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Technology White Papers:
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Quality, Clarity and
Competitive On-Air Processing
In this age of bigger, better, and who's louder,
broadcasters need to realize that their audience now has many more
choices of what to listen to. If they choose to process for the sake
of loudness at all costs, the results might find listeners migrating
to better-sounding alternatives. Processor design must raise
the bar, yet again, with fresh innovations that yields clarity,
quality, and competitive loudness.
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Studio
Structures for Surround Broadcasting
There is a growing interest among broadcasters to deliver a surround
listening experience to their audiences. Surround is clearly
the hot topic at audio, consumer electronics, and computer shops.
A state-of-the-art networked studio facility supporting the creation
of on-air product for these services presents an opportunity for
both cost savings and operational flexibility.
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The Killer App for
FM: 5.1 Surround Sound
We need to inject life back into radio! For the first time
since 1961, when FM implemented stereo, we have technology that will
keep FM radio competitive with other existing mediums--the ability
to broadcast distinct 5.1 multichannel audio.
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What HD Radio Needs to WOW Today’s Radio
Listeners You've probably been enjoying Multichannel 5.1 home
theater audio for a while now. You might even have multichannel SACD
or DVD-Audio music discs. So why not 5.1 radio broadcasts? Telos /
Omnia partners Fraunhofer Labs have devised a way to deliver discrete
5.1 using HD Radio. Read our position paper to find out why we think
that 5.1 may be HDFM radio's "killer app."
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5.1
Surround: For Real On Radio? What programmers and Ops Managers
need to know about 5.1-Channel for Broadcast. What is it, and why
should you care? Written by Telos General Manager Denny Sanders, a
former PD, this paper looks at 5.1 Surround from a perspective
programming will relate to.
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Ethernet for Studio Audio Systems
Steve Church details Livewire, new Telos technology that enables
transport of live, uncompressed broadcast audio using
standards-based computer
networking.
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A Network Enabled Radio Console Architecture
The world around us has become increasingly networked -- why not
broadcast audio consoles? Michael Dosch outlines the advantages of
networking broadcast studios, and how it can be accomplished.
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Troubleshooting The Public Switched
Telephone Network, or, How do you tell the Telco the problem is
in their network? Sooner or later, every broadcaster faces the
inevitable: trying to fix Telco problems beyond their control. Even
when you know the answer, how do you tell the technician? Read Rolf
Taylor's informative (and entertaining) White Paper for some practical
tips.
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Multi-Channel Splitting Algorithm for AAC
and AAC-LD Encoded Audio -- Telos' Anton Thimet and Joseph
Zolyak present an explanation of how Telos Zephyr Xstream ISDN
transceivers split-and-recombine high-quality audio streams across
multiple digital connections.
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On Beer and Audio
Coding: Why Something Called AAC is Cooler Than a Pilsner, and How It Got To Be
That Way -- MPEG4 AAC, the newest ISO/IEC compression/decompression
standard, is pretty astonishing. It achieves true CD quality at very low
bitrates, and the special AAC-LD (Low Delay) mode delivers quality comparable to
MPEG Layer 3 with just 55ms transmission times! We've included AAC and AAC-LD
into our Zephyr XStream
codec; in this White Paper, Steve Church explains AAC's applications and
benefits for broadcasters.
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Using T1, ISDN and DSL Telco Lines In Consolidated Radio Facilities
-- Steve Church talks about how to get the most from digital phone lines in
today's complex radio studios.
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ISDN for
Studio Call-in Talk Systems -- ISDN for talkshows? Yes, and the upside
is enormous. Read Steve Church's White Paper and see how your plant could
benefit.
 ISDN vs. DSL Revisited – Making IP work for Remotes – While
ISDN is a perfect fit for broadcast applications, IP is everywhere and ISDN
is getting harder to get. Just what are the differences and what does it
take to make IP a practical alternative for remote broadcasts. Are generic
Internet connections like DSL or WiFi suitable for broadcasters to send high-quality
audio over long distances in real time? Read this for the how the Zephyr/IP
gives broadcasters a new tool in their toolbox! -
Telephone Technology In The Digital Age: A
Tutorial for Broadcasters – Originally written as part of the TWOx12
manual, this paper is an easy-to-read, plain language tutorial for those looking
to expand their knowledge of broadcast phone systems. (Adobe Acrobat
download, 175 kb)
Tech Tips:
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Audio Coding Papers by Telos Systems:
Tech Papers by guest writers:
ISDN & Telco Resources:
Communications Protocols for Telos
products:
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Multi-Channel Splitting Algorithm for AAC
and AAC-LD Encoded Audio -- Telos' Anton Thimet and Joseph
Zolyak present an explanation of how Telos Zephyr Xstream ISDN
transceivers split-and-recombine high-quality audio streams across
multiple digital connections.
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TWOx12 communications specifications Protocol
specification v2.0, covers TWOx12 software versions through 2.x.
This protocol can also be used with TWOx12 software version 3.x in
"Single Studio mode" only. This protocol is obsolete: for full
support of the "Split Studio modes" in TWOx12 software version 3.x
and later, the protocol documented below should be used. 158k
self-extracting archive includes demonstration program.
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Series 2101 /TWOx12 Software Development Kit: The
Series 2101 SDK is provided for third-party programmers who wish to
develop software that interfaces with Series 2101 and TWOx12 (version
3.x and higher) equipment. This is a
two-part download:
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First, download this
document outlining the Series 2101 API (Adobe Acrobat
document; right-click on link to download).
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Second, download
the SDK from our public FTP server (self-extracting archive,
820k).
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