- Tytuł:
- Relaxing the WDO Assumption in Blind Extraction of Speakers from Speech Mixtures
- Autorzy:
-
Kasprzak, W.
Ding, N.
Hamada, N. - Powiązania:
- https://bibliotekanauki.pl/articles/308531.pdf
- Data publikacji:
- 2010
- Wydawca:
- Instytut Łączności - Państwowy Instytut Badawczy
- Tematy:
-
blind source extraction
harmonic frequencies
histogram clustering
time-frequency masking
W-disjoint orthogonal - Opis:
- The time-frequency masking approach in blind speech extraction consists of two main steps: feature clustering in a space spanned over delay-time and attenuation rate, and spectrogram masking in order to reconstruct the sources. Usually a binary mask is generated under the strong W-disjoint orthogonal (WDO) assumption (disjoint orthogonal representations in the frequency domain). In practice, this assumption is most often violated leading to weak quality of reconstructed sources. In this paper we propose the WDO to be relaxed by allowing some frequency bins to be shared by both sources. As we detect instantaneous fundamental frequencies the mask creation is supported by exploring a harmonic structure of speech. The proposed method is proved to be effective and reliable in experiments with both simulated and real acquired mixtures.
- Źródło:
-
Journal of Telecommunications and Information Technology; 2010, 4; 50-58
1509-4553
1899-8852 - Pojawia się w:
- Journal of Telecommunications and Information Technology
- Dostawca treści:
- Biblioteka Nauki
Artykuł