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Speech probability presence modifier improving log-mmse based noise suppression performance

机译:语音概率存在修饰符可改善基于对数毫米的噪声抑制性能

摘要

Acoustic noise in an audio signal is reduced by calculating a speech probability presence (SPP) factor using minimum mean square error (MMSE). The SPP factor, which has a value typically ranging between zero and one, is modified or warped responsive to a value obtained from the evaluation of a sigmoid function, the shape of which is determined by a signal-to-noise ratio (SNR), which is obtained by an evaluation of the signal energy and noise energy output from a microphone over time.
机译:通过使用最小均方误差(MMSE)计算语音概率存在(SPP)因子,可以减少音频信号中的声学噪声。 SPP因子的值通常在0到1之间,它会根据从S型函数评估中获得的值进行修改或扭曲,该函数的形状由信噪比(SNR)确定,通过评估随时间变化从麦克风输出的信号能量和噪声能量而获得。

著录项

  • 公开/公告号US2017069337A1

    专利类型

  • 公开/公告日2017-03-09

    原文格式PDF

  • 申请/专利权人 CONTINENTAL AUTOMOTIVE SYSTEMS INC.;

    申请/专利号US201615269608

  • 发明设计人 GUILLAUME LAMY;JIANMING SONG;

    申请日2016-09-19

  • 分类号G10L21/0232;G10L25/84;

  • 国家 US

  • 入库时间 2022-08-21 13:46:29

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