Soundwalk paper This project researches the difference of popular music in different years. Example input and output Input Example Audio Sound.Walking.Through.Years.mp4 Analysis I. Level $rms_{dB} = 20 \times log_{10}rms$. II. Stereo Image III. Noise Level IV. Frequency Distribution Spectral Centroid Harmonic Ratio Spectral Spread Amplitude in different Frequency Bands