Hilbert decomposition splits sound into envelope and fine structure for controlled re-synthesis

Evidence

These tone tokens were processed through a 16-channel chimerizer in which the FS and E of any two different tone tokens of the same syllable were swapped. For example, two tokens of the same syllable but with different tone patterns were passed through 16 band-pass filters to split each sound into 16 channels. The output of each filter was then divided into its E and FS using a Hilbert transform. Then, the E of the output in each filter band was exchanged with the E in that band for the other token to produce the single-band chimeric wave. — Dijk, Pim van, Physiology, Psychoacoustics and…, 3385

Categorization

• DEFINE: Concrete step-by-step description of how chimeric auditory stimuli are physically synthesized via Hilbert transform.