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NONLINEAR NOISE REDUCTION SYSTEM

机译:非线性降噪系统

摘要

Embodiments of the present disclosure set forth a method of decomposing an audio signal into a set of sub-band signals and detecting a set of signal energy values, where each signal energy value is associated with a sub-band signal. The method also includes generating a noise reduction threshold based on at least one sub-band signal, and, for each sub-band signal, comparing the associated signal energy value to the noise reduction threshold. Based on determining that at least one sub-band signal is associated with a signal energy value below the noise reduction threshold, the method includes attenuating the at least one the sub-band signal to generate a set of attenuated sub-band signals. The method also includes combining at least one sub-band signal included in the set of sub-band signals with at least one attenuated sub-band signal included in the set of attenuated sub-band signals to generate an output audio signal.
机译:本公开的实施例阐述了一种将音频信号分解为一组子带信号并检测一组信号能量值的方法,其中每个信号能量值与子带信号相关联。该方法还包括基于至少一个子带信号生成降噪阈值,并且对于每个子带信号,将相关联的信号能量值与降噪阈值进行比较。基于确定至少一个子带信号与低于噪声减小阈值的信号能量值相关联,该方法包括衰减至少一个子带信号以生成一组衰减的子带信号。该方法还包括将包括在该组子带信号中的至少一个子带信号与包括在该组衰减子带信号中的至少一个衰减子带信号组合以产生输出音频信号。

著录项

  • 公开/公告号EP3696815A1

    专利类型

  • 公开/公告日2020-08-19

    原文格式PDF

  • 申请/专利权人 HARMAN INTERNATIONAL INDUSTRIES INCORPORATED;

    申请/专利号EP20200156605

  • 发明设计人 LAMBRICK JAMES;

    申请日2020-02-11

  • 分类号G10L21/0232;

  • 国家 EP

  • 入库时间 2022-08-21 11:40:24

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