This paper introduces a design of multi-functional music spectrum based on single chip microcomputer, including external heating and humidity detection, infrared detection, digital clock, backlight detection and so on. The system is mainly to sample and filter the voice signal, carry out fast Fourier transform (FFT), and then display the spectrum distribution through LED screen, at the same time, change the screen display of its extended function, and support infrared remote control operation.

LixiaMou. Design of Music Spectrometer Based on Stm32l053. The Frontiers of Society, Science and Technology (2020) Vol. 2 Issue 9: 5-7. https://doi.org/10.25236/FSST.2020.020902.

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