Introduction

How to characterize and graphically represent sounds?

Analysis

• Fundamental estimation
• Additive analysis for separating the harmonic part from the noisy part
• Detection of virtual pitches
• Ratio between the RMS of additive synthesis and the RMS of the residue
• Spectral envelope
• Spectral envelope of the noisy component
• Roughness
• Spectral centroid
• Dispersion of the FFT spectrum

Some different guitar sounds (as played sometimes in rock'n roll music):