Audio device and method for generating surround sound having...

Details Audio device and method for generating surround sound having... Audio device and method for generating surround sound having...

2011-04-05

2011-04-05

Chin, Vivian (Department: 2614)

Electrical audio signal processing systems and devices

Binaural and stereophonic

Stereo speaker arrangement

C379S406010, C379S406080

Reexamination Certificate

active

07920711

ABSTRACT:
An audio device capable of easily generating two or more sets of surround signals based on 2-channel stereo signals and a method for generating surround sound are provided. The audio device100includes: an SL signal generation section20and a BL signal generation section40as first surround signal generation units for receiving an L signal and an R signal as 2-channel stereo signals, extracting a component of the R signal having high correlation with the L signal, subtracting the component from the L signal, thereby generating a first surround signal; and an SR signal generation section30and a BR signal generation section50as second surround signal generation units for extracting a component of the L signal having high correlation with the R signal, subtracting the component from the R signal, thereby generating a second surround signal. The level of subtracting a component from the L signal or the R signal for generating the first or second surround signal is differentiated each other between the plural sets.

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