TY - GEN
T1 - Influence of the auditory canal number of segments and radius variation on the outer ear frequency response
AU - Thejane, Tshegofatso
AU - Nelwamondo, Fulufhelo V.
AU - Smit, Jacoba E.
AU - Marwala, Tshilidzi
PY - 2012
Y1 - 2012
N2 - A lumped transmission line model of the auditory canal is modified to study the influence of the number of segments used and the variation of the radius on the outer ear frequency response. A new second order polynomial is used to map the radius to the length along the narrow part of the auditory canal. The results found are compared to other literature results and expected theoretical results. The study shows that both an increase and decrease in the number of segments of the ear canal results in a distortion in the frequency response. The results obtained when using the radius-length mapping function show that the response found closely correlates with other literature results. The optimum representation of the frequency response was found when four number of segments and the radius-length mapping function were used. The use of a third order polynomial to further improve the relationship between the radius and the length of the ear canal is suggested for future research work.
AB - A lumped transmission line model of the auditory canal is modified to study the influence of the number of segments used and the variation of the radius on the outer ear frequency response. A new second order polynomial is used to map the radius to the length along the narrow part of the auditory canal. The results found are compared to other literature results and expected theoretical results. The study shows that both an increase and decrease in the number of segments of the ear canal results in a distortion in the frequency response. The results obtained when using the radius-length mapping function show that the response found closely correlates with other literature results. The optimum representation of the frequency response was found when four number of segments and the radius-length mapping function were used. The use of a third order polynomial to further improve the relationship between the radius and the length of the ear canal is suggested for future research work.
UR - http://www.scopus.com/inward/record.url?scp=84864191229&partnerID=8YFLogxK
U2 - 10.1109/BHI.2012.6211595
DO - 10.1109/BHI.2012.6211595
M3 - Conference contribution
AN - SCOPUS:84864191229
SN - 9781457721779
T3 - Proceedings - IEEE-EMBS International Conference on Biomedical and Health Informatics: Global Grand Challenge of Health Informatics, BHI 2012
SP - 384
EP - 387
BT - Proceedings - IEEE-EMBS International Conference on Biomedical and Health Informatics
T2 - IEEE-EMBS International Conference on Biomedical and Health Informatics, BHI 2012. In Conj. with the 8th Int. Symp.on Medical Devices and Biosensors and the 7th Int. Symp. on Biomedical and Health Engineering
Y2 - 2 January 2012 through 7 January 2012
ER -