This recommended practice provides a baseline for the design and installation of residential spaces to be used for home theater or multi-channel music playback. While the focus of these two applications is home theater audio design, many of the practices are applicable to multi-purpose, two-channel and other acoustic spaces. This document was created by the joint ANSI CEA/CEDIA R10 Residential Systems Committee and includes references to industry standards, practices, and recommendations published by other relevant bodies, as well as commonly accepted commercial practices now regarded as “de facto standards' in the audio industry. With this document, industry professionals will gain more knowledge about the recommended practices for audio design in high performance home theaters.
Outline
Introduction
Performance Objectives for Audio
A Procedure for Achieving Objectives
Loudspeaker Layout
Loudspeaker Layout Objectives
Figure 1 - Angular ranges
Loudspeaker Layout Guidelines
Seating Layout
Seating Layout Objectives
Figure 2 - Seating locations
Seating Layout Guidelines
Low Frequency Room Optimization
Figure 3 - Subwoofer arrangements
Low Frequency Room Objective
Low Frequency Room Guidelines
Alternative Methods
Sound Isolation
Table 1 – Transmission Loss values and typical construction
Sound Isolation Objectives
Sound Isolation Guidelines
Wall Construction Guidelines
Flanking Path Guidelines
Figure 4 - Theater entrance anteroom
Interior Acoustical Treatment of Rooms
Reverberation Time Objectives
Reverberation Time Guidelines
Acoustical Materials Placement Objectives
Figure 5 - Suggestions for interior acoustical treatment
Acoustical Materials Placement Guidelines
Acoustical Materials and Devices Guidelines
Flutter Echoes Objectives and Guidelines
Rattles Objectives and Guidelines
Background Noise Objectives
Table 2 - Background noise level objectives
Background Noise Guidelines
Audio System Component Location and Installation
Audio System Component Objectives
Front Loudspeaker Placement and Installation Guidelines
Subwoofer Placement and Installation Guidelines
Side and Rear Speaker Placement Guidelines
Baffle Mounting Guidelines
Additional Resources
Appendix 1: Recommended Approach to Optimizing Multiple Subwoofers in Rooms
with Multiple Seats
Table A-1 – Optimization procedure selection criteria
Positional Optimization
Figure A-1 - Subwoofer configurations
Figure A-2 - Floor plan
Positional/Dimensional Optimization
Figure A-3 - Predicted MSV, seating in room center
Figure A-4 - Predicted MSV, seating in room back
Advanced Optimization
Appendix 2: Calculating Reverberation Time Using the Classic Sabine Equation
Appendix 3: Wall and Ceiling Construction
Framing Techniques
Drywall Isolation Techniques
Floor Isolation Techniques
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