ESTIMATION OF MIXING FACTORS TO GENERATE HIGH-BAND EXCITATION SIGNAL

ESTIMATION OF MIXING FACTORS TO GENERATE HIGH-BAND EXCITATION SIGNAL

A method (500) includes generating (502) a high-band residual signal (224) based on a high-band portion (124) of an audio signal. The method also includes generating (504) a harmonically extended signal (208) at least partially based on a low-band portion of the audio signal (144). The method furthe...

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Hauptverfasser: ATTI, Venkatraman S, KRISHNAN, Venkatesh
Format: Patent
Sprache:eng
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Zusammenfassung:A method (500) includes generating (502) a high-band residual signal (224) based on a high-band portion (124) of an audio signal. The method also includes generating (504) a harmonically extended signal (208) at least partially based on a low-band portion of the audio signal (144). The method further includes determining (506) a mixing factor based on the high-band residual signal, the harmonically extended signal, and modulated noise (220). The modulated noise is at least partially based on the harmonically extended signal (208) and white noise (205). Figure 2