Real-time output optical wavelength and intensity control system of audio signal

The invention relates to a real-time output optical wavelength and intensity control system of an audio signal. A sensor converts the audio signal into an electrical signal, the signal is transmitted to a subsequent adder or half-wave shaping circuit via a USB interface, the circuit shapes the electrical signal and then inputs the signal to an analog signal input port of an ADC or a single-chip microcomputer with an AD, a digital signal output port outputs a needed digital signal to a digital signal input port of a DAC via calculation, the DAC converts the digital signal to the electrical signal and outputs the electrical signal via an analog signal output port. The voltage acts on a laser or LED lamp, tubes are lightened, light of the three tubes passes a focusing collimating system, and finally required light spots are output. The real-time input audio signal is transmitted to the single-chip microcomputer via the voltage signal, proportion of the three primary colors is calculated, and color of the finally output light changes with the input audio signal. Thus, the frequency and loudness of the real-time input audio signal correspond to the wavelength and intensity of the output light signal respectively.