Automatic audio morphing

This paper describes techniques to automatically morph from one sound to another. Audio morphing is accomplished by representing the sound in a multi-dimensional space that is warped or modified to produce a desired result. The multi-dimensional space encodes the spectral shape and pitch on orthogonal axes. After matching components of the sound, a morph smoothly interpolates the amplitudes to describe a new sound in the same perceptual space. Finally, the representation is inverted to produce a sound. This paper describes representations for morphing, techniques for matching, and algorithms for interpolating and morphing each sound component. Spectrographic images of a complete morph are shown at the end.

[1]  Richard F. Lyon,et al.  Auditory model inversion for sound separation , 1994, Proceedings of ICASSP '94. IEEE International Conference on Acoustics, Speech and Signal Processing.

[2]  Mei Yong.  A new LPC interpolation technique for CELP coders , 1994, IEEE Trans. Commun..

[3]  Xavier Rodet,et al.  Tracking of partials for additive sound synthesis using hidden Markov models , 1993, 1993 IEEE International Conference on Acoustics, Speech, and Signal Processing.

[4]  Bryan Holloway,et al.  Timbre morphing of sounds with unequal numbers of features , 1995 .

[5]  George R. Doddington,et al.  An integrated pitch tracking algorithm for speech systems , 1983, ICASSP.

[6]  Michele Covell,et al.  Spanning the gap between motion estimation and morphing , 1994, Proceedings of ICASSP '94. IEEE International Conference on Acoustics, Speech and Signal Processing.