Electrical audio signal processing systems and devices – Sound effects
Reexamination Certificate
2004-03-19
2008-10-21
Chin, Vivian (Department: 2615)
Electrical audio signal processing systems and devices
Sound effects
C381S098000
Reexamination Certificate
active
07440576
ABSTRACT:
Provided is an apparatus and method for reconstructing the high frequency part of audio signal to improve the quality of the audio signal. The apparatus includes a frequency inverter which inverts the frequency of an input signal; a band-pass filter which filters the high frequency part of the inverted signal; a converter which shifts the frequency of the filtered signal so as not to generate aliasing of the input signal and the filtered signal; and an adder which adds the shifted signal to the input signal. Therefore, hearing perception close to the original signal can be achieved.
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Jeon Seung-hun
Petukhov Andrey Sergeevich
Sviridenko Vladimir Alexandrovich
Udina Tatiana Mikhailovna
Chin Vivian
Monikang George C
Samsung Electronics Co,. Ltd.
Sughrue & Mion, PLLC
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