This page contains some examples of morphed sounds to complement the article and exemplify how we can obtain more perceptually linear morphed sounds. Here we compare the results obtained with the Morphing by Feature Interpolation priciple developed in the article against the classical approach that applies the interpolation principle to sinusoidal models.
Therefore, I will present two transformations that are challenging each in their own aspect.
The results are presented as a cyclostationary morph, that is, first you will hear the source sound, then several hybrid sounds that progressively approach the target, and then the target sound is finally played. I chose the static transformation to emphasize the temporal aspects of the morphing techniques described in the article, specially the attack time and temporal envelope morphing. Click on the title to read the article.

Original Sounds


Flute Tuba
Bass
Clarinet		 Clavinet


Results

Here we present some examples of morphed sounds using some of the methods mentioned in the article to exemplify the perceptual diffrerences. There are several different timbral features to account for, such as attack time, temporal envelope and spectral shape features. 

Notice that we chose to compare the Sound Morphing by Feature Interpolation to the standard interpolation principle using sinusoidal analysis parameters (ENV). The spectral envelope of the noise component is interpolated using the same technique as the sinusoidal part. Only the spectral shape features vary between the examples, since most temporal features can be manipulated independently.

Flute & Bass Clarinet

I chose this particular example to emphasize two perceptually important aspects of the model, namely the time alignment procedure and the residual modeling. The time alignment procedure allows to deal with the different temporal aspects of the sounds, such as duration, attack time, among others. Another important aspect of the model is the inclusion of a morphed residual that can be heard when morphing from the noisy flute sound to the clearer clarinet sound.
Classical Interpolation
of Sinusoidal Analysis		 Morphing by
Feature Interpolation
From Flute to Bass Clarinet

Clavi & Tuba

This example corresponds to the spectral envelopes shown in the figures and exemplifies morphing between a plucked string and a brass instrument, a very challenging transformation. 


Classical Interpolation
of Sinusoidal Analysis		 Morphing by
Feature Interpolation
From Tuba to Clavinet