IMPROVING SPEECH INTELLIGIBILITY IN UNDERGROUND STATIONS

Underground stations are typically long enclosures, for which classical room acoustics is inappropriate. A ray tracing computer model has been developed specifically for the prediction of the sound field in long enclosures. The aim of the model is to enable the acoustics of long enclosures, particularly underground stations, to be studied. In particular the model has been designed to predict the acoustic parameters associated with speech intelligibility, including sound propagation, clarity index, and speech transmission index. This paper briefly describes the development and validation of the model. It shows how the model has been used to study the sound field in long enclosures with multiple sources, of which underground stations are particular examples, and discusses the effects predicted by the model of various factors upon speech intelligibility. (A) For the covering abstract see IRRD E101083.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/1901656179
• Corporate Authors:

  Institute of Acoustics

  77A St. Peter's Street
  St. Albans, Hertfordshire AL1 3BN,   United Kingdom 
• Authors:
  • SHIELD, B M
  • YANG, L N
• Conference:
  • ADVANCES IN TRANSPORTATION NOISE. PROCEEDINGS OF THE INSTITUTE OF ACOUSTICS, PART 2, 1999
• Publication Date: 1999

Language

• English

Media Info

• Features: References;
• Pagination: p. 13-20
• Serial:
  • Volume: 21

Subject/Index Terms

• TRT Terms: Noise; Passenger information systems; Scale models; Sound; Structural models; Subways
• ITRD Terms: 6205: Model (not math); 2492: Noise; 8786: Passenger information; 6748: Sound; 1191: Underground railway
• Subject Areas: Bridges and other structures; Environment;

Filing Info

• Accession Number: 00765820
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 1-901656-17-9
• Files: ITRD
• Created Date: Jul 1 1999 12:00AM