Data processing: speech signal processing – linguistics – language – Audio signal bandwidth compression or expansion – With content reduction encoding
Reexamination Certificate
2003-12-29
2008-08-05
Opsasnick, Michael N (Department: 2626)
Data processing: speech signal processing, linguistics, language
Audio signal bandwidth compression or expansion
With content reduction encoding
C704S502000
Reexamination Certificate
active
07409350
ABSTRACT:
An audio processing method utilized to generate an audio stream. An audio frame includes N frequency subbands. An Ith frequency subband among the N frequency subbands includes M audio samples and has an Ith psychoacoustic masking value. First, an Ith offset of the Ith frequency subband is calculated. Then, the Ith psychoacoustic masking value and the Ith offset are inputted into a projection formula to generate an Ith projection value. According to the Ith projection value and a limit range, an Ith scale factor is determined. Subsequently, the M audio samples in the Ith frequency subband are adjusted according to the Ith scale factor.
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MediaTek Inc.
Opsasnick Michael N
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