Press Esc to close
Tuesday 29 July 2014
News updated at 4:12 PM IST
Weather
Max: 0°C
Min : 0°C
In Bangalore
Sunny day

Now, giant ball speakers for 3D surround sound

London, Dec 10, 2012, PTI:

Music all around

Researchers are developing a new 3D super-surround-sound system by experimenting with a giant sphere that has 40 loudspeakers on its surface.

Commercial surround sound systems pan audio back and forth between speakers, but physically reconstructing a sound field could produce an experience much more similar to what you hear in the real world.

By knowing how different sound fields interfere within the space, researchers can choose the position of a virtual source and sculpt the resulting soundscape by controlling the signal sent to each speaker, the New Scientist reported. “This type of system can be considered to be analogous to a video hologram. If we can reproduce all the sound that goes through the surface of the sphere we can accurately reproduce what’s inside,” says Fazi.

The team recently synthesised a concert inside the sphere. Different instruments
were first recorded on separate tracks, like in a studio recording, then virtually repositioned in the space at different elevations, angles and distances from the centre.


During a demo, people listened to the virtual concert as well as to the musicians playing live and could hardly tell the difference.

“We achieved a high degree of realism,” says Fazi.

Now the challenge is to scale the system down so it can be used in cinemas, at home and in small devices.

Devices like cellphones are too small to accommodate many speakers, so the researchers are looking at how perceptual tricks could reduce complexity while retaining the same sound quality.

Go to Top

Photo Gallery
India's Devendro Laishram, left, throws a left jab at Sri Lanka's Madushan Gamage in the ...

India's Devendro Laishram, left, throws a left jab at Sri Lanka's Madushan Gamage in the ...

A Muslim family have their iftar (breaking of fast) meal on the last day of the holy fasting...

A Muslim family have their iftar (breaking of fast) meal on the last day of the holy fasting...

A Muslim woman offers evening prayers on the last day of the holy fasting month of...

A Muslim woman offers evening prayers on the last day of the holy fasting month of...

India's Mandeep Jangra, right, lands a punch on Jamaica's Kestna Davis during their men's...

India's Mandeep Jangra, right, lands a punch on Jamaica's Kestna Davis during their men's...

England's Sam Robson, left, fields the ball beside four other slips ...

England's Sam Robson, left, fields the ball beside four other slips ...

A Muslim woman performs ablution before having iftar meal on the last day of the holy month...

A Muslim woman performs ablution before having iftar meal on the last day of the holy month...

Police take top Maoist leader Sabyasachi Panda while taking him to court in Berhampur...

Police take top Maoist leader Sabyasachi Panda while taking him to court in Berhampur...

The launch of Science Express biodiversity special (SEBS) train in New Delhi...

The launch of Science Express biodiversity special (SEBS) train in New Delhi...

England's Ian Bell hits a shot during the second day of the third cricket test...

England's Ian Bell hits a shot during the second day of the third cricket test...

Bollywood music director Anu Malik, actor Sonam Kapoor, filmmaker Farah Khan and Pakistani...

Bollywood music director Anu Malik, actor Sonam Kapoor, filmmaker Farah Khan and Pakistani...

Copyright 2014, The Printers (Mysore) Private Ltd., 75, M.G Road, Post Box 5331, Bangalore - 560001
Tel: +91 (80) 25880000 Fax No. +91 (80) 25880523