公开(公告)号：US20130044894A1

公开(公告)日：2013-02-21

申请号：US13210048

申请日：2011-08-15

Applicant: SAMSUDIN ,  SAPNA GEORGE

Inventor： SAMSUDIN ,  SAPNA GEORGE

IPC: H04R3/00

CPC classification number: H04R3/005 ,  H04R5/027 ,  H04S7/30 ,  H04S2400/15 ,  H04S2420/07

Abstract: A system and method for generating virtual microphone signals having a particular number and configuration for channel playback from an intermediate set of signals that were recorded in an initial format that is different from the channel playback format. In one embodiment, an initial set of intermediate are Bark-banded such that each intermediate signal may lead to a corresponding power spectral density (PSD) signal representative of the initial intermediate signal. Further, one may generate cross-correlations signals for each pair of intermediate signals. Next, from the PSDs and cross correlations, one may more efficiently calculate corresponding channel signals to be used for playback on respective channel speakers. Thus, the PSDs of each channel signal may be generated at chosen angles (as well as other design factors). Further, each channel signal may also be further modified with a corresponding cancellation signal that further enhances the resultant signal in each channel.

Abstract translation: 一种用于生成具有特定数量和配置的虚拟麦克风信号的系统和方法，用于从以信道播放格式不同的初始格式记录的中间信号集合进行频道播放。 在一个实施例中，初始中间集合是Bark带状的，使得每个中间信号可以导致表示初始中间信号的对应的功率谱密度（PSD）信号。 此外，可以为每对中间信号产生互相关信号。 接下来，从PSD和互相关，可以更有效地计算要用于在相应的频道扬声器上重放的相应的频道信号。 因此，每个通道信号的PSD可以以选定的角度（以及其他设计因素）产生。 此外，每个信道信号还可以用相应的消除信号进一步修改，进一步增强每个信道中的合成信号。