Press Esc to close
Friday 01 July 2016
News updated at 12:51 AM IST
Weather
Max: 26.3°C
Min : 20.3°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
Villagers looking at a one horned rhinoceros that strayed in...

Villagers looking at a one horned rhinoceros that strayed in...

Bollywood actor Irrfan Khan during the Pro Kabaddi match between Jaipur....

Bollywood actor Irrfan Khan during the Pro Kabaddi match between Jaipur....

Illuminated Mysuru Palace during the marriage....

Illuminated Mysuru Palace during the marriage....

Vice President Hamid Ansari, Congress...

Vice President Hamid Ansari, Congress...

Fans holds an national soccer team jersey with the name and number of Lionel Messi...

Fans holds an national soccer team jersey with the name and number of Lionel Messi...

Virat Kohli interacts with children at the launch of Stepathlon Kids...

Virat Kohli interacts with children at the launch of Stepathlon Kids...

Pope Francis, left, and retired Pope Benedict XVI embrace during a ceremony...

Pope Francis, left, and retired Pope Benedict XVI embrace during a ceremony...

Horse-mounted Policemen seen at a road in Kolkata...

Horse-mounted Policemen seen at a road in Kolkata...

An egret takes off in New Delhi on Tuesday...

An egret takes off in New Delhi on Tuesday...

A typist attends a customer at a street flooded after heavy rains outside Court complex...

A typist attends a customer at a street flooded after heavy rains outside Court complex...

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