Control of feedback for assistive listening devices
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Authors
Nakagawa, Carlos Renato Calcada
Date
2014Supervisor
Dr Wei-Yong Yan
Dr Yee-Hong Leung
Assoc. Prof. Dr Yue Rong
Prof. Sven Nordholm
Type
Thesis
Access Status
Open access
Education Level
Ph.D.
Metadata
Show full item recordAbstract
Acoustic feedback refers to the undesired acoustic coupling between the loudspeaker and microphone in hearing aids. This feedback channel poses limitations to the normal operation of hearing aids under varying acoustic scenarios. This work makes contributions to improve the performance of adaptive feedback cancellation techniques and speech quality in hearing aids. For this purpose a two microphone approach is proposed and analysed; and probe signal injection methods are also investigated and improved upon.
Department
School of Electrical and Computer Engineering
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