Latest Spectral Analysis Articles and Videos

This article discusses digital down-conversion which is a digital-signal-processing technique widely used in digital…

This article discusses digital down-conversion which is a digital-signal-processing technique widely used in digital radio receivers.

This article, part of AAC’s Analog Circuit Collection, presents a circuit that is a good choice when you need to remove…

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.

In part 2 of this series, I'll continue the fundamental ADC noise discussion by covering how to measure ADC noise, noise…

In part 2 of this series, I'll continue the fundamental ADC noise discussion by covering how to measure ADC noise, noise specifications in ADC data sheets, and absolute versus relative noise parameters.

In part 2 of this article, we will focus on key specifications and features in the context of wearable devices, condition…

In part 2 of this article, we will focus on key specifications and features in the context of wearable devices, condition monitoring, and IoT applications.

In this article, we’ll evaluate different firmware strategies in our pursuit of maximum-frequency analog signal generation.

In this article, we’ll evaluate different firmware strategies in our pursuit of maximum-frequency analog signal generation.

Fixed-point representation allows us to use fractional numbers on low-cost integer hardware.

Fixed-point representation allows us to use fractional numbers on low-cost integer hardware.

The overlap-add method allows us to use the DFT-based method when calculating the convolution of very long sequences.

The overlap-add method allows us to use the DFT-based method when calculating the convolution of very long sequences.

This article looks at new technologies regarding the existing cable network, in particular, power amplifier digital predistortion.

This article looks at new technologies regarding the existing cable network, in particular, power amplifier digital predistortion.

The DFT provides an efficient way to calculate the time-domain convolution of two signals.

The DFT provides an efficient way to calculate the time-domain convolution of two signals.

This article will verify that a suitable structure can reduce the sensitivity of a digital filter response to the…

This article will verify that a suitable structure can reduce the sensitivity of a digital filter response to the coefficient quantization.

This article will review the basics of the frequency sampling method for designing FIR filters.

This article will review the basics of the frequency sampling method for designing FIR filters.

In this multipart industrial IoT series, we will break down and explore the fundamental aspects of the edge node…

In this multipart industrial IoT series, we will break down and explore the fundamental aspects of the edge node interpretation within the larger IoT framework: sensing, measuring, interpreting, and connecting data, with additional consideration for power management and security.

This article provides detailed information on sampling audio signals and transferring the data to a PC for analysis.

This article provides detailed information on sampling audio signals and transferring the data to a PC for analysis.

This article will review the basics of the decimation-in-time FFT algorithms.

This article will review the basics of the decimation-in-time FFT algorithms.

This article will review the use of window functions to alleviate the DFT leakage.

This article will review the use of window functions to alleviate the DFT leakage.

This article attempts to give a deeper insight into the interpretation of DFT (direct Fourier transform) output.

This article attempts to give a deeper insight into the interpretation of DFT (direct Fourier transform) output.

The DFT is one of the most powerful tools in digital signal processing which enables us to find the spectrum of a…

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.

This article reviews the basics of D/A conversion and explains how multirate DSP can lead to a more efficient system.

This article reviews the basics of D/A conversion and explains how multirate DSP can lead to a more efficient system.

This article defines 1/f noise and goes over ways to reduce or eliminate it in precision measurement applications.

This article defines 1/f noise and goes over ways to reduce or eliminate it in precision measurement applications.