Digital Wireless Audio Systems: Technology and Solutions

Course 198

Summary:

This 3-day course provides attendees with a comprehensive introduction to digital wireless audio systems used for music and/or voice applications. The course will present an overview of existing wireless audio technology and discuss the advantages of using RF versus IR and the benefits of digital modulation versus older analog systems. Emphasis will be on the RF and PHY/MAC layer technologies although there will be time devoted to overall performance requirements and discussion of existing commercial solutions.

Learning Objectives:

Upon completing the course, the participant will be able to:

Understand basics of digital wireless audio (DWA) technology
Understand Bluetooth DWA solutions and benefits
Understand benefits of proprietary radio DWA solutions
Be familiar with existing DWA products on the market today

Target Audience:

This course is designed for anyone involved in projects requiring embedded wireless audio technology (either music or voice). Personnel from engineering, marketing and sales can all benefit. A general electronics background and basic understanding of RF and wireless technologies is helpful.

Outline:

Day One

Introduction
• Overview of the wireless audio industry and products available today
Performance and Design Goals
• Fidelity • Power consumption • Range • Interference • Security
Wireless Audio Technology
• RF vs IR • Digital vs analog • Proprietary vs standards
Classification of Wireless Audio Products
• Headphones • Headsets • Speakers • Subwoofers • Microphones • Pro-audio

Day Two

Digital Audio Basics
• Sampling • ADC and DAC • Nyquist BW • Quality of service • Compression
RF System Design Basics
• Frequency band • Modulation • Rx sensitivity • Tx power • Range • Regulatory
RF Components
• LNA • PA • Transceiver IC • Antenna • PCB/shielding • Antenna

Day Three

Bluetooth Wireless Audio Solutions
• 2.4GHz band • Fast FHSS • EDR 3Mbps • A2DP profile • Cost/performance
Proprietary Wireless Audio Solutions
• Unlicensed bands • FHSS/DSSS • Specialized applications • Cost/performance
The Future of Digital Wireless Audio
• New technologies and products • Lower costs • Improved performance

Subject Areas Covered

Bluetooth, ZigBee, and Other Personal Area Networks

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