ANC Around a human's head

ANC Around a human's head

For access to this article, please select a purchase option:

Buy chapter PDF
(plus tax if applicable)
Buy Knowledge Pack
10 chapters for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Your details
Why are you recommending this title?
Select reason:
Active Sound and Vibration Control: theory and applications — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

This chapter introduces a new active noise control system for optimal control of the sound field around a human's head. Geometrical arrangements of error microphones are proposed around the head in a diffused noise field. In order to evaluate the controlled sound field, a rigid sphere theoretical model is used as a human's head in the computer simulations. In previous studies it was shown that the theoretical sphere model maintains a good approximation of a head-related transfer function (HRTF) below about 5 kHz. In this chapter the relationship between the noise reduction and the corresponding configuration of the error microphone and secondary source arrangement is evaluated. As a result, we found that the closely located secondary sources to the sphere head give significant noise reduction in a large control area. A possible arrangement of the error microphones is found to provide an optimal result according to a given control strategy, such as flatness of reduced sound pressure of the quiet zone.

Inspec keywords: active noise control; optimal control

Other keywords: sphere model; controlled sound field; optimal control; rigid sphere theoretical model; head-related transfer function; diffused noise field; computer simulation; sphere head; secondary source arrangement; active noise control system; human head; error microphones; noise reduction; adaptive prediction method

Subjects: Other nonelectric variables control

Preview this chapter:
Zoom in

ANC Around a human's head, Page 1 of 2

| /docserver/preview/fulltext/books/ce/pbce062e/PBCE062E_ch10-1.gif /docserver/preview/fulltext/books/ce/pbce062e/PBCE062E_ch10-2.gif

Related content

This is a required field
Please enter a valid email address