Abstract
In this paper, we present a novel technique for the estimation of the high frequency components (4-8kHz) of speech signals from narrow-band (0-4 kHz) signals using convolutive Non-Negative Matrix Factorisation (NMF). The proposed technique utilizes a brief recording of simultaneous broad band and narrow band signals from a target speaker to learn a set of broad-band non-negative "bases" for the speaker. The low-frequency components of these bases are used to determine how the high-frequency components must be combined in order to reconstruct the high-frequency components of new narrow-band signals from the speaker. Experiments reveal that the technique is able to reconstruct broadband speech that is perceptually virtually indistinguishable from true broadband recordings.
Original language | English (US) |
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Pages | 1505-1508 |
Number of pages | 4 |
State | Published - 2005 |
Externally published | Yes |
Event | 9th European Conference on Speech Communication and Technology - Lisbon, Portugal Duration: Sep 4 2005 → Sep 8 2005 |
Other
Other | 9th European Conference on Speech Communication and Technology |
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Country/Territory | Portugal |
City | Lisbon |
Period | 9/4/05 → 9/8/05 |
ASJC Scopus subject areas
- General Engineering