The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 21, 2008
Filed:
Mar. 19, 2004
Seung-hun Jeon, Seoul, KR;
Andrey Sergeevich Petukhov, Moscow, RU;
Vladimir Alexandrovich Sviridenko, Moscow, RU;
Tatiana Mikhailovna Udina, Zelenograd, RU;
Seung-hun Jeon, Seoul, KR;
Andrey Sergeevich Petukhov, Moscow, RU;
Vladimir Alexandrovich Sviridenko, Moscow, RU;
Tatiana Mikhailovna Udina, Zelenograd, RU;
Samsung Electronics Co., Ltd., Suwon, KR;
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.