concert halls around the world physics of music, spring 2014
TRANSCRIPT
- Slide 1
- CONCERT HALLS AROUND THE WORLD Physics of Music, Spring 2014
- Slide 2
- KENNEDY CENTER (WASHINGTON, DC)
- Slide 3
- DISNEY CONCERT HALL (LOS ANGELES, CA)
- Slide 4
- CARNEGIE HALL (NY CITY, NY)
- Slide 5
- STATE OPERA HOUSE (VIENNA, AUSTRIA)
- Slide 6
- BERLIN PHILHARMONIKER (BERLIN, GERMANY)
- Slide 7
- SYDNEY OPERA HOUSE (SYNDEY, AUSTRALIA)
- Slide 8
- BEIJING CONCERT HALL (BEIJING, CHINA)
- Slide 9
- ROYAL TEATRO COLON (BUENOS AIRES, ARGENTINA)
- Slide 10
- TO PONDER: What specific features did you notice? What are some common design principles? Why might they be incorporated from a wave mechanics and listening standpoint?
- Slide 11
- ROOM ACOUSTICS: SABINES LAW Physics of Music, Spring 2014
- Slide 12
- VISUALIZING REFLECTIONS
- Slide 13
- REVERB TIME DEFINED Time at which SIL decays (or would decay) by 60 dB
- Slide 14
- TEXTURE: SMOOTH OPERATOR? Ragged Decay Double-Slope
- Slide 15
- DESIRED REVERB TIME
- Slide 16
- SABINES LAW Empirically derived formula for Reverb Time: T R = 0.050 V/S a V = volume of room S a = total absorption area Wallace C. Sabine Father of Acoustics
- Slide 17
- COEFFICIENT OF ABSORPTION ::
- Slide 18
- REVERB TIMES AROUND THE WORLD
- Slide 19
- EXAMPLE PROBLEM (THE KRANTZ HOUSE LIVING ROOM, WITH 16 PEOPLE?) Floor = plywood ( = 0.11 @ 1000 Hz) Walls/Ceiling = glass ( = 0.04 @ 1000 Hz) 40 ft 20 ft 10 ft
- Slide 20
- CITATIONS D. Hall, Musical Acoustics http://hyperphysics.phy-astr.gsu.edu/hbase/acoustic/revtim.html http://hyperphysics.phy-astr.gsu.edu/hbase/acoustic/revtim.html http://hyperphysics.phy-astr.gsu.edu/hbase/acoustic/revlow.html#c3