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Applicant:
Indian Institute of Technology (IIT) Gandhinagar 
Title:
SUBBAND FEEDBACK CANCELLATION IN ASSISTIVE LISTENING DEVICES 
Inventor(s):
Prof Nithin George, Mr Somanath Pradhan, Mr Vinal Patel  
Applicant:
Indian Institute of Technology (IIT) Gandhinagar 
Application type:
Applied - 2017-05-15 
Application Number:
201721017009 
Applied at:
India 
Entered by:
Indian Institute of Technology (IIT) Gandhinagar 
Abstract:
The present disclosure envisages an acoustic feedback cancellation system for assistive listening device. The system comprising a summation unit (12) to generate error signal e(n), a first adaptive prediction filter (14) to generate a filtered error signal (n)ẽ , a second adaptive prediction filter (22) to generate a filtered input signal, a feedback cancellation unit (15) to update a pre-defined rules, a shadow filter (32) to estimate the feedback path, a feedback path estimation filter (34) to generate the estimated feedback signal. 

 
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