公开(公告)号：US20080118073A1

公开(公告)日：2008-05-22

申请号：US11560397

申请日：2006-11-16

Applicant: Ryo Tsutsui ,  Yoshihide Iwata ,  Steven D. Trautmann

Inventor： Ryo Tsutsui ,  Yoshihide Iwata ,  Steven D. Trautmann

IPC: H04R5/00

CPC classification number: H04S5/00

Abstract: A new method is proposed that produces stereophonic sound image out of monaural signal within a selected frequency regions. The system employs a strictly complementary (SC) linear phase FIR filter pair that separates input signal into different frequency regions. A pair of comb filters is applied to one of the filter's output. This implementation allows a certain frequency range to be relatively localized at center while the other sounds are perceived in a wider space.

Abstract translation: 提出了一种新的方法，其在选定的频率区域内的单声道信号产生立体声声像。 该系统采用将输入信号分离成不同频率区域的严格互补（SC）线性相位FIR滤波器对。 一对梳状滤波器应用于滤波器的输出之一。 该实现允许将某一频率范围相对地定位在中心，而在更宽的空间中感知到其他声音。

公开(公告)号：US20080118071A1

公开(公告)日：2008-05-22

申请号：US11560387

申请日：2006-11-16

Applicant: Steven D. Trautmann ,  Ryo Tsutsui

Inventor： Steven D. Trautmann ,  Ryo Tsutsui

IPC: H04R5/00

CPC classification number: H04S5/00 ,  H04S1/002 ,  H04S2420/03

Abstract: A method of converting single channel audio (mono) signals to two channel audio (stereo) signals using simple filters and an Intra-aural Time Difference (ITD) is presented. This method does not distort the spectral content of the original signal very much, and has low computation requirements. A variation is proposed which also uses Intra-aural Intensity Difference (IID).

Abstract translation: 提出了使用简单滤波器和心内时间差（ITD）将单声道音频（单声道）信号转换为双声道音频（立体声）信号的方法。 该方法不会使原始信号的频谱含量变形不大，计算量低。 提出了一种也使用心内强度差异（IID）的变异。