Apparatus of voice bandspreading and method of same

Apparatus of voice bandspreading and method of same

  • CN 102,034,482 A
  • Filed: 06/04/2010
  • Published: 04/27/2011
  • Est. Priority Date: 09/29/2009
  • Status: Active Application
First Claim
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1. voice band extension device, this voice band extension device receives the voice signal that bandwidth is restricted via communication line, and the frequency band of described voice signal is expanded, and it is characterized in that this voice band extension device has:

  • Signal Separation portion, it is separated into described voice signal the extraction noise signal after the frequency component of having removed the noise remove signal behind the noise and removed described noise remove signal from the frequency component of described voice signal from the frequency component of described voice signal;

    Noise remove component of signal extension, it replenishes the signal that frequency band is higher than the frequency band of described noise remove signal to described noise remove signal, generates expanded noise and removes signal;

    Extract noise signal component extension, it replenishes the signal that frequency band is higher than the frequency band of described extraction noise signal to described extraction noise signal, generates expansion and extracts noise signal;

    The signal intensity adjusting portion, it is regulated either party in described expanded noise removal signal and the described expansion extraction noise signal or both sides'"'"' signal intensity;

    AndSignal synthesizes handling part, and described expanded noise after being regulated by described signal intensity adjusting portion is removed signal for it and described expansion extraction noise signal is synthesized.

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