Friday, August 29, 2014
Search
  
Submit your own News for
inclusion in our Site.
Click here...
Breaking News
UMC To Partner With Fujitsu On Chip Production
Samsung, LG Introduce New Smartwatches
Sharp, Pioneer Dissolve Their Capital Alliance
Nero 2015 is Coming At IFA
LaCie Ships the 48 TB Thunderbolt 2 Storage Solution
ALCATEL ONETOUCH Launches New Affordable Smartphones
ZOTAC Debuts the ZBOX PI320 pico
Dropbox Now Offers 1TB Pro plan for 10 Dollars
Active Discussions
help questions structure DVDR
Made video, won't play back easily
Questions durability monitor LCD
Questions fungus CD/DVD Media, Some expert engineer in optical media can help me?
CD, DVD and Blu-ray burning for Android in development
IBM supercharges Power servers with graphics chips
Werner Vogels: four cloud computing trends for 2014
Video editing software.
 Home > News > General Computing > NTT's L...
Last 7 Days News : SU MO TU WE TH FR SA All News

Thursday, January 05, 2006
NTT's Lossless Audio Compression Technology Becomes an MPEG Standard


NTT Corp. has announced that an audio lossless compression (lossless encoding) technology largely developed by the company was approved as an MPEG international standard specification dubbed "MPEG-4 ALS."

The technology is applicable for storing master data and transmitting high quality audio data, among other uses.

Lossless encoding is a compression technology, which can reproduce the original waveform data without a change of any bit. However, in terms of data compression rates, the technology is generally inferior to lossy encoding technologies such as MP3. The MPEG-4 ALS' data compression rates extend from 15% to 70%, depending on factors such as sampling frequencies and music genres.

Existing lossless compression technologies include Microsoft Corp.'s "Windows Media Audio Lossless," Apple Computer, Inc.'s "Apple Lossless" and free software such as "Monkeys," "FLAC" and "OptimFrog." NTT's latest technology boasts higher compression rates than these technologies, as well as a reduction in time required for decoding. According to the company, 30 seconds of audio data sampled at 48 KHz, for example, can be decoded in less than a second using the latest PCs. NTT also claimed the technology's other advantages over free software are more specific rights, including patents and long-term support for users.

NTT aims to start an organization to manage MPEG-4 ALS licensing under the MPEG LA in a year or so. Licensing is expected to be commercial. "Let's say, if Microsoft acquires an MPEG-4 ALS license and introduces the codec to Windows, anyone will be able to use MPEG-4 ALS freely," said a company spokesperson.

The MPEG-4 ALS format's sampling frequencies extend to 192 KHz. The technology can compress audio data consisting of 32-bit integers or floating points. It also can compress up to 65,536 channels at the same time. By utilizing this great simultaneous compression capability, applications could be broadened to include compression of data other than audio. For example, the technology can be used to simultaneously measure several hundreds of channels of data in a brain's magnetic field from different parts of the brain. The more related data between channels, the higher compression rates rise. In the abovementioned case of a brain's magnetic field, data compression rates are said to be around 15%.


Previous
Next
Philips' 3D Intelligent Display Solution        All News        Panasonic Unveils the Largest Plasma TV in the World
Nero Demonstrates AVC/H.264 High Profile Decoding IP Core at CES 2006     General Computing News      MP3 Gets Surround Sound

Source Link Get RSS feed Easy Print E-Mail this Message

Related News
New Video Compression Technology
CyberLink Releases MPEG-4 AVC Encoding Software To The Consumer Market - PowerEncoder MPEG-4 AVC
Renesas Technology Corp. adds Coding Technologies' MPEG-4 aacPlus to the SH-Mobile platform
Tektronix Releases New Tools for Next Generation Video Compression Standards
Mobile Broadcasting Corp Considers Video Codec Change from MPEG-4 to H.264
New World Headquarters For MPEG-4 AVC Development And Evaluation
MPEG-4 Audio Patent Pool Adds High-Efficiency AAC Profile License
New video codec from SONY
Orban releases MPEG-4 aacPlus streaming audio encoder
Mobile phone makers face MPEG4 patent royalties
Philips, Sigma Designs produce DVD recorder MPEG chips at SSMC, UMC
Hong Kong's ASTRI announces enhanced MPEG-4 codec

Most Popular News
 
Home | News | All News | Reviews | Articles | Guides | Download | Expert Area | Forum | Site Info
Site best viewed at 1024x768+ - CDRINFO.COM 1998-2014 - All rights reserved -
Privacy policy - Contact Us .