External Audio Spectrum Monitor ----- Audio Spectrum Monitor

High-grade audio equipment generally has an audio frequency spectrum display device that can always understand the instantaneous spectrum of the playback signal and have a vision of elegance. This external audio spectrum display is not necessary to make any electrical connection with your audio device. Just place it in front of the speaker, it is visually dynamically displayed the spectrum of the audio signal being played, so that your sound system is I have a good look, and there is a lot of color. As shown in the figure, an external audio spectral display circuit diagram. The display is fully designed with an integrated op amp and dedicated integrated circuit, the circuit is simple, stable, easy to make, easy to use, can be at the same time at 100 Hz, 300 Hz, 1kz, 3kHz, 10kHz5 frequency point (including a certain bandwidth), The five-stage dynamic light column show the instantaneous level of each frequency point. The function of the external audio spectrum display is to convert the sound played by the speaker to the dynamic display of the light-emitting diode light column.

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