PSHF:  Demonstrations

Here is an example of the decomposition, using one of the Aurora 2.0 files, produced using our implementation of the PSHF in C,

Female utterance "1-4-7-3-5-3-3":	original speech	periodic part	aperiodic part

Here is another example, with accompanying plots of the signals and spectra (click to enlarge),

Male utterance "zero-two-six-zero":	original speech	periodic part	aperiodic part

Fig. 1. (a) Waveforms.	(b) Narrowband spectrograms.	(c) MFCC-based spectrograms.

Here is a noise-corrupted example from the Aurora 2.0 files, showing the performance at +5 dB SNR,

Female utterance "one-three-four-five":	clean speech	input signal	periodic output	aperiodic output
speech files:
spectrograms:

Here's a final example, taken from the thesis where the PSHF was developed (Jackson 2000),

Male utterance [phaza]:  original speech     periodic part     aperiodic part

Fig. 2. Wide-band (upper half, 5 ms) and narrow-band (lower half, 43 ms) spectrograms (Hann window, 4 times zero-padded, fixed grey-scale) of [paza] by PJ, computed (top) from the original signal s(n), (middle) from the periodic estimates of the voiced component v(n), and (bottom) from the aperiodic estimates of the unvoiced component u(n).