York Guildhall Council Chamber

Information

Description: 
Situated behind the Mansion House, the Guildhall was constructed in the 15th century as a meeting place for the guilds of York. The council chamber in its current form was built much later, completed in 1891. It is constructed predominantly of wood, including wooden panelling that borders all four walls from the floor to approximately 2.5 in height. Victorian wallpapered plaster walls forms 3 meters of walling above the wooden panelling. The ceiling is arched perpendicular to the length of the room and is constructed of timber, in a combination of beams and panelling. The room measures 15.23m in length, 10.04m in width, and 8.68m in height (at arch apex). Leather lined wooden seating forms a large proportion of the room, with a large heavy oak table located at the room's centre. Three source positions were selected based on the positions from which the city mayor and primary members of the council would typically address the public or other council members. Similarly, four receiver positions were chosen based on the positions the public and other council members would listen from. Source position 1 was from the mayor's chair. Sources 2 and 3 on either side of the council pews where primary members of the council would usually address from. Receiver 1 was located at the centre point of the public pews to assess speech intelligibility for a typical listener. Receivers 2, 3 and 4 were spread across the council seating that faces directly opposite but furthest from the mayor. The reasons for this were twofold. Firstly to give a general acoustic impression for a listener located in the main body of the room. Secondly to assess the difference, if any, in intelligibility between a council listener and those located in the public pews (Please see images for more precise source/receiver positions). The composition and materials used in an original victorian council chamber are in themselves quite unusual, and a room with these types of dense wooden structures has seen less in the way of acoustic response measurements. We aimed to explore how these uncommon structures, as well as the variety of other materials used (leather, stain glass, large curtains and wallpaper), influenced the acoustical characteristics of the space.
Measurement Team: 
Oliver McIntyre
Benjamin Tsui
Elizabeth Wilson
Capture Date: 
Fri, 17/02/2017
Size: 
1140 m³
Source Sound: 
Swept Sine; 20 Hz - 22 kHz; 30 Seconds, 96kHz
Source Sound Category: 
Swept sine (logarithmic)
Input: 
Genelec 8130A
Microphone(s): 
Soundfield ST450 MkII
Space Category: 
Chamber
Generation Type: 
Real World

Analysis

Analysis Description: 
Source Position 1 - Mayor's Chair, Receiver Position 1 - Public Pews Central. Distance between source and receiver: 12 m. Receiver position: 1.75 m from NW wall, 13.75 m from SE wall. Temperature: 16°C. Humidity: 82%
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)
3.622.250.730.840.930.930.890.820.640.46

Early Decay Time EDT (seconds)
1.391.270.880.751.010.881.010.880.750.50

Definition D50
0.020.290.620.550.600.530.440.520.600.80

Clarity C50 (dB)
-16.68-3.812.130.871.810.58-1.020.311.715.93

Clarity C80 (dB)
-6.85-1.726.926.794.713.382.944.245.9811.40


Example Audio



Widget for external sites

Copy and paste this code to your website.

Impulse Responses

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

Sample Rate: 96 kHz
Number of Channels: 4
Bits per Sample: 24
Duration: 5 s
File Size: 5.49 MB
File Format: wav
Source Sound: Genelec 8130A. 30 Second Logarithmic Sine Sweep, 20 Hz - 22 kHz.
Microphone: Soundfield ST450 MkII
Source Location: Source Position 1 - Mayor's Chair
Microphone Location: Receiver Position 1 - Public Pews Centre
Source Receiver Distance (m): 12 m
Source Height: 1.60 m
Receiver Height: 1.60 m
Temperature: 16 °C


Sample Rate: 96 kHz
Number of Channels: 4
Bits per Sample: 24
Duration: 5 s
File Size: 5.49 MB
File Format: wav
Source Sound: Genelec 8130A. 30 Second Logarithmic Sine Sweep, 20 Hz - 22 kHz.
Microphone: Soundfield ST450 MkII
Source Location: Source Position 1 - Mayor's Chair
Microphone Location: Receiver Position 2 - Counsellor Seating (NW Side)
Source Receiver Distance (m): 9.0 m
Source Height: 1.60 m
Receiver Height: 1.60 m
Temperature: 16 °C


Sample Rate: 96 kHz
Number of Channels: 4
Bits per Sample: 24
Duration: 5 s
File Size: 5.49 MB
File Format: wav
Source Sound: Genelec 8130A. 30 Second Logarithmic Sine Sweep, 20 Hz - 22 kHz.
Microphone: Soundfield ST450 MkII
Source Location: Source Position 1 - Mayor's Chair
Microphone Location: Receiver Position 3 - Counsellor Seating (NE Side)
Source Receiver Distance (m): 9.0 m
Source Height: 1.60 m
Receiver Height: 1.60 m
Temperature: 16 °C


Sample Rate: 96 kHz
Number of Channels: 4
Bits per Sample: 24
Duration: 5 s
File Size: 5.49 MB
File Format: wav
Source Sound: Genelec 8130A. 30 Second Logarithmic Sine Sweep, 20 Hz - 22 kHz.
Microphone: Soundfield ST450 MkII
Source Location: Source Position 1 - Mayor's Chair
Microphone Location: Receiver Position 4 - Counsellor Seating (Central)
Source Receiver Distance (m): 7.0 m
Source Height: 1.60 m
Receiver Height: 1.60 m
Temperature: 16 °C


Sample Rate: 96 kHz
Number of Channels: 4
Bits per Sample: 24
Duration: 5 s
File Size: 5.49 MB
File Format: wav
Source Sound: Genelec 8130A. 30 Second Logarithmic Sine Sweep, 20 Hz - 22 kHz.
Microphone: Soundfield ST450 MkII
Source Location: Source Position 2 - Counsellor Seating (North Side)
Microphone Location: Receiver Position 1 - Public Pews Centre
Source Receiver Distance (m): 6.0 m
Source Height: 1.60 m
Receiver Height: 1.60 m
Temperature: 16 °C


Sample Rate: 96 kHz
Number of Channels: 4
Bits per Sample: 24
Duration: 5 s
File Size: 5.49 MB
File Format: wav
Source Sound: Genelec 8130A. 30 Second Logarithmic Sine Sweep, 20 Hz - 22 kHz.
Microphone: Soundfield ST450 MkII
Source Location: Source Position 2 - Counsellor Seating (North Side)
Microphone Location: Receiver Position 2 - Counsellor Seating (NW Side)
Source Receiver Distance (m): 4.50 m
Source Height: 1.60 m
Receiver Height: 1.60 m
Temperature: 16 °C


Sample Rate: 96 kHz
Number of Channels: 4
Bits per Sample: 24
Duration: 5 s
File Size: 5.49 MB
File Format: wav
Source Sound: Genelec 8130A. 30 Second Logarithmic Sine Sweep, 20 Hz - 22 kHz.
Microphone: Soundfield ST450 MkII
Source Location: Source Position 2 - Counsellor Seating (North Side)
Microphone Location: Receiver Position 3 - Counsellor Seating (NE Side)
Source Receiver Distance (m): 3.0 m
Source Height: 1.60 m
Receiver Height: 1.60 m
Temperature: 16 °C


Sample Rate: 96 kHz
Number of Channels: 4
Bits per Sample: 24
Duration: 5 s
File Size: 5.49 MB
File Format: wav
Source Sound: Genelec 8130A. 30 Second Logarithmic Sine Sweep, 20 Hz - 22 kHz.
Microphone: Soundfield ST450 MkII
Source Location: Source Position 2 - Counsellor Seating (North Side)
Microphone Location: Receiver Position 4 - Counsellor Seating (Central)
Source Receiver Distance (m): 3.0 m
Source Height: 1.60 m
Receiver Height: 1.60 m
Temperature: 16 °C


Sample Rate: 96 kHz
Number of Channels: 4
Bits per Sample: 24
Duration: 5 s
File Size: 5.49 MB
File Format: wav
Source Sound: Genelec 8130A. 30 Second Logarithmic Sine Sweep, 20 Hz - 22 kHz.
Microphone: Soundfield ST450 MkII
Source Location: Source Position 3 - Counsellor Seating (South Side)
Microphone Location: Receiver Position 1 - Public Pews Centre
Source Receiver Distance (m): 6.0 m
Source Height: 1.60 m
Receiver Height: 1.60 m
Temperature: 16 °C


Sample Rate: 96 kHz
Number of Channels: 4
Bits per Sample: 24
Duration: 5 s
File Size: 5.49 MB
File Format: wav
Source Sound: Genelec 8130A. 30 Second Logarithmic Sine Sweep, 20 Hz - 22 kHz.
Microphone: Soundfield ST450 MkII
Source Location: Source Position 3 - Counsellor Seating (South Side)
Microphone Location: Receiver Position 2 - Counsellor Seating (NW Side)
Source Receiver Distance (m): 3.0 m
Source Height: 1.60 m
Receiver Height: 1.60 m
Temperature: 16 °C


Sample Rate: 96 kHz
Number of Channels: 4
Bits per Sample: 24
Duration: 5 s
File Size: 5.49 MB
File Format: wav
Source Sound: Genelec 8130A. 30 Second Logarithmic Sine Sweep, 20 Hz - 22 kHz.
Microphone: Soundfield ST450 MkII
Source Location: Source Position 3 - Counsellor Seating (South Side)
Microphone Location: Receiver Position 3 - Counsellor Seating (NE Side)
Source Receiver Distance (m): 4.50 m
Source Height: 1.60 m
Receiver Height: 1.60 m
Temperature: 16 °C


Sample Rate: 96 kHz
Number of Channels: 4
Bits per Sample: 24
Duration: 5 s
File Size: 5.49 MB
File Format: wav
Source Sound: Genelec 8130A. 30 Second Logarithmic Sine Sweep, 20 Hz - 22 kHz.
Microphone: Soundfield ST450 MkII
Source Location: Source Position 3 - Counsellor Seating (South Side)
Microphone Location: Receiver Position 4 - Counsellor Seating (Central)
Source Receiver Distance (m): 3.0 m
Source Height: 1.60 m
Receiver Height: 1.60 m
Temperature: 16 °C

Images

Photographs and Diagrams: 
Council Chamber (From NW looking SE)
Outlined in red, the location of the council chamber within The Guildhall complex. (See Attribution Section for Image Credit)
Source Position 1
Source Position 2
Source Position 3
Council Chamber (looking south)
Receiver Position 1
Floor Plan with Source/Receiver Positions (See Attribution Section for Image Credit)
York Guildhall Council Chamber

Location

Address: 
Guildhall Council Chamber
St. Helen’s Square
York, NYK YO1 9QL
United Kingdom
Javascript is required to view this map.

Attribution

Attribute this work to: 
www.openairlib.net
Audiolab, University of York
Benjamin Tsui
Oliver McIntyre
Elizabeth Wilson
- - - - - - - - - - - - - - - - - - - -
Image 2 by Kaly99. Available: https://commons.wikimedia.org/wiki/File:Guildhall,_York.jpg
Image 8 Floor Plan, City of York Council. Available: https://www.york.gov.uk/downloads/file/11337/guildhall_drawings