Pulse or digital communications – Systems using alternating or pulsating current
Reexamination Certificate
2006-12-19
2006-12-19
Tran, Khai (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
C704S203000, C704S207000
Reexamination Certificate
active
07151802
ABSTRACT:
In a method and device for recovering the high frequency content of a wideband signal previously down-sampled, and for injecting this high frequency content in an over-sampled synthesized version of the wideband signal to produce a fill-spectrum synthesized wideband signal, a random noise generator produces a noise sequence having a given spectrum. A spectral shaping unit spectrally shapes the noise sequence in relation to linear prediction filter coefficients related to the down-sampled wideband signal. A signal injection circuit finally injects the spectrally-shaped noise sequence in the over-sampled synthesized signal version to thereby produce the full-spectrum synthesized wideband signal.
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Bessette Bruno
Lefebvre Roch
Salami Redwan
Darby & Darby
Tran Khai
Voiceage Corporation
Ware Cicely
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