公开(公告)号：US20040037425A1

公开(公告)日：2004-02-26

申请号：US10639434

申请日：2003-08-13

Applicant: VIA Technologies, Inc.

Inventor： Ta-Jung Yeh ,  Wen-Lung Tseng ,  Ching-Jung Chu

IPC: H04R005/00

CPC classification number: H04S5/005

Abstract: A method for realizing virtual multi-channel by spectrum analysis is disclosed. The low-frequency-effect sound data is obtained by averaging sound data of left and right channels in the two-channel sound source and filtering the average by a first low pass filter. The central channel sound data is obtained by averaging sound data of the left and the right channels in the two-channel sound source and filtering the average by a second low pass filter. The surround right and left sound data is obtained by copying sound data of the left and the right channels in the two-channel sound source, respectively.

Abstract translation: 公开了一种通过频谱分析实现虚拟多通道的方法。 通过对双声道声源的左右声道的声音数据进行平均，并通过第一低通滤波器对平均值进行滤波，得到低频效果声音数据。 通过对双声道声源中的左右声道的声音数据进行平均，并通过第二低通滤波器对平均值进行滤波，得到中央声道声音数据。 通过在双声道声源中分别复制左右声道的声音数据来获得环绕左右声音数据。

公开(公告)号：US20040037426A1

公开(公告)日：2004-02-26

申请号：US10638422

申请日：2003-08-12

Applicant: VIA Technologies, Inc.

Inventor： Ching-Jung Chu ,  Ta-Jung Yeh ,  Feng-Sheng Chang ,  I-Cheng Tsou ,  Chi-Yi Lee ,  Weishang Chu

IPC: H04R005/00

CPC classification number: H04H20/89 ,  G06F3/162 ,  H04H20/95 ,  H04H60/04

Abstract: A apparatus formed on a motherboard of computer complied with PC99 standard for converting to six-channel output from two-channel is disclosed. The apparatus comprises a CODEC, a MIC_IN connector switch, first, second, and third filters, and a resistor circuit. In a six-channel output mode, the rear left and rear right surround signals and LINE_IN_L and LINE_IN_R signals are fed into the third filter.

Abstract translation: 公开了一种在计算机主板上形成的装置，符合PC99标准，用于从双通道转换为六通道输出。 该装置包括CODEC，MIC_IN连接器开关，第一，第二和第三滤波器以及电阻器电路。 在六通道输出模式下，后左右环绕信号和LINE_IN_L和LINE_IN_R信号被馈送到第三个滤波器。