摘要
| 原文 | English |
|---|---|
| 專利號 | 5857000 |
| 出版狀態 | Published - 1800 |
指紋
引用此文
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Time domain aliasing cancellation apparatus and signal processing method thereof. / Yang, Jar-Ferr (Inventor).
專利號: 5857000.研究成果: Patent
TY - PAT
T1 - Time domain aliasing cancellation apparatus and signal processing method thereof
AU - Yang, Jar-Ferr
PY - 1800
Y1 - 1800
N2 - A time domain aliasing cancellation (TDAC) apparatus and its signal processing method to be used with the AC-3 high-fidelity audio signal compression system of the MPEG-2 international video standard. This invention proposes two preferred embodiments to realize the compression encoding and decoding processes of the TDAC apparatus. The first preferred embodiment employs a data reordering technique to change the TDAC encoding to a discrete cosine transform (DCT), and furthermore, it changes the TDAC decoding to a inverse discrete cosine transform (IDCT). This implementation has the least computational complexity. The second preferred embodiment utilizes data reordering to change the TDAC encoding and decoding into a type IV discrete cosine transformation, and then converts the DCT transformation into a 2nd order infinite impulse filter.
AB - A time domain aliasing cancellation (TDAC) apparatus and its signal processing method to be used with the AC-3 high-fidelity audio signal compression system of the MPEG-2 international video standard. This invention proposes two preferred embodiments to realize the compression encoding and decoding processes of the TDAC apparatus. The first preferred embodiment employs a data reordering technique to change the TDAC encoding to a discrete cosine transform (DCT), and furthermore, it changes the TDAC decoding to a inverse discrete cosine transform (IDCT). This implementation has the least computational complexity. The second preferred embodiment utilizes data reordering to change the TDAC encoding and decoding into a type IV discrete cosine transformation, and then converts the DCT transformation into a 2nd order infinite impulse filter.
M3 - Patent
M1 - 5857000
ER -