DSB-SC Signal Generation and Demodulation Implementation with DSP Methods

I've recently developed a DSB-SC signal generation and demodulation program using discrete signal processing (DSP) techniques. The implementation generates DSB signals with a 150kHz carrier frequency, using a mixed audio signal of 500Hz and 2000Hz. The program adds noise with SNR=1dB and employs quadrature demodulation for signal recovery. I've included spectral diagrams showing both pre-demodulation and post-demodulation states, demonstrating successful reconstruction of the original signal. This project serves as an educational resource for communication systems learning.