| 摘要 |
<p>An apparatus and method for extracting precise voiced/unvoiced classification information from a voice signal is disclosed. The apparatus extracts voiced/unvoiced classification information by analyzing a ratio of a harmonic component to a non-harmonic (or residual) component. The apparatus uses a harmonic to residual ratio (HRR), a harmonic to noise component ratio (HNR), and a sub-band harmonic to noise component ratio (SB-HNR), which are feature extracting schemes obtained based on a harmonic component analysis, thereby precisely classifying voiced/unvoiced sounds. Therefore, the apparatus and method can be used for voice coding, recognition, composition, reinforcement, etc. in all voice signal processing systems.
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