Hamilton Mausoleum

Information

Description: 
Construction on the Hamilton Mausoleum, Hamilton, Scotland, built for the 10th Duke of Hamilton, started in 1842 and was completed in 1858. It is constructed of marble and sandstone and is surmounted by a dome 36m in height, with two main spaces, a crypt in the lower section, and a chapel that was supposed to be used for worship. However the construction materials, size, shape and dimensions of the latter result in a complex, dense and very long reverberation, and hence render it almost useless for speech presentation. In fact the Guinness Book of World Records claims that the Hamilton Mausoleum has the longest “echo” of any building, recorded on 27 May 1994 as taking 15s for the sound of the reverberation caused by slamming one of the main doors to die away to nothing. The space is now often used by recording musicians for its unique acoustic properties. The interior of Hamilton Mausoleum is approximately octagonal in plan, with a diameter of 18 m. Each side of the octagon is either a plane wall or a further semicircular alcove. The results presented below having the microphone assembly in the centre and the source placed to one side, just outside one of the alcoves, giving a source-receiver distance of 4.8 m.
Measurement Team: 
Damian T. Murphy
Capture Date: 
Sat, 22/01/2005
Size: 
9000 m³
Source Sound: 
Log. Swept Sine; 20-22k Hz; 15s long
Source Sound Category: 
Swept sine (logarithmic)
Space Category: 
Chamber
Generation Type: 
Real World

Analysis

Demonstration Impulse Response: 

Waveform

impulseClick here or on the waveform to upload a sound from your computer and hear it in this space

Acoustic Parameters


Octave Band
31.25 Hz62.5 Hz125 Hz250 Hz500 Hz1 kHz2 kHz4 kHz8 kHz16 kHz

Reverberation Time RT60 T30 (seconds)
29.0522.8819.2715.0612.459.236.023.511.500.67

Early Decay Time EDT (seconds)
15.5514.7813.2411.718.256.203.260.700.060.06

Definition D50
0.050.170.130.330.400.520.630.860.950.99

Clarity C50 (dB)
-13.27-6.86-8.39-3.02-1.840.262.368.0012.3519.69

Clarity C80 (dB)
-5.36-4.44-7.08-2.75-1.450.793.209.0813.2722.19


Example Audio



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Impulse Responses

Format(s): 
Stereo (Stereo Files)
5.1 Surround (6 Channel Files)
B-Format (4 Channel Files)
Stereo: 

Sample Rate: 48 kHz
Number of Channels: 2
Bits per Sample: 24
Duration: 15 s
File Size: 4.12 MB
File Format: wav
Source Sound: Genelec S30D, 15 second log. sine sweep
Microphone: Neumann KM 140 Cardioid
Source Location: Centre of mausoleum main chamber
Microphone Location: Edge of the marble centrepiece near entrance
Source Receiver Distance (m): 4.79 m
Source Height: 1.5 m
Receiver Height: 1.5 m
Temperature: 7 °C

B-Format: Multichannel: 

Sample Rate: 48 kHz
Number of Channels: 4
Bits per Sample: 24
Duration: 15 s
File Size: 8.24 MB
File Format: wav
Source Sound: Genelec S30D, 15 second log. sine sweep
Microphone: Soundfield SPS422B Microphone
Source Location: Centre of mausoleum main chamber
Microphone Location: Edge of the marble centrepiece near entrance
Source Receiver Distance (m): 4.79 m
Source Height: 1.5 m
Receiver Height: 1.5 m
Temperature: 7 °C

5.1 Surround: 

Sample Rate: 48 kHz
Number of Channels: 6
Bits per Sample: 24
Duration: 14.8 s
File Size: 12.2 MB
File Format: wav

Images

Photographs and Diagrams: 
Hamilton Mausoleum
Hamilton Mausoleum
Hamilton Mausoleum
Hamilton Mausoleum
Hamilton Mausoleum

Location

Address: 
Hamiton Mausoleum
129 Muir Street
Hamilton ML3 6BJ
United Kingdom
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Attribution

Attribute this work to: 
www.openairlib.net
Audiolab, University of York
Damian T. Murphy