Adjacent point correlativity mean noise reduction method implemented for FFT data
A technology of adjacent points and data values, applied in electrical digital data processing, special data processing applications, complex mathematical operations, etc. The programming logic sequence is difficult to solve and other problems, to achieve the effect of saving manpower, flexible and convenient application, and improving the effect of signal analysis
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[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0034] An adjacent point correlation mean value noise reduction method for FFT data, which is aimed at the filtering and noise floor purification processing operations in the case of unsatisfactory mixed small signals after FFT processing of sampled data, to improve the FFT processing effect and optimize Data processing results.
[0035] The method of the present invention is to calculate the average value of the backward adjacent 3 data (including the first data lower than the reference value dRef) that are lower than the reference value dRef in the FFT signal data to be processed, so as to replace the data value. deal with.
[0036] This method can reduce the amplitude of the distorted data below the reference value by means of the average of adjacent data, and at the same time reduce the noise band, so that the signal below the reference value conve...
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