Developments of a Hybrid Pre-Processor Based on Frequency Shifting for Stereophonic Acoustic Echo Cancellation

• Type: Article in International Conference Proceedings Book
• Date: 2012

Authors

Bispo, BC (Author) Other; Freitas, DD (Author) Other

Conference proceedings International

Title: 13TH ANNUAL CONFERENCE OF THE INTERNATIONAL SPEECH COMMUNICATION ASSOCIATION 2012 (INTERSPEECH 2012), VOLS 1-3

Pages: 1920-1923

13th Annual Conference of the International-Speech-Communication-Association

Portland, OR, SEP 09-13, 2012

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Other information

Authenticus ID: P-005-K8K

Abstract (EN): In a multi-channel hands-free communication, decorrelation algorithms are necessary, along with adaptive filters, to efficiently remove the acoustic echo in real time applications. But the quality of the signals and the spatial position of the sound source must not be perceptually affected by those algorithms. This paper proposes a new hybrid solution that uses frequency shifts to improve the performance of a state-of-art solution based on addition of half-wave rectified signals. The results show that the new method achieves a significant improvement in the identification process of the real echo paths as well as in the global perceptual quality of the processed signals.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4