Title
An Attempt to Calibrate Headphones for Reproduction of Sound Pressure at the Eardrum
Abstract
This paper provides an analysis of headphone calibration for reproduction of sound pressure at the eardrums of the listener. If the vibrations of the listener's eardrums are reproduced, the listener would perceive an auditory sensation as if he/she were in the original sound scene. The visual and other sensations also affect sound impressions, but they are not always available, e.g., when the sound sources are out of sight. Moreover, reproduction of stimuli as faithfully as possible on each modality is a reasonable approach to produce a solid impression of the sense of presence. For reproduction of vibrations at the eardrums, calibration functions for individual characteristics of ear-canal transfer functions and eardrum impedance are required because they are generally different from person to person. Sound pressure at the entrance to the ear canal observed with and without headphones, with the ear canal blocked and open, and at the eardrum was investigated through equivalent circuits based on electrical circuit theory, and a new headphone calibration function was derived. The effects of calibration functions were then quantitatively evaluated in experiments using a head and torso simulator (HATS), revealing that sound pressure can be reproduced at the eardrums in a wide frequency range such as 100 Hz to 10 kHz. Relations of the relevant impedance were also investigated.
Year
DOI
Venue
2011
10.1109/TASL.2011.2118203
Audio, Speech, and Language Processing, IEEE Transactions
Keywords
Field
DocType
acoustic radiators,audio-visual systems,calibration,ear,equivalent circuits,headphones,sound reproduction,transfer functions,vibrations,auditory sensation,ear-canal transfer functions,eardrum impedance,equivalent circuits,head and torso simulator,headphones calibration,sound pressure reproduction,sound sources,vibrations reproduction,Equivalent circuit,head-related transfer function (HRTF),headphone calibration,spatial audio
Headphones,Torso,Sound pressure,Computer science,Speech recognition,Acoustics,Vibration,Eardrum,Sound recording and reproduction,Ear canal,Equivalent circuit
Journal
Volume
Issue
ISSN
19
7
1558-7916
Citations 
PageRank 
References 
1
0.63
0
Authors
4
Name
Order
Citations
PageRank
R. Nishimura112318.60
Parham Mokhtari22510.14
Takemoto, H.310.63
Hiroaki Kato43718.25