Skip to main content

Table 1 Results of synthetic speech analysis.

From: High-Quality Time Stretch and Pitch Shift Effects for Speech and Audio Using the Instantaneous Harmonic Analysis

  Harmonic transform method Instantaneous harmonic analysis
Signal 1—, random constant harmonic amplitudes
41.5 41.5 50.4 50.4
40 38.5 41.4 41.2 44.7
20 20.8 29.2 21.9 26.2
10 10.7 19.5 11.9 16.4
0 1.2 9.2 2.9 6.0
Signal 2— changes from 150 to 220 Hz at a rate of 0.1 Hz/ms, constant harmonic amplitudes that model sound [a]
41.5 41.5 48.3 48.3
40 38.2 40.7 41.0 44.3
20 21.0 29.5 22.1 26.4
10 11.0 20.3 12 17.1
0 1.3 9.3 2.7 6.5
Signal 3— changes from 150 to 220 Hz at a rate of 0.1 Hz/ms, variable harmonic amplitudes that model sequence of vowels
19.6 19.7 34.0 34.0
40 17.3 17.5 31.2 31.8
20 17.7 21.3 20.1 25.5
10 8.7 15.6 10.3 15.1
0 −0.8 7.55 0.94 5.2
Signal 4— changes from 150 to 220 Hz at a rate of 0.1 Hz/ms, variable harmonic amplitudes that model sequence of vowels, harmonic frequencies deviate from integer multiplies of on 10 Hz
13.2 14.0 26.9 27.0
40 10.6 11.9 24.8 25.3
20 11.9 13.6 19.3 22.7
10 6.9 12.1 9.6 14
0 −1.6 6.1 0.5 4.2