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 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: Fizzy soda water could be key to clean manufacture of flat wonder material: Graphene

Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.

As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...

Im Focus: Exotic quantum states made from light: Physicists create optical “wells” for a super-photon

Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.

Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...

Im Focus: Circular RNA linked to brain function

For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.

While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...

Im Focus: RAVAN CubeSat measures Earth's outgoing energy

An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.

The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...

Im Focus: Scientists shine new light on the “other high temperature superconductor”

A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.

Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Call for Papers – ICNFT 2018, 5th International Conference on New Forming Technology

16.08.2017 | Event News

Sustainability is the business model of tomorrow

04.08.2017 | Event News

Clash of Realities 2017: Registration now open. International Conference at TH Köln

26.07.2017 | Event News

 
Latest News

A Map of the Cell’s Power Station

18.08.2017 | Life Sciences

Engineering team images tiny quasicrystals as they form

18.08.2017 | Physics and Astronomy

Researchers printed graphene-like materials with inkjet

18.08.2017 | Materials Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>