Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Scuppering the pirates improves audio quality

10.08.2007
A new digital watermarking system not only protects music and media files from online pirates but also ensures that the quality for legitimate users is as good as it gets.

Shervin Shirmohammadi Hani Jabbour, and Jiying Zhao of the Discover lab at the University of Ottawa, Canada describe their new approach to beating music pirates today in Inderscience's International Journal of Advanced Media and Communication.

Streaming media and audio files enriches the internet experience for millions of users the world over. However, content creators, such as internet radio stations and podcasters face two major issues in delivering such materials.

The first is ensuring that their high-quality audio content reaches the user's speakers or headphones with high fidelity. The second involves the need to prevent users from duplicating their audio content and either re-selling it or distributing illegally to other users. As high-speed internet access and pervasive computing, such as smart phones and personal digital assistants (PDAs) become more common the opportunities for content pirates grow.

There are several audio watermarking systems available for copyright protection, but according to Shirmohammadi and colleagues few of these also act as quality of service (QoS) monitoring systems.

The advantage of tying together copyright protection and QoS is that the system would have a smaller download footprint than the two alone. The QoS part of the system would allow the end user to choose the quality level for their download depending primarily on the speed of their internet connection or the sound quality of the device they are using. It would also mean that should copyright be broken then the quality of the audio download would suffer, making a pirate copy useless.

The researchers have now developed a copyright-QoS module that can be incorporated into an audio stream transmitted over the Internet. The module provides audio watermarking, copyright protection, data integrity, and authenticity together with QoS monitoring. These can all be fine-tuned for different applications, such as public and private streams, depending on the intended use.

The system involves using a computer algorithm to embed an image within the audio file. The image acts as a digital watermark but does not interfere with the sound. Should there be loss of quality during the download, then the image interpretation component of the audio streaming software on the user's device will alert the user to a problem, providing the QoS aspect of the system.

"The prototype system is transparent," say the researchers," and works ubiquitously on any captured audio." The team has tested its performance and demonstrated the feasibility of real-time audio streaming with QoS and copy protection. The next step will be to extend the work beyond streaming audio to compressed formats, such as the well-known mp3 file, for example.

Jim Corlett | alfa
Further information:
http://www.inderscience.com

More articles from Communications Media:

nachricht Product placement: Only brands placed very prominently benefit from 3D technology
07.07.2016 | Alpen-Adria-Universität Klagenfurt

nachricht NASA Goddard network maintains communications from space to ground
02.03.2016 | NASA/Goddard Space Flight Center

All articles from Communications Media >>>

The most recent press releases about innovation >>>

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

Im Focus: Electron highway inside crystal

Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.

Topological insulators are currently the hot topic in physics according to the newspaper Neue Zürcher Zeitung. Only a few weeks ago, their importance was...

Im Focus: Significantly more productivity in USP lasers

In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.

Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...

Im Focus: Shape matters when light meets atom

Mapping the interaction of a single atom with a single photon may inform design of quantum devices

Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

Researchers identify potentially druggable mutant p53 proteins that promote cancer growth

09.12.2016 | Life Sciences

Scientists produce a new roadmap for guiding development & conservation in the Amazon

09.12.2016 | Ecology, The Environment and Conservation

Satellites, airport visibility readings shed light on troops' exposure to air pollution

09.12.2016 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>