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Speech Enhancement for Hands-free Terminals

På svenska

Author

  • Nedelko Grbic
  • Sven Nordholm
  • Johansson Anders

Summary, in English

This paper discusses signal processing methods for speech extraction in use with voice communication applications such as personal digital assistants (PDA), mobile telephone terminals and personal computers. The user is distant from the device and thus the speech signal entering the device may be subject to reverberation and may be disturbed by background noise. The proposed structure consists of a microphone array which allows for techniques of directional processing. Thus it is able to enhance a desired speech source and suppress other speech sources in the background. Three different optimal beamforming methods are considered in a real world car hands-free environment: an optimal near-field array gain optimization procedure, a theoretical diffuse noise field model for a point source and a least squares solution

Publishing year

2001

Language

English

Pages

435-440

Publication/Series

Proceedings of the 2nd International Symposium on Image and Signal Processing and Analysis, ISPA 2001.

Document type

Conference paper

Publisher

IEEE - Institute of Electrical and Electronics Engineers Inc.

Topic

  • Signal Processing

Conference name

2nd International Symposium on Image and Signal Processing and Analysis (ISPA 2001)

Conference date

2001-06-19 - 2001-06-21

Conference place

Pula, Croatia

Status

Published

ISBN/ISSN/Other

  • ISBN: 953-96769-4-0