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Speech zero-crossing rate compression for bandwidth compression

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2 Author(s)
Done, W. ; University of Utah, Salt Lake City, Utah. ; Kirlin, R.L.

As analysis performed on a proposed special purpose hearing aid yields data on single-sidebanded voice zero-crossing rates extracted by a phase-locked loop (PLL), and also data on the logarithmically compressed voltage analog of the zero-crossing rate. The PLL demodulation is shown to correspond well with first and second formats of the eight vowels analyzed. Three fricatives were also investigated.

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Acoustics, Speech and Signal Processing, IEEE Transactions on  (Volume:23 ,  Issue: 5 )