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

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2012

Autores

Bispo, BC (Autor) Outra; Freitas, DD (Autor) Outra

Ata de Conferência Internacional

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

Páginas: 1920-1923

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

Portland, OR, SEP 09-13, 2012

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 0 Citações

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 4