Bandwidth extension of narrowband speech

Details Bandwidth extension of narrowband speech Bandwidth extension of narrowband speech

G - Physics

10

L

G10L 21/02 (2006.01) G10L 21/00 (2006.01)

Patent

CA 2570750

A system extends the bandwidth of a narrowband speech signal into a wideband spectrum. The system includes a high-band generator that generates a high frequency spectrum based on a narrowband spectrum. A background noise generator generates a high frequency background noise spectrum based on a background noise within the narrowband spectrum. A summing circuit linked to the high-band generator and the background noise generator combines the high frequency spectrum and narrowband spectrum and the high frequency background noise spectrum.

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