This paper proposes a method of speech extraction of a target speaker from one mixed speech signal of some speakers. The proposed method uses a dictionary consisted of feature vectors of a speech signal. The feature vectors are spectra of a segment of the speech signal which contains all phonemes. The dictionary is made in advance from a clear speech signal of the target speaker, and is employed in extracting the target speech signal from one mixed speech signal. The effectiveness of the proposed method has been verified by computer simulations.
