Method and apparatus for processing digital audio signal

Details Method and apparatus for processing digital audio signal Method and apparatus for processing digital audio signal

2006-04-04

2006-04-04

Chin, Vivian (Department: 2644)

Data processing: generic control systems or specific application

Specific application, apparatus or process

Digital audio data processing system

C381S061000, C381S101000, C381S102000, C381S106000, C084S616000

Reexamination Certificate

active

07024260

ABSTRACT:
Maximal and minimal values represented by samples of a digital audio signal are detected. A number of samples from a sample representing a minimal value to a maximal-value-corresponding sample is detected. A number of samples from a sample representing a maximal value to a minimal-value-corresponding sample is detected. Calculation is given of a first difference between the maximal-value-corresponding sample and the immediately-preceding sample. Calculation is given of a second difference between the minimal-value-corresponding sample and the immediately-preceding sample. First and second coefficients are calculated from the detected sample numbers. The first coefficient and the first difference are multiplied to generate a first multiplication result. The second coefficient and the second difference are multiplied to generate a second multiplication result. The maximal value represented by the maximal-value-corresponding sample is incremented by the first multiplication result. The minimal value represented by the minimal-value-corresponding sample is decremented by the second multiplication result.

REFERENCES:
patent: 6449519 (2002-09-01), Kuwaoka
patent: 11-126097 (1999-05-01), None
patent: 11-144382 (1999-05-01), None

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