Low bit rates and HD Voice launches at MWC - PSNEurope

Low bit rates and HD Voice launches at MWC

This week's Mobile World Congress (27 February-1 March) saw Fraunhofer IIS launch a lower bit rate version of HE-AAC and give the world's first demonstrations of Full-HD Voice calls over a LTE network, writes Kevin Hilton.
Author:
Publish date:

This week's Mobile World Congress (27 Feb-1 March) saw Fraunhofer IIS launch a lower bit rate version of HE-AAC and give the world's first demonstrations of Full-HD Voice calls over a LTE network, writes Kevin Hilton. Extended HE-AAC (High Efficiency Advanced Audio Coding) has been designed to handle both speech and music. It is claimed to improve audio quality at bit rates in the region of 8kb/s, with the capability to improve the quality of existing low bit rate services and carry more audio channels at a given bit rate. "We're trying to develop codecs for every application," comments Fraunhofer IIS spokesman Matthias Rose. "For the future, bandwidth will continue to be a valuable commodity, which is why low bit rate codecs are being developed." Full-HD Voice is hailed as the future for mobile communications and is being used in broadcast for radio reporting, with companies including Glensound Electronics producing specific units. During the Mobile World Congress in Barcelona Fraunhofer demonstrated Full-HD Voice on Android phones using a LTE (long term evolution) 4G network (pictured). An AAC-ELD (enhanced low delay) codec was integrated into the Android handset to make it ready for Full-HD Voice. "Every day, millions of users already make Full-HD Voice calls over IP connections,” said Harald Popp, head of the Multimedia Realtime Systems department at Fraunhofer IIS. "With the introduction of LTE, now is the perfect time to introduce Full-HD Voice to mobile communications as well." www.iis.fraunhofer.de

Related

27787.jpg

Cross-border HD Voice broadcast opportunity

In a world first telecom group Orange has connected the mobile networks of two countries using HD Voice. The higher quality link between Romania and Moldova could signal greater flexibility for broadcasters now using HD Voice for audio reporting.

28529.jpg

HD Voice tracks Olympic Torch

The Olympic Flame began its 70 day journey round and across the UK and other islands last Saturday (19 May), with its progress monitored by broadcast coverage relying on HD Voice technology for TV audio and radio reports, writes Kevin Hilton.

28931.jpg

Broadcast phones and the Full-HD audio treatment

The telephone is an important but problematic tool for broadcasters. The main drawback is it always sounds like a phone. But, as Kevin Hilton reports, new technologies are changing that and could make the ubiquitous mobile the only thing needed for general communications and live location reporting.

27460.jpg

DTS launches Ultra HD audio at CES

The next generation of 4k television screens is among the highlights at this week's Consumer Electronics Show (CES) in Las Vegas and DTS has thrown audio into the mix with a complementary system for creating, distributing and playing back spatial sound.

27154.jpg

RTVE-EBU transmit terrestrial Ultra HD

Ultra High Definition continues to spread in Europe after Spanish public broadcaster RTVE staged terrestrial transmissions based on the format, featuring MPEG1-Layer3 audio, in collaboration with the European Broadcasting Union (EBU).

32884.jpg

HD OBs - trucking on a road near you

They're everywhere - at cricket grounds, football stadia, conference venues, theatres, local arts centres or just generally slogging up and down motorways - and, as Kevin Hilton reports, there looks like no stopping the growing number of high definition outside broadcast trucks. This perception is confirmed by figures in the latest edition of the HD OB Van Directory, which details 42 new vehicles across the Europe, Middle East and Africa region.

Mozart gains from Radio 3 HD Sound

The complete works of Mozart are being broadcast by BBC Radio 3 on its website over the first 12 days of this month using the new high bit-rate HD Sound format. The technology was launched during December last year, after tests during the 2010 Proms season and on Radio 2's Electric Proms broadcast, writes Kevin Hilton.