Reliable pitch estimation is one of the most significant problems in speech processing applications since any error in pitch detection has a deleterious effect on system performance. Many applications also need robust pitch estimation from noise-conupted speech. Since noise obscures the periodic structure of speech, the pitch estimation in noise is an intricate task. Even though a large number of pitch estimation algorithms have been disclosed in literature for clean speech, it is rather surprising that only a few algorithms have been proposed for the pitch estimation in the presence of noise [l]-[2].
展开▼
