公开(公告)号：US20150055800A1

公开(公告)日：2015-02-26

申请号：US14466565

申请日：2014-08-22

Applicant: GOOGLE INC.

Inventor： Willem Bastiaan KLEIJN ,  Petko N. PETKOV

IPC: H04R3/00 ,  G10L21/0208

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.

Abstract translation: 提供了用于增强在嘈杂环境中呈现的音频（例如，语音）信号的可懂度的方法和系统，受到对所渲染信号的功率的约束。 可信度的定量测量是正确解码消息的平均概率。 方法和系统通过近似解码概率的最大化来简化该过程，其中噪声语音的频谱动力学的相似性与相应无噪声语音的频谱动力学的最大化相关。 所提供的可懂度增强程序是基于这一原则，并且都具有较低的计算成本，并且需要很少的延迟，从而便于实时实现。