ambisonics - cambridge wireless · 2018-07-14 · the world’s quietest room 1940: a bell...

Ambisonics

Dr Brigitta Zics & Tamás Czuper b.zics@rave.ac.uk & t.czuper@rave.ac.uk

Sound Immersion

Multichannel Audio Technologies

Ambisonics is a full-sphere surround sound technique: in addition to the horizontal plane, it covers sound sources above and below the listener.

3D sound is a sound as we hear it naturally.

3D sound allows us to find the location of the sound source.

A Brief History

Sebastian Kaulitzki/Getty

Binaural technology models human anatomy and uses psycho-acoustic algorithms.

A head-related transfer function (HRTF) is a response that characterizes how an ear receives a sound from a point in space.

Head-related transfer function (HRTF)

A head-related transfer function (HRTF) is a response that characterizes how an ear receives a sound from a point in space.

Audio Communication Group of TU Berlin

Head-related transfer function test site

The World’s Quietest Room

1940: A Bell Laboratories’s Murray Hill Anechoic Chamber.

Michael Gerzon Audio Pioneer

Ambisonics is a flexible system in that the encoding is separated from

the decoding.

Encoding Decoding

Ambisonics 360 vs Surround sound

University of Denmark

Audio-Visual Immersion Lab, Technical University of Denmark

University of Surrey ( Soundsphere )

Soundsphere at University of Surrey

The Cube at Virginia Tech

4-Channel B-format – First-Order Ambisonics B-format

amplitude information

spatial information

Daniel Courville 2007

360 soundfield

dearVR

WAVES B360 Ambisonic

Encoder Nx VirtualMix

Room

http://www.brigittazics.com/work/serendipitous-murmurations/

ATK ( Ambisonic Toolkit ) Model

dearVR

WAVES B360 Ambisonic

Encoder Nx VirtualMix

Room

Max/PD: HoaLibrary Max/PD:ICTS Ambisonics

Demo

Dr Brigitta Zics & Tamás Czuper b.zics@rave.ac.uk & t.czuper@rave.ac.uk