Speech band extension device

Details Speech band extension device Speech band extension device

2011-08-16

2011-08-16

Cyr, Leonard Saint (Department: 2626)

Data processing: speech signal processing, linguistics, language

Audio signal time compression or expansion

C704S211000, C704S500000, C704S501000, C704S502000, C704S504000

Reexamination Certificate

active

08000976

ABSTRACT:
A speech band extension device (100), which generates an audio signal capable of realizing natural audibility after speech band extension, includes a band-extended audio generator which generates a band-extended audio signal from an original audio signal, the band-extended audio signal including components lying within a frequency band that is not included in a frequency band of the original audio signal, and an adjustment adder (20) which detects a timing shift between the original audio signal and the band-extended audio signal, adjusts timing of the original audio signal and timing of the band-extended audio signal in accordance with the detected timing shift, and combines the both signals after the adjusting of the timing, wherein the detection of the timing shift is performed, for example, using zero-crossing and cross-correlation.

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