Fourth European Conference on Speech Communication and Technology

Madrid, Spain
September 18-21, 1995

The Application of Volterra LMS Adaptive Filtering to Speech Enhancement for the Hearing Impaired

V. Udayashankara, A. P. Shivaprasad

Department of Electrical Communication Engineering, Indian Institute of Science, Bangalore, India

It is well known that the communication in a noisy environment is a difficult problem to solve for both normal and hearing impaired listeners. In this work, the signals obtained from the omnidirectional microphone which is mounted just above one ear on the head of the KEMAR mannikan and a hypercardioid microphone which is placed at the center of the vertebral column on the back were used as input to the two channel adaptive noise canceller. The intelligibility tests conducted by the authors are presented in this paper to illustrate the performance of both Linear and Non Linear model. Results show that the Volterra LMS scheme is very effective in improving intelligibility and SNR for different environmental noise.

Full Paper

Bibliographic reference.  Udayashankara, V. / Shivaprasad, A. P. (1995): "The application of volterra LMS adaptive filtering to speech enhancement for the hearing impaired", In EUROSPEECH-1995, 1871-1874.