Real author:
klot
The indicator exemplifies smoothing of price time series of the RSI indicator by means of filtration of harmonics of a greater order.
This approach can be applied for smoothening any indicators’ values. The main advantage of the method is a real absence of a delay.
Indicator input parameters:
input uint                RSIPeriod=14; input ENUM_APPLIED_PRICE  RSIPrice=PRICE_CLOSE; input uint N = 7;  // Series length input uint SS = 20; // Smoothing coefficient input int Shift=0;  // Horizontal shift of the indicator in bars
where:
- N specifies series length (power of two);
- SS – A smoothening coefficient in the resulting spectrum zeroes out frequency ratios exceeding set value. SS cannot exceed 2^N. RSI series fully repeats itself if SS = 2^N.
dt_FFT library is required for the indicator operation.
Fig.1. i-SpectrAnalysis_RSI Indicator