Home / Publications / E-library page
Only AES members and Institutional Journal Subscribers can download
Headphones are commonly used in noisy environments. Insert headphones attenuate and color the spectra of ambient sounds and thus alter the auditory perception. When the ambient sounds are desirable, a hear-through function can be used to reproduce them naturally while wearing headphones, i.e. to make the headphones acoustically transparent. A novel adaptive hear-through algorithm is proposed, which estimates the isolation and fine-tunes the hear-though equalization for optimal acoustic transparency. Measurements on a prototype headset and simulations show that the proposed algorithm produces acoustic transparency with default settings when the fit is good, and that the adaptation improves the transparency by up to 6 dB when the headset is poorly fitted. Volume control with additional shelving filter adjustments reduces the comb-filtering effect at frequencies below 1 kHz. The proposed algorithm is a suitable premise for augmented reality audio applications and offers improved behavior when compared to fixed hear-through systems.
Author (s): Liski, Juho; Väänänen, Riitta; Vesa, Sampo; Välimäki, Vesa
Affiliation:
Aalto University, Espoo, Finland; Nokia Technologies, Espoo, Finland
(See document for exact affiliation information.)
Publication Date:
2016-08-06
Import into BibTeX
Session subject:
Digital Signal Processing / Augmented Reality
Permalink: https://aes2.org/publications/elibrary-page/?id=18343
(1048KB)
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member Join the AES. If you need to check your member status, login to the Member Portal.
Liski, Juho; Väänänen, Riitta; Vesa, Sampo; Välimäki, Vesa; 2016; Adaptive Equalization of Acoustic Transparency in an Augmented-Reality Headset [PDF]; Aalto University, Espoo, Finland; Nokia Technologies, Espoo, Finland; Paper 6-4; Available from: https://aes2.org/publications/elibrary-page/?id=18343
Liski, Juho; Väänänen, Riitta; Vesa, Sampo; Välimäki, Vesa; Adaptive Equalization of Acoustic Transparency in an Augmented-Reality Headset [PDF]; Aalto University, Espoo, Finland; Nokia Technologies, Espoo, Finland; Paper 6-4; 2016 Available: https://aes2.org/publications/elibrary-page/?id=18343