Press Esc to close
Sunday 26 April 2015
News updated at 12:50 AM IST
Weather
Max: 33.4°C
Min : 21.6°C
In Bengaluru
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
Sadhus standing on the debris of a temple that collapsed following a tremor in Ayodhya...

Sadhus standing on the debris of a temple that collapsed following a tremor in Ayodhya...

School children come out of their class rooms folliowing s tremor in Lucknow...

School children come out of their class rooms folliowing s tremor in Lucknow...

The debris of a collapsed building after a powerful earthquake in Kathmandu...

The debris of a collapsed building after a powerful earthquake in Kathmandu...

A damaged road after a powerful earthquake in Kathmandu...

A damaged road after a powerful earthquake in Kathmandu...

Indian security personnel stands near a collapsed house after an earthquake...

Indian security personnel stands near a collapsed house after an earthquake...

A damaged road after a powerful earthquake in Kathmandu...

A damaged road after a powerful earthquake in Kathmandu...

A car stands under the weight of an electric pole after it collapsed following an earthquake...

A car stands under the weight of an electric pole after it collapsed following an earthquake...

Earthquake at Durbar Square in Kathmandu..

Earthquake at Durbar Square in Kathmandu..

Rescuers clear the debris at Durbar Sqaure after an earthquake in Kathmandu...

Rescuers clear the debris at Durbar Sqaure after an earthquake in Kathmandu...

People stand around damage caused by an earthquake at Durbar Square in Kathmandu...

People stand around damage caused by an earthquake at Durbar Square in Kathmandu...

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