Design and Application of Speech Recognition System Based on STM32
Sound recognition technology can be used for detecting various environmental parameters.This article uses STM32 DSP technology to perform Fast Fourier Transform(FFT)on the environmental sound col-lected by the omnidirectional pickup,obtain the main and secondary frequencies of the sound to be tested,and display the strength and main frequency components of the collected signal through an LCD screen.This device can effectively detect the main participants in environmental sound,and has high applicability in noise detection and general equipment operation fault detection.
STM32F103 main controlFast Fourier Transform(FFT)Digital Signal Processing(DSP)