Dromagorteen stone circle, Co. Kerry, Ireland

Information

Description: 
Dromagorteen stone circle (Early/Middle Bronze Age: 2000 to 1150 BCE) has 13 stones, one is a recumbent stone and two are portal stones. It belongs to the group Axial Stone Circles (ASC) in Co. Kerry and Co. Cork in Ireland. There is some periodic sound (-56 dB and every 0.37sec), don't know what it is...
Measurement Team: 
Victor Reijs
Capture Date: 
Sat, 14/11/2015
Source Sound: 
small balloon
Source Sound Category: 
Balloon Pop
Microphone(s): 
Zoom H1 build in X/Y unidirection microphones
Space Category: 
Arena
Open Air
Generation Type: 
Real World

Analysis

Analysis Description: 
Microphone on recumbent stone and balloon pop between the portal stones
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)
0.0028.3817.836.071.341.367.390.947.7916.30

Early Decay Time EDT (seconds)
20.410.180.180.180.060.060.060.060.060.18

Definition D50
0.430.971.001.001.001.001.001.000.990.99

Clarity C50 (dB)
-1.2915.5424.9726.5428.8228.0424.3025.0921.6321.62

Clarity C80 (dB)
-0.9915.8426.5729.3931.2028.6025.3726.2924.4023.89


Example Audio



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Impulse Responses

Format(s): 
Stereo (Stereo Files)
Stereo: 

Sample Rate: 44.1 kHz
Number of Channels: 2
Bits per Sample: 24
Duration: 3.79 s
File Size: 980.4 KB
File Format: wav
Source Sound: Balloon Pop
Microphone: Zoom H1 build in X/Y unidirection microphones
Source Receiver Distance (m): 10 m
Source Height: 1.1 m
Receiver Height: .8 m
Temperature: 16 °C

Images

Photographs and Diagrams: 
View from recumbent stone, over internal dolmen, towards portal
The recumbent stone (stone 1)
Dromagorteen stone circle
The right side of the binaural mic setup
The binaural home made mic set (with windmufflers)

Location

Address: 
Dromagorteen Bonane, KR
Ireland
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Attribution

Attribute this work to: 
www.openairlib.net
www.archaeocosmology.org/eng/woodcircleaoucistictestplan.htm
https://www.academia.edu/33589224/Acoustic_and_aural_research_at_timber_and_stone_circles