Hoffmann Lime Kiln (Langcliffe,UK)

Information

Description: 
The Hoffmann Lime Kiln, situated in Langcliffe, UK within the Yorkshire Dales National Park is the most structurally complete of the remaining (Hoffmann) lime kilns in the UK. Built in 1873, the industrial scale lime kiln was commissioned by the Craven Lime Company and stood operational until 1931. For more historical and architectural information on the kiln visit the Craven Museum website: (https://www.cravenmuseum.org/archaeology/fact-sheets/the-hoffmann-kiln/). It’s large stone construction, semi-cylindrical shape and many open entrances provide an interesting basis for impulse response measurement. This page presents six Impulse Responses, taken from various positions within the kiln, each coming with their own spatial description and five auralised examples. All measurements were taken in accordance with the ISO-3382 regulations.
Measurement Team: 
Hashim Riaz
Jack Smith
Juan Garcia
Pau Rosell
Capture Date: 
Tue, 28/02/2017
Source Sound: 
Log. Swept Sine; 20-20k Hz; 20s long
Source Sound Category: 
Swept sine (logarithmic)
Input: 
Genelec 8130A
Microphone(s): 
Soundfield ST450 MKII Microphone
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)
2.832.071.501.120.930.710.530.380.330.26

Early Decay Time EDT (seconds)
0.920.790.660.660.660.660.400.400.400.40

Definition D50
0.570.360.550.590.630.670.880.900.890.92

Clarity C50 (dB)
1.23-2.560.861.652.273.158.699.319.0710.50

Clarity C80 (dB)
4.926.356.907.015.577.4312.7114.6514.9118.32


Example Audio



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Impulse Responses

Format(s): 
B-Format (4 Channel Files)
B-Format: Multichannel: 

Sample Rate: 96 kHz
Number of Channels: 4
Bits per Sample: 16
Duration: 2 s
File Size: 1.46 MB
File Format: wav
Source Sound: Genelec 8130A
Microphone: Soundfield ST450 MKII Microphone
Source Location: Centre of pathway, 3.82m left of curve. (See schematic image 1)
Microphone Location: Centre of pathway, center of curve. (See schematic image 1)
Source Receiver Distance (m): 3.82 m
Source Height: 1.5 m
Receiver Height: 1.2 m
Temperature: 5 °C


Sample Rate: 96 kHz
Number of Channels: 4
Bits per Sample: 16
Duration: 2 s
File Size: 1.46 MB
File Format: wav
Source Sound: Genelec 8130A
Microphone: Soundfield ST450 MKII Microphone
Source Location: Centre of pathway, 3.82m left to center of curve. (See schematic image 1)
Microphone Location: Centre of pathway, right of curve. (See schematic image 1)
Source Receiver Distance (m): 6 m
Source Height: 1.5 m
Receiver Height: 1.2 m
Temperature: 5 °C


Sample Rate: 96 kHz
Number of Channels: 4
Bits per Sample: 16
Duration: 2 s
File Size: 1.46 MB
File Format: wav
Source Sound: Genelec 8130A
Microphone: Soundfield ST450 MKII Microphone
Source Location: Centre of pathway, 3.82m left of curve. (See schematic image 1).
Microphone Location: Left of pathway, right of curve. (See schematic image 1). IR a little corrupted by the presence of water drips.
Source Receiver Distance (m): 11.1 m
Source Height: 1.5 m
Receiver Height: 1.2 m
Temperature: 5 °C


Sample Rate: 96 kHz
Number of Channels: 4
Bits per Sample: 16
Duration: 2 s
File Size: 1.46 MB
File Format: wav
Source Sound: Genelec 8130A
Microphone: Soundfield ST450 MKII Microphone
Source Location: Centre of pathway, 3.82m left of curve. (See schematic image 1)
Microphone Location: Right of pathway, right of curve. (See schematic image 1). IR a little corrupted by the presence of water drips.
Source Receiver Distance (m): 13.7 m
Source Height: 1.5 m
Receiver Height: 1.2 m
Temperature: 5 °C


Sample Rate: 96 kHz
Number of Channels: 4
Bits per Sample: 16
Duration: 2 s
File Size: 1.46 MB
File Format: wav
Source Sound: Genelec 8130A
Microphone: Soundfield ST450 MKII Microphone
Source Location: Centre of pathway, just right of curve. (See schematic image 2)
Microphone Location: Centre of pathway, right of curve. (See schematic image 2)
Source Receiver Distance (m): 3 m
Source Height: 1.5 m
Receiver Height: 1.2 m
Temperature: 5 °C


Sample Rate: 96 kHz
Number of Channels: 4
Bits per Sample: 16
Duration: 2 s
File Size: 1.46 MB
File Format: wav
Source Sound: Genelec 8130A
Microphone: Soundfield ST450 MKII Microphone
Source Location: Centre of pathway, just right of curve. (See schematic image 2).
Microphone Location: Centre of pathway, right of curve, next to opening. (See schematic image 2). IR a little corrupted by the presence of water drips.
Source Receiver Distance (m): 6 m
Source Height: 1.5 m
Receiver Height: 1.2 m
Temperature: 5 °C

Images

Photographs and Diagrams: 
Hoffmann Lime Kiln (Langcliffe,UK)
Hoffmann Lime Kiln (Langcliffe,UK)
Schematic Image 1
Schematic Image 2
Hoffmann Lime Kiln (Langcliffe,UK)
Hoffmann Lime Kiln (Langcliffe,UK)
Hoffmann Lime Kiln (Langcliffe,UK)
Hoffmann Lime Kiln (Langcliffe,UK)
Hoffmann Lime Kiln (Langcliffe,UK)

Location

Address: 
Hoffmann Lime Kiln Langcliffe
Yorkshire Dales National Park
Langcliffe, NYK BD24 9NU
United Kingdom
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Attribution

Attribute this work to: 
www.openairlib.net
Audiolab, University of York
Jack Smith, Juan García, Hashim Riaz, Pau Rosell

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License for this content: Public Domain Creative Commons license