Body-conducted speech retrieval from a noisy environment using differential acceleration Online publication date: Mon, 07-Jun-2010
by Shunsuke Ishimitsu, Masashi Nakayama, Seiji Nakagawa
International Journal of Advanced Mechatronic Systems (IJAMECHS), Vol. 2, No. 4, 2010
Abstract: Speech recognition tends to be influenced by noise in the air. Body-conducted speech offers a robust signal extraction method from noisy environments, particularly because body-conducted speech is a propagated sound and not easily influenced by noise. However, when body-conducted speech is extracted with an accelerator, the typical frequency component of 2 kHz or more decreases compared with normal speech. Thus, we investigated a technique combining differential acceleration and noise reduction to estimate a clear signal using only body-conducted speech from a noisy room. The recognition rate confirmed about 3-4% is improved with proposed method.
Online publication date: Mon, 07-Jun-2010
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