公开(公告)号：US09866955B2

公开(公告)日：2018-01-09

申请号：US14466565

申请日：2014-08-22

Applicant: GOOGLE INC.

Inventor： Willem Bastiaan Kleijn ,  Petko N. Petkov

IPC: H04B15/00 ,  H04R3/00 ,  G10L21/0208 ,  G10L21/0364 ,  G10L15/14 ,  G10L15/20 ,  G10L15/22

CPC classification number: H04R3/002 ,  G10L15/142 ,  G10L15/20 ,  G10L21/0208 ,  G10L21/0364 ,  G10L2015/227

Abstract: Provided are methods and systems for enhancing the intelligibility of an audio (e.g., speech) signal rendered in a noisy environment, subject to a constraint on the power of the rendered signal. A quantitative measure of intelligibility is the mean probability of decoding of the message correctly. The methods and systems simplify the procedure by approximating the maximization of the decoding probability with the maximization of the similarity of the spectral dynamics of the noisy speech to the spectral dynamics of the corresponding noise-free speech. The intelligibility enhancement procedures provided are based on this principle, and all have low computational cost and require little delay, thus facilitating real-time implementation.