MOBILE TO MOBILE DIGITAL WIRELESS CONNECTION HAVING ENHANCEDVOICE QUALITY

This invention is directed toward improving the subjective voice quality of a mobile to mobile phone call having tandem vocoder processing by modifying the spectrum of the voice signal before it is processed by the second vocoder to compensate for digita l distortion which is generated by the second...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: TARRAF, AHMED A, SHERIF, MAHMOUD RAGAEI
Format: Patent
Sprache:eng ; fre
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Beschreibung
Zusammenfassung:This invention is directed toward improving the subjective voice quality of a mobile to mobile phone call having tandem vocoder processing by modifying the spectrum of the voice signal before it is processed by the second vocoder to compensate for digita l distortion which is generated by the second vocoder. An adaptive filter can be used to modify th e spectrum of the voice signal. With this invention, the voice quality of a call from a first mobile phone to a second mobile phone has a quality that is substantially similar to the voice qualit y of a call from a mobile phone to a desk phone.