Scilab’s FFT functionality can help you understand the frequency-domain effects of RF modulation techniques.
September 06, 2018 by Robert Keim
In this article we’ll work with sinusoidal signals in the frequency domain using Scilab’s fast Fourier transform (FFT) functionality.
September 04, 2018 by Robert Keim
This article discusses digital down-conversion which is a digital-signal-processing technique widely used in digital radio receivers.
June 04, 2018 by Dr. Steve Arar
This article, part of AAC’s Analog Circuit Collection, presents a circuit that is a good choice when you need to remove high-frequency noise from a digital signal.
March 07, 2018 by Robert Keim
In this article, we’ll evaluate different firmware strategies in our pursuit of maximum-frequency analog signal generation.
December 08, 2017 by Robert Keim
Fixed-point representation allows us to use fractional numbers on low-cost integer hardware.
November 30, 2017 by Dr. Steve Arar
The overlap-add method allows us to use the DFT-based method when calculating the convolution of very long sequences.
October 25, 2017 by Dr. Steve Arar
The DFT provides an efficient way to calculate the time-domain convolution of two signals.
October 19, 2017 by Dr. Steve Arar
This article will verify that a suitable structure can reduce the sensitivity of a digital filter response to the coefficient quantization.
October 12, 2017 by Dr. Steve Arar
This article will review the basics of the frequency sampling method for designing FIR filters.
September 29, 2017 by Dr. Steve Arar
This article provides detailed information on sampling audio signals and transferring the data to a PC for analysis.
September 15, 2017 by Robert Keim
This article will review the basics of the decimation-in-time FFT algorithms.
August 28, 2017 by Dr. Steve Arar
This article will review the use of window functions to alleviate the DFT leakage.
August 23, 2017 by Dr. Steve Arar
This article attempts to give a deeper insight into the interpretation of DFT (direct Fourier transform) output.
August 17, 2017 by Dr. Steve Arar
The DFT is one of the most powerful tools in digital signal processing which enables us to find the spectrum of a finite-duration signal.
July 20, 2017 by Dr. Steve Arar
This article reviews the basics of D/A conversion and explains how multirate DSP can lead to a more efficient system.
June 30, 2017 by Dr. Steve Arar
Good analog-to-digital conversion starts with good pre-ADC signal conditioning. Specialized devices such as the LTC6432-15 can help in this effort.
May 17, 2017 by Robert Keim
This article provides insight into the importance of complex conjugates in electrical engineering.
November 17, 2016 by Sneha H.L.
In this article, we will discuss several design examples of FIR filters using the window method. The simulated frequency response of the designed filters will be compared with the target specifications.
July 26, 2016 by Dr. Steve Arar
Learn how to use filter specs to help choose the best window parameters for your FIR filter design.
June 28, 2016 by Dr. Steve Arar
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