Neolithic timber circle Pömmelte-Zackmünde, Germany

Information

Description: 
Reconstructed Pömmelte-Zackmünde timber circle (from around 2300 BCE) has: one tightly (~4cm) spaced 1st palisade ring (~75m diameter); one medium (~20cm) spaced (~115m diameter); and two widely (~2m) spaced palisade rings (~45 m and ~55 m diameter). The posts have a diameter of 20cm and a height of 2.5 to 3m. The posts are a little bit crooked and have no bark. The balloon pops (the balloon size along the surface from tip to mouth piece was 45cm) were in the middle of the circle. The binaural microphones were on the ears of a person standing a certain distance from the balloon. 100 Hz high pass filter was used to remove wind noise.
Measurement Team: 
Reinhard Mussik
Victor Reijs
Elke Hockauf
Finn Hockauf
Capture Date: 
Thu, 05/05/2016
Source Sound Category: 
Balloon Pop
Microphone(s): 
binaural, made from two omni directional electret mics
Space Category: 
Arena
Open Air
Generation Type: 
Real World

Analysis

Analysis Description: 
This impulse response (only the left channel of a binaural recording) was recorded when standing 10m from the balloon pop in the centre (and facing the source). A high pass 100 HZ filter was used to remove wind noise.
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)
3.442.771.021.210.920.780.992.081.076.55

Early Decay Time EDT (seconds)
0.190.310.190.190.190.060.060.060.060.06

Definition D50
0.980.990.960.960.980.990.990.990.990.99

Clarity C50 (dB)
16.8718.4913.7014.1416.7520.0320.0018.6522.5221.94

Clarity C80 (dB)
16.9420.1213.7414.1516.8520.1220.0418.7222.6822.23


Example Audio



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Impulse Responses

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

Sample Rate: 48 kHz
Number of Channels: 1
Bits per Sample: 24
Duration: 0.96 s
File Size: 134.99 KB
File Format: wav
Source Sound: 100 Hz high pass filter (to remove wind noise) and first 3msec was removed (as that was overloaded [ballon burst to near the mic]).
Source Receiver Distance (m): 0.3 m
Source Height: 1.4 m
Receiver Height: 1.1 m
Temperature: 15.5 °C

Stereo: 

Sample Rate: 48 kHz
Number of Channels: 2
Bits per Sample: 24
Duration: 1.44 s
File Size: 405.41 KB
File Format: wav
Source Sound: A high pass 100 HZ filter was used to remove wind noise.
Microphone Location: binaural microphones facing centre
Source Receiver Distance (m): 10 m
Source Height: 1.1 m
Receiver Height: 1.1 m
Temperature: 15.5 °C


Sample Rate: 48 kHz
Number of Channels: 2
Bits per Sample: 24
Duration: 1.39 s
File Size: 389.66 KB
File Format: wav
Source Sound: A high pass 100 HZ filter was used to remove wind noise.
Source Location: binaural microphones facing centre
Source Receiver Distance (m): 30 m
Source Height: 1.1 m
Receiver Height: 1.1 m
Temperature: 1.5 °C


Sample Rate: 48 kHz
Number of Channels: 2
Bits per Sample: 24
Duration: 1.39 s
File Size: 391.09 KB
File Format: wav
Source Sound: A high pass 100 HZ filter was used to remove wind noise.
Source Receiver Distance (m): 36 m
Source Height: 1.1 m
Receiver Height: 1.1 m
Temperature: 15.5 °C

Images

Photographs and Diagrams: 
View towards the centre of circle while standing near the 1st palisade
View along the 1st palisade
The crookedness of the (debarked) posts can be seen here (1st palisade)

Location

Address: 
Pömmelte-Zackmünde circle Zackmünde, ST
Germany
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Attribution

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