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    • 96. 发明公开
    • DYNAMIC THRESHOLD METHODS, SYSTEMS, COMPUTER READABLE MEDIA, AND PROGRAM CODE FOR FILTERING NOISE AND RESTORING ATTENUATED HIGH-FREQUENCY COMPONENTS OF ACOUSTIC SIGNALS
    • FOR动态阈值,系统,滤除噪声和恢复计算机可读介质和程序代码的方法减弱声音信号中的高频分量
    • EP3044789A1
    • 2016-07-20
    • EP14777231.3
    • 2014-09-12
    • Saudi Arabian Oil Company
    • YANG, Yunlai
    • G10L21/0208
    • G01V1/364G01N29/11G01N29/32G01V1/40G01V2210/324G01V2210/40G10L21/0208G10L21/0232G10L2021/02163
    • Methods, systems, computer readable media, and program code (51) to provide for filtering noise and/or restoring attenuated spectral components in acoustic signals (410), are provided. An exemplary embodiment of a method includes dynamically filtering each of a plurality of raw fft data samples (420) of a record to remove or attenuate background noise contained therein to thereby produce a corresponding plurality of cleaned fft data samples (430). The sample-specific background noise is removed or attenuated by a record-specific dynamic filter (640) to produce the corresponding cleaned fft data samples (430). The method can also include restoring the attenuated high-frequency components of the cleaned data samples through application of a record-specific restoring processor (930) at least partially defined by a portion of the cleaned data samples and a Gain Function to thereby produce cleaned and restored data samples, and applying an inverse transformation to convert the cleaned and restored data samples into cleaned and restored data samples in time domain data (732). An exemplary system (30), computer readable media, and program code is configured to perform the exemplary method.
    • 系统,计算机可读介质和程序代码,以提供滤波的噪声和/或声学信号恢复衰减频谱分量,提供。 一个系统的示例性实施例被配置为动态过滤其中所含从而产生清洁FFT数据样本的相应的多个记录样本的原始FFT数据以去除或衰减背景噪声的多个每。 特定样品的背景噪声被去除或通过记录专用动态滤波器衰减以产生相应的净化的FFT数据样本。 因此,该系统可以执行通过由清洗的数据样本的一个部分和增益函数至少部分地限定的记录专用恢复处理器的应用恢复清洁的数据样本的衰减高频分量的,从而产生清洁的操作和 恢复的数据样本,并应用到逆变换,以清洁和恢复的数据样本到清洁和恢复后的数据样本转换中的时域数据。