A Single-channel Loudness Compensation Method for Digital Hearing Aids Based on Multi-resolution Wavelet

Author

Lin Zhimin ; Zhang Linghua ; Yang Zi

Author_Institution

Coll. of Telecommun. & Inf. Eng., Nanjing Univ. of Post & Telecommun., Nanjing, China

fYear

2012

fDate

8-10 Dec. 2012

Firstpage

1616

Lastpage

1620

Abstract

The conventional multi-channel loudness compensation algorithm used in digital hearing aid ignores the protection of speech feature, which results in the deformation of speech structure and low recognition rate. In this paper, a single-channel method based on multi-resolution wavelet is proposed. Multi-resolution wavelet is involved in decomposing and reconstructing the signal, so that the envelope of signal spectrum can be extracted. Then, calculate the required gain of each feature point. After that, the gain of entire signal spectrum is obtained by interpolation algorithm. Experiments show that the proposed algorithm can not only compensate the loudness of speech, but also effectively protect the speech feature, which improves the speech recognition rate.

Keywords

hearing aids; interpolation; signal reconstruction; speech recognition; wavelet transforms; digital hearing aids; interpolation algorithm; multiresolution wavelet; signal spectrum; single channel loudness compensation method; speech feature; speech loudness; speech recognition; Algorithm design and analysis; Auditory system; Feature extraction; Speech; Speech recognition; Wavelet transforms; Interpolation Algorithm; Loudness Compensation; Multiresolution Analysis; Spectral Envelope; Speech Feature;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation, Measurement, Computer, Communication and Control (IMCCC), 2012 Second International Conference on

Conference_Location

Harbin

Print_ISBN

978-1-4673-5034-1

Type

conf

DOI

10.1109/IMCCC.2012.376

Filename

6429212