py-intelligibility

Python implementation of the following speech intelligibility prediction methods: weighted Spectro-Temporal Modulation Index (wSTMI) Spectro-Temporal Glimpsing Index (STGI)

Usage

The functions wstmi and stgi take three inputs:

d = pywstmi(clean_speech, degraded_speech, sampling_frequency)
d = pystgi(clean_speech, degraded_speech, sampling_frequency)

• clean_speech: A numpy array containing a single-channel clean (reference) speech signal.
• degraded_speech: A numpy array containing a single-channel degraded/processed speech signal.
• sampling_frequency: The sampling frequency of the input signals in Hz.

Note that the clean and degraded speech signals must be time-aligned and of the same length.

References

If you use pywstmi or pystgi, please cite the references [1] and [2], respectively:

[1] A. Edraki, W.-Y. Chan, J. Jensen, & D. Fogerty, “Speech Intelligibility Prediction Using Spectro-Temporal Modulation Analysis,” IEEE/ACM Trans. Audio, Speech, & Language Processing, vol. 29, pp. 210-225, 2021.
[2] A. Edraki, W.-Y. Chan, J. Jensen, & D. Fogerty, “A Spectro-Temporal Glimpsing Index (STGI) for Speech Intelligibility Prediction," Proc. Interspeech, 5 pages, Aug 2021.