SOUND QUALITY IMPROVING METHOD AND DEVICE, SOUND DECODING METHOD AND DEVICE, AND MULTIMEDIA DEVICE EMPLOYING SAME

SOUND QUALITY IMPROVING METHOD AND DEVICE, SOUND DECODING METHOD AND DEVICE, AND MULTIMEDIA DEVICE EMPLOYING SAME

A method of enhancing speech quality includes: generating a high-frequency signal by using a low-frequency signal in a time domain; combining the low-frequency signal with the high-frequency signal; transforming the combined signal into a spectrum in a frequency domain; determining a class of a deco...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: OSIPOV, Konstantin Sergeevich, POROV, Anton Viktorovich, OH, Eun-mi, CHOO, Ki-hyun, PARK, Woo-jung
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ACOUSTICS
MUSICAL INSTRUMENTS
PHYSICS
SPEECH ANALYSIS OR SYNTHESIS
SPEECH OR AUDIO CODING OR DECODING
SPEECH OR VOICE PROCESSING
SPEECH RECOGNITION
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Beschreibung
Zusammenfassung:A method of enhancing speech quality includes: generating a high-frequency signal by using a low-frequency signal in a time domain; combining the low-frequency signal with the high-frequency signal; transforming the combined signal into a spectrum in a frequency domain; determining a class of a decoded speech signal; predicting an envelope from a low-frequency spectrum obtained in the transforming; and generating a final high-frequency spectrum by applying the predicted envelope to a high-frequency spectrum obtained in the transforming.