Press Esc to close
Thursday 18 December 2014
News updated at 1:04 PM IST
Weather
Max: 26.2°C
Min : 19.5°C
In Bengaluru
Generally cloudy

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
School children in Ahmedabad praay as they pay tributes...

School children in Ahmedabad praay as they pay tributes...

School children of Gurgaon pay tributes to the children killed in Pakistan...

School children of Gurgaon pay tributes to the children killed in Pakistan...

Kashmiri Muslim women pray outside the shrine...

Kashmiri Muslim women pray outside the shrine...

School girls take part in a protest against attack at a Peshawar school...

School girls take part in a protest against attack at a Peshawar school...

A Pakistani man comforts a student standing at the bedside of a boy who was injured in a Taliban...

A Pakistani man comforts a student standing at the bedside of a boy who was injured in a Taliban...

Pakistani parents escort their children outside a school attacked by the Taliban in Peshawar...

Pakistani parents escort their children outside a school attacked by the Taliban in Peshawar...

Ambulances carry injured people outside a school attacked by the Taliban in Peshawar, Pakistan...

Ambulances carry injured people outside a school attacked by the Taliban in Peshawar, Pakistan...

Relatives of a student, who was injured during an attack by Taliban gunmen on the Army Public...

Relatives of a student, who was injured during an attack by Taliban gunmen on the Army Public...

A plainclothes security officer escorts students rescued from nearby school during a Taliban...

A plainclothes security officer escorts students rescued from nearby school during a Taliban...

A Pakistani army soldier takes position on a bunker close to a school under attack by Taliban...

A Pakistani army soldier takes position on a bunker close to a school under attack by Taliban...

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