Featured Research

from universities, journals, and other organizations

Bell Labs Developing Stereo Sound For Desktop Communications

Date:
January 5, 2000
Source:
Bell Labs/lucent Technologies
Summary:
Scientists from Bell Labs, the research and development arm of Lucent Technologies have announced a technological breakthrough in audio research, for the first time making it possible to deliver full-duplex stereo sound in an audio or video conference.

Murray Hill, NJ (Dec. 16, 1999) -- Scientists from Bell Labs, the research and development arm of Lucent Technologies today announced a technological breakthrough in audio research, for the first time making it possible to deliver full-duplex stereo sound in an audio or video conference.

Related Articles


The Bell Labs stereo technology can be used in an Internet Protocol (IP) environment and incorporated into both teleconferencing and video conferencing systems. Stereo conferencing technology gives participants a better way to hear and comprehend multiple streams of conversation.

"With the rise of IP-based audio and videoconferencing, we are moving into a new age of multimedia communications that focuses on realism," says Fred Juang, head of Bell Labs acoustics and speech research department. "To deliver on the promise of virtual collaborations, we need to recreate lifelike audio and video renditions of a physical setting. Stereo sound gives us some of the natural audio cues we get from our ears in a live meeting about who is speaking."

In creating the first stereo-based conferencing technology, Bell Labs researchers needed to tackle the extremely complex problem of stereo acoustic echo cancellation. Without echo cancellation, users would hear feedback that occurs when a speaker and a microphone are too close.

Current echo cancellation relies on an audio technique that uses single channel cancellation, which identifies one acoustic path between the speaker and the microphone. In the stereo environment this technique does not work because the sound is carried in multiple acoustic paths between the speaker and the microphone.

To overcome this, Bell Labs audio researchers developed new algorithms that modified the stereo signals in a way that allows for the correct path identification without harming the stereo sound.

Bell Labs stereo conferencing technology is expected to be integrated into a number of Lucent teleconferencing and video conferencing products including Lucent Collaborative Video, an IP-based videoconferencing system that delivers high-quality video and audio to multiple parties in a PC-based solution. Lucent also plans to license the technology to other companies for use in their conferencing products.

Lucent Technologies, headquartered in Murray Hill, N.J., designs, builds, and delivers a wide range of public and private networks, communications systems and software, data networking systems, business telephone systems, and microelectronics components. Bell Labs is the research and development arm for the company. For more information on Bell Labs multimedia communications research visit http://www.multimedia.bell-labs.com or for more on Lucent Technologies, visit http://www.lucent.com.


Story Source:

The above story is based on materials provided by Bell Labs/lucent Technologies. Note: Materials may be edited for content and length.


Cite This Page:

Bell Labs/lucent Technologies. "Bell Labs Developing Stereo Sound For Desktop Communications." ScienceDaily. ScienceDaily, 5 January 2000. <www.sciencedaily.com/releases/2000/01/000105050516.htm>.
Bell Labs/lucent Technologies. (2000, January 5). Bell Labs Developing Stereo Sound For Desktop Communications. ScienceDaily. Retrieved April 1, 2015 from www.sciencedaily.com/releases/2000/01/000105050516.htm
Bell Labs/lucent Technologies. "Bell Labs Developing Stereo Sound For Desktop Communications." ScienceDaily. www.sciencedaily.com/releases/2000/01/000105050516.htm (accessed April 1, 2015).

Share This


More From ScienceDaily



More Matter & Energy News

Wednesday, April 1, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Voice-Controlled GPS Helmet to Help Bikers

Voice-Controlled GPS Helmet to Help Bikers

Reuters - Innovations Video Online (Apr. 1, 2015) Motorcyclists will no longer have to rely on maps or GPS systems, both of which require riders to take their eyes off the road, once a new Russian smart helmet goes on sale this summer. Jim Drury reports. Video provided by Reuters
Powered by NewsLook.com
Wound-Healing Laser Soon to Be a Reality Israeli Scientist

Wound-Healing Laser Soon to Be a Reality Israeli Scientist

Reuters - Innovations Video Online (Apr. 1, 2015) Israeli scientists says laser bonding of tissue allows much faster healing and less scarring. Amy Pollock has more. Video provided by Reuters
Powered by NewsLook.com
7-Year-Old Girl Gets 3-D Printed 'robohand'

7-Year-Old Girl Gets 3-D Printed 'robohand'

AP (Mar. 31, 2015) Although she never had much interest in prosthetic limbs before, Faith Lennox couldn&apos;t wait to slip on her new robohand. The 7-year-old, who lost part of her left arm when she was a baby, grabbed it as soon as it came off a 3-D printer. (March 31) Video provided by AP
Powered by NewsLook.com
Dutch Architects Show Off 3D House-Building Prowess

Dutch Architects Show Off 3D House-Building Prowess

Reuters - Innovations Video Online (Mar. 31, 2015) Dutch architects are constructing a 3D-printed canal-side home, which they hope will spark an environmental revolution in the house-building industry. Jim Drury reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins