Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Surround sound can be delivered to consumers more efficiently

09.09.2004


Recent research conducted by scientists at the University of Surrey in collaboration with Bang & Olufsen and the BBC, shows that surround sound can be delivered to the consumer more efficiently by taking into account the results of perceptual tests. Although improvements in the audio quality of consumer entertainment systems such as DVDs, CDs, digital TV, home cinema and computer games are technically possible, they may no longer be necessary. In fact, the intelligent limiting of sound quality, based on the results of perceptual tests using real programme material, could enable media companies to use network capacity to increase the number and types of services available, while still delivering good surround sound quality.



The research also revealed that if visual and audio images are presented simultaneously, such as when watching TV and films or playing computer games, subjects’ perception of sound quality was altered.

Describing the outcomes of the project, Dr Francis Rumsey, the project leader, said “we were surprised to find just how much we could reduce the sound quality of some of the channels in a typical five channel home cinema system without our listening subjects reporting a large change in overall quality. These were expert listeners, highly trained as sound engineers, so they would have noticed if there were major changes. Although we can’t claim that all material can be delivered with these sorts of compromises, there is certainly a lot of typical music and audio-visual material that could be treated in this way. We have developed a prototype expert system that can be used to predict the resulting quality when certain changes are made to the sound quality of specific audio channel. This could be used by broadcasters and other media delivery organisations or equipment manufacturers to optimise the use of their networks. It means that they can still deliver good quality surround sound to their audiences without necessarily taking up as much bandwidth as would be needed normally. Our results could be used in conjunction with existing technology that is used to squeeze high quality audio into a small space, such as MPEG and Dolby Digital coders.”

Stuart Miller | alfa
Further information:
http://www.surrey.ac.uk

More articles from Communications Media:

nachricht New Technologies for A/V Analysis and Search
13.04.2017 | Fraunhofer-Institut für Digitale Medientechnologie IDMT

nachricht On patrol in social networks
25.01.2017 | Fraunhofer-Institut für Arbeitswirtschaft und Organisation IAO

All articles from Communications Media >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Neutron star merger directly observed for the first time

University of Maryland researchers contribute to historic detection of gravitational waves and light created by event

On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...

Im Focus: Breaking: the first light from two neutron stars merging

Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.

Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....

Im Focus: Smart sensors for efficient processes

Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).

When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...

Im Focus: Cold molecules on collision course

Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.

How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...

Im Focus: Shrinking the proton again!

Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.

It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ASEAN Member States discuss the future role of renewable energy

17.10.2017 | Event News

World Health Summit 2017: International experts set the course for the future of Global Health

10.10.2017 | Event News

Climate Engineering Conference 2017 Opens in Berlin

10.10.2017 | Event News

 
Latest News

Electrode materials from the microwave oven

19.10.2017 | Materials Sciences

New material for digital memories of the future

19.10.2017 | Materials Sciences

Physics boosts artificial intelligence methods

19.10.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>