R1 Nuclear Reactor Hall

Information

Description: 
Built in 1954, the R1 Nuclear Reactor has not been used since 1970. However, the reactor hall still remains. It is found 25 metres underneath the KTH Royal Institute of Technology, near to Stolkholm.
Measurement Team: 
Damian T. Murphy
Capture Date: 
Tue, 07/11/2006
Size: 
3500 m³
Source Sound: 
Swept Sine; 20 Hz - 22 kHz; 15 Seconds
Source Sound Category: 
Swept sine (logarithmic)
Space Category: 
Hall
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)
6.985.454.495.155.434.783.602.511.450.98

Early Decay Time EDT (seconds)
6.155.123.844.354.354.102.821.921.030.51

Definition D50
0.020.110.130.170.220.240.400.500.590.79

Clarity C50 (dB)
-17.33-9.15-8.29-6.82-5.61-4.93-1.73-0.031.535.76

Clarity C80 (dB)
-15.65-7.04-4.51-1.40-3.53-3.24-0.012.065.0711.22


Example Audio



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Impulse Responses

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

Sample Rate: 44.1 kHz
Number of Channels: 1
Bits per Sample: 24
Duration: 19.94 s
File Size: 2.52 MB
File Format: wav
Source Sound: Genelec 8240A loudspeaker, 15 second log. sine sweep
Microphone: Soundfield Microphone, SPS422B
Source Location: In the centre, on one side of the pit
Microphone Location: In the centre, on other side of the pit
Source Receiver Distance (m): 14.88 m
Source Height: 1.5 m
Receiver Height: 1.5 m


Sample Rate: 48 kHz
Number of Channels: 1
Bits per Sample: 24
Duration: 19.94 s
File Size: 2.74 MB
File Format: wav
Source Sound: Genelec 8240A loudspeaker, 15 second log. sine sweep
Microphone: Soundfield Microphone, SPS422B
Source Location: In the centre, on one side of the pit
Microphone Location: In the centre, on other side of the pit
Source Receiver Distance (m): 14.88 m
Source Height: 1.5 m
Receiver Height: 1.5 m

Stereo: 

Sample Rate: 44.1 kHz
Number of Channels: 2
Bits per Sample: 24
Duration: 20.28 s
File Size: 5.12 MB
File Format: wav
Source Sound: Genelec 8240A loudspeaker, 15 second log. sine sweep
Microphone: Cardioid Microphone, Neumann KM 140
Source Location: In the centre, on one side of the pit
Microphone Location: In the centre, on other side of the pit
Source Receiver Distance (m): 14.88 m
Source Height: 1.5 m
Receiver Height: 1.5 m


Sample Rate: 48 kHz
Number of Channels: 2
Bits per Sample: 24
Duration: 20.28 s
File Size: 5.57 MB
File Format: wav
Source Sound: Genelec 8240A loudspeaker, 15 second log. sine sweep
Microphone: Cardioid Microphone, Neumann KM 140
Source Location: In the centre, on one side of the pit
Microphone Location: In the centre, on other side of the pit
Source Receiver Distance (m): 14.88 m
Source Height: 1.5 m
Receiver Height: 1.5 m

B-Format: Multichannel: 

Sample Rate: 44.1 kHz
Number of Channels: 4
Bits per Sample: 24
Duration: 14.8 s
File Size: 7.47 MB
File Format: wav
Source Sound: Genelec 8240A loudspeaker, 15 second log. sine sweep
Microphone: Soundfield Microphone, SPS422B
Source Location: In the centre, on one side of the pit
Microphone Location: In the centre, on other side of the pit
Source Receiver Distance (m): 14.88 m
Source Height: 1.5 m
Receiver Height: 1.5 m


Sample Rate: 48 kHz
Number of Channels: 4
Bits per Sample: 24
Duration: 8.8 s
File Size: 4.83 MB
File Format: wav
Source Sound: Genelec 8240A loudspeaker, 15 second log. sine sweep
Microphone: Soundfield Microphone, SPS422B
Source Location: In the centre, on one side of the pit
Microphone Location: In the centre, on other side of the pit
Source Receiver Distance (m): 14.88 m
Source Height: 1.5 m
Receiver Height: 1.5 m

5.1 Surround: 

Sample Rate: 44.1 kHz
Number of Channels: 6
Bits per Sample: 24
Duration: 9.8 s
File Size: 7.42 MB
File Format: wav
Source Sound: Genelec 8240A loudspeaker, 15 second log. sine sweep
Microphone: Soundfield Microphone, SPS422B
Source Location: In the centre, on one side of the pit
Microphone Location: In the centre, on other side of the pit
Source Receiver Distance (m): 14.88 m
Source Height: 1.5 m
Receiver Height: 1.5 m


Sample Rate: 48 kHz
Number of Channels: 6
Bits per Sample: 24
Duration: 8.8 s
File Size: 7.25 MB
File Format: wav
Source Sound: Genelec 8240A loudspeaker, 15 second log. sine sweep
Microphone: Soundfield Microphone, SPS422B
Source Location: In the centre, on one side of the pit
Microphone Location: In the centre, on other side of the pit
Source Receiver Distance (m): 14.88 m
Source Height: 1.5 m
Receiver Height: 1.5 m

Images

Photographs and Diagrams: 
R1 Nuclear Reactor Hall
R1 Nuclear Reactor Hall
R1 Nuclear Reactor Hall
R1 Nuclear Reactor Hall
R1 Nuclear Reactor Hall
R1 Nuclear Reactor Hall
R1 Nuclear Reactor Hall
R1 Nuclear Reactor Hall
R1 Nuclear Reactor Hall
R1 Nuclear Reactor Hall
R1 Nuclear Reactor Hall

Location

Address: 
KTH Royal Institute of Technology
Valhallavägen 79
Stockholm 114 27
Sweden
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Attribution

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