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Large Area Assistive Listening Systems (Als) : Review and Recommendations

By Bakke, Matthew H.

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Book Id: WPLBN0000692584
Format Type: PDF eBook
File Size: 1.09 MB.
Reproduction Date: 2005
Full Text

Title: Large Area Assistive Listening Systems (Als) : Review and Recommendations  
Author: Bakke, Matthew H.
Volume:
Language: English
Subject: Government publications, Access Board, Architectural and Transportation Barriers Compliance Board
Collections: U.S. Access Board Collection
Historic
Publication Date:
Publisher: United States Access Board

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Bakke, M. H. (n.d.). Large Area Assistive Listening Systems (Als) : Review and Recommendations. Retrieved from http://members.worldlibrary.net/


Description
Government Reference Publication

Excerpt
Excerpt: The Rehabilitation Engineering Research Center at the Lexington School for the Deaf was charged with recommending performance standards for Assistive Listening Systems (ALS) to the Architectural and Transportation Barriers Compliance Board (the Access board). Included in this charge was the preparation of a State of the Art paper that would describe the current status and major issues presented by ALS. The recommended standards were to be based not only on the results of a study investigating listening performance under various acoustical conditions, but also to include other factors that affect the real-life use of these systems. In addition to the research study, three focus groups were conducted composed of consumers, and representatives from manufacturers, installers, movie and theater chains, and the national sound contractor?s association. A detailed description of the entire project can be found in the accompanying paper; in this executive summary, we will focus only on our final recommendations.

Table of Contents
Table of Contents -- EXECUTIVE SUMMARY -- 1. INTRODUCTION 1 -- 2. BACKGROUND .. 2 -- 2.1 Induction Loop (IL) System . 3 -- 2.1.1 General Description . 3 -- 2.1.2 Standards 4 -- 2.1.2.1 Summary of IEC 118-4 (1981) Standards . 5 -- 2.1.2.2 Additional Proposed Specifications (by Oval Window Audio) . 5 -- 2.1.2.3 New York State Standards 6 -- 2.1.3 Receivers 7 -- 2.1.4 Issues 7 -- 2.2 FM Radio Systems 9 -- 2.2.1 General Description . 9 -- 2.2.2 Standards . 11 -- 2.2.2.1 FCC Regulations . 11 -- 2.2.2.2 New York State Standards . 12 -- 2.2.3 Receivers . 13 -- 2.2.4 Issues . 14 -- 2.3 Infrared (IR) Systems 16 -- 2.3.1 Standards . 19 -- 2.3.2 IR Receivers .. 19 -- 2.3.3 Issues . 20 -- 3. MICROPHONE INPUTS 21 -- 3.1 Selecting the Appropriate Microphone 21 -- 3.2 Microphone Location 22 -- 3.3 Need for Overriding Principle . 22

 

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