Time-domain harmonic scaling explained

Time-domain harmonic scaling (TDHS) is a method for time-scale modification of speech (or other audio signals),^[1] allowing the apparent rate of speech articulation to be changed without affecting the pitch-contour and the time-evolution of the formant structure.^[2] TDHS differs from other time-scale modification algorithms in that time-scaling operations are performed in the time domain (not the frequency domain).^[3] TDHS was proposed by D. Malah in 1979.^[4]

External links

• PICOLA and TDHS

Notes and References

1. Richard V. Cox . Ronald E. Crochiere . James D. Johnston . February 1983 . Real-time implementation of time domain harmonic scaling of speech for rate modification and coding . IEEE Transactions on Acoustics, Speech, and Signal Processing . ASSP-31 . 1 . 258–272 . 10.1109/JSSC.1983.1051894 . 1983IJSSC..18...10C .
2. Moulines, Eric . Jean Laroche. . amp . Non-parametric techniques for pitch-scale and time-scale modification of speech. . Speech Communication . 16 . 2 . 1995 . 175–205 . 10.1016/0167-6393(94)00054-e.
3. D. Malah, R.E. Crochiere, and R.V. Cox. . Performance of transform and subband coding systems combined with harmonic scaling of speech . IEEE Transactions on Acoustics, Speech, and Signal Processing . 29 . 2 . 1981 . 273–283 . 10.1109/tassp.1981.1163547.
4. David Malah . April 1979 . Time-domain algorithms for harmonic bandwidth reduction and time scaling of speech signals . IEEE Transactions on Acoustics, Speech, and Signal Processing . ASSP-27 . 2 . 121–133 .