Determining the Euclidean Distance Between Two Steady State Sounds

We describe a perceptual space for timbre, define an objective metric that takes into account perceptual orthogonality and measure the quality of timbre interpolation. We discuss two timbre representations and using these two representations, measure perceived relationships between pairs of sounds on a equivalent range of timbre variety. We determine that a timbre space based on Mel-frequency cepstral coefficients (MFCC) is a good model for a perceptual timbre space.