In Broadcast - October 2012 - 50

I N T E R N A T I O N A L

N E W S

WWW.INBROADCAST.COM | ISSUE 13 - OCTOBER 2012

InTECH

Fraunhofer IIS Streams 5.1 Surround With HE-AAC
At IBC, Fraunhofer IIS demonstrated the native support of High-Efficiency Advanced Audio Coding (HE-AAC) multichannel in Android 4.1. This support enables playback of high-quality 5.1 surround content on Android 4.1 phones and tablets connected via HDMI to a home theatre system. In combination with adaptive HTTP streaming technologies such as MPEG DASH, Android devices become true delivery platforms allowing service providers to easily offer their content in the most efficient, highest-quality MPEG standards available today. “With the inclusion of HE-AAC multichannel in Android 4.1, users will be able to enjoy full surround sound of content delivered to Android phones and tablets as easily as they have with BluRay or DVD titles. Connecting an HDMI cable from their existing audio/video receiver or TV set to the MHL or HDMI connector on Android devices will deliver foolproof surround audio and video,” says Robert Bleidt, Division General Manager at Fraunhofer USA Digital Media Technologies. HE-AAC multichannel is part of the new Fraunhofer FDK AAC codec library for Android and replaces the previous AAC and HE-AAC software. It is included in Android since version 4.1 and delivers open source Fraunhofer implementations of the ISO MPEG audio codecs AAC, HE-AAC, HE-AACv2, and AAC-ELD to the Android community. Over the last few years, the AAC audio codec family has played an increasingly important role as an enabling technology for state-ofthe-art multimedia systems. The codecs combine high audio quality with very low bit-rates, allowing for an impressive audio experience even over channels with limited bandwidth, such as those in broadcasting or mobile multimedia streaming. The AAC audio coding family also includes special low delay versions, which allow high quality two-way communication. The most popular AAC codec, also known as AAC-LC, provides audio quality up to transparency. Therefore, AAC-LC fulfills even the highest requirements for broadcasters of stereo and multichannel sound. With sampling rates ranging from 8 kHz to up to 192 kHz, bit-rates of up to 256 kbit/s per channel, and support for up to 48 channels, AAC-LC is one of the most flexible audio codecs available today. HE-AAC is the combination of AAC-LC and the parametric SBR (Spectral Band Replication) tool, which allows the further reduction of overall bit-rate while maintaining excellent audio quality. Typical data rates used for HE-AAC are 48-64 kbit/s for stereo and 160 kbit/s for 5.1 multichannel signals. Like AACLC, HE-AAC supports sampling rates from 8 to 192 kHz and up to 48 channels, as well as audio specific metadata. HE-AAC v2 adds the Parametric Sound (PS) tool to HE-AAC. A parametric approach to coding the stereo signal is applied, resulting in even further reduction of bit-rate. Typical bit-rates of HE-AACv2 are 24 to 32 kbit/s for a stereo signal. AAC and HE-AAC are used in a large number of applications today and are especially established as the main audio codecs in Internet applications besides mp3. HE-AACv2 is widely established

The Fraunhofer IIS mobile streaming demonstration at IBC

50

Fraunhofer IIS representatives meet attendees at the show

in state-of-the-art TV broadcast systems. The audio codec is part of the DVB toolbox and mandatory in most countries that recently introduced the second generation of terrestrial TV, such as the UK and Sweden. Additionally, HE-AAC is an established part of the Smart TV environment. For example, it is the mandatory codec for the Hybrid Broadcast Broadband TV (HbbTV) data service in Europe. As a result, all HD-capable TV receiver devices, such as TV sets and settop boxes being sold in Europe and South America today, support HEAAC. All major broadcast encoder manufacturers included HE-AAC into their devices long ago. Of course, HE-AACv2 supports all relevant broadcast metadata. HE-AAC is also the dominating audio codec when it comes to streaming. All major streaming and media platforms support HE-AAC, including Flash, Silverlight, Windows Media Player, Winamp, and iTunes. The operating systems Mac OS X and Windows come with HE-AAC as do the mobile systems iOS, Android, Windows Phone, Symbian and BlackBerry. As HE-AAC has the dynamic ability to change audio bit-rates in order to adapt to changing network conditions, the codec will additionally be used in applications based on the new adaptxive HTTP streaming standard MPEG DASH. HE-AAC enables the best possible DASH streaming experience from bit-rates as low as 24 kbit/s for bandwidth-limited stereo operations to 160 kbit/s and more for high-

quality surround audio. HE-AACv2 is also an important part of streaming standards in the consumer electronics domain, playing an integral role in electronics including Open IPTV Forum, ATIS, HbbTV, and DLNA. As a consequence, almost all digital TVs, BluRay players, set-top boxes and gaming consoles support the codec. This widespread support of HEAACv2 makes it the codec of choice for content providers. That’s why most web radios, such as Pandora, Aupeo, Hulu and BBC iPlayer, are based on HE-AACv2. MPEG codecs are not only widely used in broadcast, streaming and music distribution but also in communications’ applications. The communications’ codecs of the AAC family are of particular popularity in high-quality conferencing and video telephony systems, as they enable service providers and operators to offer Full-HD Voice services. Whereas traditional telephony only transmits an audio bandwidth of up to 3.4 kHz, Full-HD Voice provides the full audible audio spectrum of 14 kHz and more. As a result, Full-HD Voice calls sound as clear and natural as if talking to someone in the same room. The Full-HD Voice codecs of the AAC family are Low Delay AAC (AAC-LD), Enhanced Low Delay AAC (AAC-ELD), and Enhanced Low Delay AACv2 (AAC-ELDv2). The latter can provide Full-HD Voice quality in stereo at bitrates as low as 24 kbps. ■


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In Broadcast - October 2012

Table of Contents for the Digital Edition of In Broadcast - October 2012

In Broadcast - October 2012
Contents
PO Group Invest in 4k SGO Mistika Solution
BBC Entertainment Launches in Malaysia
AJA KI Pro Eases Elton John Show Workflow Transition
Bolshoi Theatre Install RTS System
Canal+ Sports Opts for Orad Power Wall
SIS LIVE Rolls Out OB 14 HD Truck
OCC’s Bill Smith Answers on the Technical Challenges
4KTV? Not So Fast!
ChyronIP Powers Graphics on Newtek Tricaster
Take Control With Rascular’s Helm
In Broadcast - October 2012 - Intro
In Broadcast - October 2012 - In Broadcast - October 2012
In Broadcast - October 2012 - 2
In Broadcast - October 2012 - Contents
In Broadcast - October 2012 - PO Group Invest in 4k SGO Mistika Solution
In Broadcast - October 2012 - 5
In Broadcast - October 2012 - BBC Entertainment Launches in Malaysia
In Broadcast - October 2012 - 7
In Broadcast - October 2012 - 8
In Broadcast - October 2012 - 9
In Broadcast - October 2012 - 10
In Broadcast - October 2012 - 11
In Broadcast - October 2012 - 12
In Broadcast - October 2012 - 13
In Broadcast - October 2012 - 14
In Broadcast - October 2012 - 15
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In Broadcast - October 2012 - 25
In Broadcast - October 2012 - 26
In Broadcast - October 2012 - 27
In Broadcast - October 2012 - 28
In Broadcast - October 2012 - 29
In Broadcast - October 2012 - AJA KI Pro Eases Elton John Show Workflow Transition
In Broadcast - October 2012 - 31
In Broadcast - October 2012 - 32
In Broadcast - October 2012 - 33
In Broadcast - October 2012 - 34
In Broadcast - October 2012 - 35
In Broadcast - October 2012 - 36
In Broadcast - October 2012 - 37
In Broadcast - October 2012 - Bolshoi Theatre Install RTS System
In Broadcast - October 2012 - 39
In Broadcast - October 2012 - 40
In Broadcast - October 2012 - 41
In Broadcast - October 2012 - Canal+ Sports Opts for Orad Power Wall
In Broadcast - October 2012 - 43
In Broadcast - October 2012 - 44
In Broadcast - October 2012 - 45
In Broadcast - October 2012 - 46
In Broadcast - October 2012 - 47
In Broadcast - October 2012 - 48
In Broadcast - October 2012 - SIS LIVE Rolls Out OB 14 HD Truck
In Broadcast - October 2012 - 50
In Broadcast - October 2012 - 51
In Broadcast - October 2012 - 52
In Broadcast - October 2012 - 53
In Broadcast - October 2012 - OCC’s Bill Smith Answers on the Technical Challenges
In Broadcast - October 2012 - 55
In Broadcast - October 2012 - 4KTV? Not So Fast!
In Broadcast - October 2012 - 57
In Broadcast - October 2012 - 58
In Broadcast - October 2012 - 59
In Broadcast - October 2012 - ChyronIP Powers Graphics on Newtek Tricaster
In Broadcast - October 2012 - 61
In Broadcast - October 2012 - 62
In Broadcast - October 2012 - 63
In Broadcast - October 2012 - Take Control With Rascular’s Helm
In Broadcast - October 2012 - 65
In Broadcast - October 2012 - 66
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In Broadcast - October 2012 - S1
In Broadcast - October 2012 - S2
In Broadcast - October 2012 - S3
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In Broadcast - October 2012 - S5
In Broadcast - October 2012 - S6
In Broadcast - October 2012 - S7
In Broadcast - October 2012 - S8
In Broadcast - October 2012 - S9
In Broadcast - October 2012 - S10
In Broadcast - October 2012 - S11
In Broadcast - October 2012 - S12
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