
Deriving the Ideal Low Pass Filter (LPF)
October 1, 2022

Single Pole IIR Filter: Substitute for Moving Average Filter
August 10, 2022


Easy Guide to Logarithms and Decibels
July 20, 2022

Fourier Transform of the Boxcar Window
July 13, 2022

![Figure 3: The complex sinusoid e(j2 pi (2/4) n) only contains energy at X[2].](https://www.wavewalkerdsp.com/wp-content/uploads/2022/01/DFTFrequencyResolutionExplained_4DFT_Freq2-150x150.png)
DFT Frequency Resolution Explained
March 16, 2022

Trigonometric Identity: sin(x)^2 + cos(x)^2 = 1
March 9, 2022

Designing FIR Filter Gain
February 23, 2022
![Figure 6: The magnitude of the cross correlation between c[n] and y[n], |Ryc[tau]|.](https://www.wavewalkerdsp.com/wp-content/uploads/2021/12/CrossCorrelationExplainingTimeLags_barkerCrossCorrAbsNoisy-150x150.png)
Cross Correlation: Explaining Time Lags
January 12, 2022