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The ear and brain perceive the vertical position of sounds by matching the timbre detected at the eardrum of a listener to timbre patterns built up by that individual over a long period of time. But the eardrum timbre depends dramatically on ear canal resonances between 1000 Hz and 6000 Hz that boost the pressure at the eardrum as much as 20 dB. These resonances are highly individual and are either eliminated or altered by headphones. In-head localization is the result. We have developed an app that uses an equal-loudness procedure to measure and restore the natural timbre. Accurate timbre and frontal localization are then perceived without head-tracking, and binaural recordings can be stunningly realistic.
Author (s): Griesinger, David
Affiliation:
David Griesinger Acoustics, Cambridge, MA, USA
(See document for exact affiliation information.)
AES Convention: 141
Paper Number:9620
Publication Date:
2016-09-06
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Session subject:
Spatial Audio
Permalink: https://aes2.org/publications/elibrary-page/?id=18424
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Griesinger, David; 2016; Accurate Timbre and Frontal Localization without Head Tracking through Individual Eardrum Equalization of Headphones [PDF]; David Griesinger Acoustics, Cambridge, MA, USA; Paper 9620; Available from: https://aes2.org/publications/elibrary-page/?id=18424
Griesinger, David; Accurate Timbre and Frontal Localization without Head Tracking through Individual Eardrum Equalization of Headphones [PDF]; David Griesinger Acoustics, Cambridge, MA, USA; Paper 9620; 2016 Available: https://aes2.org/publications/elibrary-page/?id=18424