![Figure 1: The weights of the partitioned half band filter hA[n] and hB[n].](https://www.wavewalkerdsp.com/wp-content/uploads/wordpress-popular-posts/2226-featured-125x75.png)
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March 1, 2025
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Introduction to Interpolation and Upsampling - Polyphase Half Band Filter for Decimation by 2
- Deriving the Ideal Low Pass Filter (LPF)
- Complex Frequency Shifting in Discrete Time
- FIR Low Pass Filter Design with Remez
- Calculate Average Signal Power
- Designing FIR Filter Gain
- What is Power Spectral Density (PSD)?
- How To Install GNU Radio Source Code
- Bandwidth of a Moving Average Filter
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![A BPSK signal s[n], real Gaussian noise w[n], and the received signal x[n] = s[n] + w[n] for SNR = 20 dB](https://www.wavewalkerdsp.com/wp-content/uploads/2023/12/HowToComputeSignalToNoiseRatioSNRInSimulation_signalNoiseTimeDomain-300x240.png)
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The third edition of DSP for Beginners: Simple Explanations for Complex Numbers! Includes a new chapter on sampling.
