This article describes how to build simple audio spectrum analyzer based on FFT algorithm using Philips LPC2138 microcontroller.

分析了输入信号的频谱，运用的FFT处理数据，外国人设计的 效果不错-This is an experimental work to monitor a spectrum pattern in radio band, and is a continuous project from Audio Spectrum Monitor. To analyze the spectrum of an input signal, I chose an Atmel AVR microcontroller that

Project Audio Spectrum by AVR atmega128 - FFT - GLCD 128x64