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Audio Over IP

Building Pro AoIP Systems with Livewire

By Steve Church, Skip Pizzi

  1. ISBN: 9780240812441
  2. Publication Date: September 2009
  3. Format: Paperback
  4. Pages: 280
  5. Price:
    • $72.95 (USD)
    • £44.99 (GBP)
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Description

Position yourself at the forefront of audio and broadcast studio technology by learning audio over IP. You will gain knowledge of IP network engineering as it applies to audio applications, and then progress to a full understanding of how equipment built on Ethernet and Internet Protocol are used in today's audio production and broadcast facilities for the transporting, mixing and processing of pro-quality audio. A chapter on integrating Voice-over IP telephony (VoIP) to pro-audio and broadcast facilities is also included.

Using the popular Livewire technology, you will learn how to design, construct, configure and troubleshoot an AoIP system, including how to interface with PCs, VoIP telephone PBXs, IP codecs, and the Internet. See how AoIP systems work in practice, and discover their distinct advantages over older audio infrastructures. With its complete introduction to AoIP technology in a fun, highly readable style, this book is essential for audio professionals who want to broaden their knowledge of IP-based studio systems--or for IT experts who need to understand AoIP applications.

Author Bio

Steve Church is the President of Telos Systems. Before founding the company, he was a Technical Director and talk host for radio stations such as WMMS/Cleveland, and WFBQ/Indianapolis. As co-inventor of Livewire, he is a pioneer in IP Audio technology. Steve designed the first DSP-based product for radio broadcast applications, the Telos 10 digital hybrid. He was the first to design a product using MP3 and played a key role in popularizing the codec for PC and Internet music applications.
Skip Pizzi is Contributing Editor at Radio World magazine, where he writes "The Big Picture? column that appears in every issue. He has also spent 11 years in various positions at Microsoft, initially as Audio Systems Engineer in the Interactive Media Production unit, and most recently as Senior Policy Analyst for the company's Entertainment & Devices Division. Previously, Skip served as Technical Editor, Editor and Editor-in-chief at Broadcast Engineering and BE Radio (now Radio) magazines. Earlier he spent 13 years at NPR, where he served as technical director for numerous award-winning programs, and founded the company's technical training program. He is also a published author (see below). Skip is a frequent speaker at international conferences on broadcasting, audio and music, and currently co-chairs the Surround Sound Audio Task Group of the U.S.'s National Radio Systems Committee. Skip also serves as a judge for the National Television Academy's "Technical Emmy? Awards. He holds a B.A. from Georgetown University, where he studied International Economics, Electrical Engineering and Fine Arts.

Contents

1. Introduction to AoIP

*A Brief History

*The Arguments for AoIP

*IP-Anything

*What's the Catch?

*Implementation and Integration

*AoIP in Use Today

*The Bottom Line

2. Network Engineering for Audio Engineers

*TDM vs. IP

*Ethernet/IP Networks: Layering Model

*Local Area Networls (LANs)

*Wide Area Networks (WANs) and the Internet

*Quality of Service (QoS)

*IP and Ethernet Addresses

*Network Diagrams

*Pro Audio, meet IP

3. Switching and Routing

*Layers and Terms

*The Ethernet Switch

*The IP Router

*Straddling Layers

*Audio Routing Control

*Multicasting

4. The Livewire System

*What Can You Do with It?

*AES3

*Livewire System Components

*Channel Numbering and Naming

*Delay

*Levels and Metering

*The Deep Stuff- How Livewire Technology Works

*Livewire Routing Control Protocol (LWRP)

*Livewire Control Protocol (LWCP)

5. Designing and Building with AoIP

*Wiring the AoIP Facility

*Ethernet Switches and IP Routers for Livewire

*AoIP Applications and Architectures

*More on Architectures

6. VoIP Telephone Systems in an Studio Environment

*VoIP in Radio Stations

*SIP

*IAX as a SIP Alternative

*Codecs

*Packetization and RTP

*Delay

*IP-PBXs

*Gateways

*Using VoIP to Connect to the Telco Network

*Skype

*Studio On-Air Systems

*Application Example: The Telos Nx6 and Nx12

*Transformative Tech

7. IP Codecs

*The Challenge

*When Delay Doesn't Matter

*And When It Does: Achieving Low-Delay

*Delay and Echo

*Call Setup: Say Hellp to SIP (Again)

*SIP Servers

*Networks

*The EBU N/ACIP Standard

*Livewire-enabled IP Codecs

*Convergence

8. Troubleshooting

*Prevention

*Basic Network Tests and Diagnostics

*Ethernet Switch Diagnostics and Configurations

*Cable Testers

*Livewire Components

*Logging

9. FAQs

10. Glossary, References and Resources