NOISE FILTERING UTILIZING NON-GAUSSIAN SIGNAL STATISTICS

摘要

Audio input y(t) is converted from analog to digital (602) and is mathematically analysed (603, 604, 605, 606, 607, 608, 609) based on Gaussian Mixture Models (GMM). The parameters derived are use to filter the digital signal (610). A noise estimate is derived (613) and is statistically combined as a weighted average of prior values (614). The resulting output (611) may be provided in digital (616) or analog (612).