2

2 2

2

w

w

t

p

c

p

2

2 2

2 2

2 2

x y w z

w ˜

w

w ˜

w

w ˜

’^2 is the Laplacian operator