EDN

FFT Algorithm Based Audio Spectrum Analyzer

This audio spectrum analyzer utilizes an ARM7 LPC2138 microcontroller to create an FFT algorithm while performing digital signal processing without the use of special DSP processor. This audio ...
EDN

ATmega8 Based Radio Spectrum Monitor with FFT Calculation

The purpose of the project is to analyze and monitor the radio signal spectrum wherein its FFT is calculated which is displayed in a graphical LCD. The method of analyzing the spectrum of an input ...
Electronic Design

C Program Magnifies Spectrum When An FFT Can't Hack It

Many science and engineering applications require an accurate frequency spectrum or Fourier transform of a signal. The Fourier transform of a sequence of samples of a signal is shown in Equation 1.
Electronic Design

Choose The Right FFT Window Function When Evaluating Precision ADCs

When evaluating the dynamic performance of precision analog-to-digital converters (ADCs) using fast Fourier transform (FFT) analysis, coherent sampling typically is used to accurately measure the ...