Part-I - Controller General of Patents Designs and Trademarks

(12) PATENT APPLICATION PUBLICATION (21) Application No.3093/MUM/2010 A
(19) INDIA
(22) Date of filing of Application :10/11/2010 (43) Publication Date : 21/06/2013
(54) Title of the invention : A HEARING AID DEVICE WITH FEEDBACK SUPPRESSION AND A METHOD THEREOF
(51) International classification :H04R25/00
(31) Priority Document No :NA
(32) Priority Date :NA
(33) Name of priority country :NA
(86) International Application No
:NA
Filing Date
:NA
(87) International Publication No : NA
(61) Patent of Addition to Application Number :NA
Filing Date
:NA
(62) Divisional to Application Number
:NA
Filing Date
:NA
(71)Name of Applicant :
1)QUADIO DEVICES PVT. LTD.
Address of Applicant :203 Bakrol Road Vallabh
Vidyanagar Gujarat 388120 India
2)ACOUSTIC ACUITY INC.
(72)Name of Inventor :
1)SRIKANTH KONJETI
2)ABEEZAR VASI
3)ANURAG SHARMA
4)NEERAJ MAGOTRA
(57) Abstract :
This present disclosure relates to providing an improved hearing aid solution. In an embodiment, the disclosure relates to
identifying bands of the signal where feedback occurs. The disclosure then provides for a method of sub-band feedback
cancellation technique to remove the feedback from the identified bands. In an embodiment, an adaptive notch filter is used to
isolate human speech from the feedback and improving the sound quality.
No. of Pages : 16 No. of Claims : 7
The Patent Office Journal 21/06/2013 13563