Stereo synthesizer using comb filters and intra-aural differences
    2.
    发明授权
    Stereo synthesizer using comb filters and intra-aural differences 有权
    立体声合成器使用梳状滤波器和耳内差异

    公开(公告)号:US08019086B2

    公开(公告)日:2011-09-13

    申请号:US11560390

    申请日:2006-11-16

    IPC分类号: H04R5/00

    CPC分类号: H04S5/00 H04S2420/07

    摘要: A method for creating a stereophonic sound image out of a monaural signal combines two sub-methods. Comb filters decorrelate the left and right channel signals. Intra-aural difference cues, such as an Intra-Aural Time Difference (ITD) and an Intra-aural Intensity Difference (IID) separated channels. Strict complementary (SC) linear phase FIR filters divide the incoming monaural signal into three frequency band separation. The comb filters and ITD/IID applied to the low and high frequency bands create a simulated stereo sound image for the instruments other than human voice. Listening tests indicate that this invention provides a wider stereo sound image than previous methods, while retaining human voice centralization. Since the comb filter solution and ITD/IID solution can share the same filter bank, the computational cost of this method is almost the same as the previous method.

    摘要翻译: 用于从单声道信号创建立体声声像的方法组合了两种子方法。 梳状滤波器解除左右声道信号的相关性。 声内差异提示,例如内耳时间差(Intra-Aural Time Difference,ITD)和视听间强度差异(IID)分离频道。 严格互补(SC)线性相位FIR滤波器将输入的单声道信号分为三个频带分离。 梳状滤波器和应用于低频和高频带的ITD / IID为除人声外的乐器创建了模拟立体声图像。 听力测试表明,本发明提供了比以前的方法更宽的立体声图像,同时保持人声集中。 由于梳状滤波器解决方案和ITD / IID解决方案可以共享相同的滤波器组,因此该方法的计算成本与以前的方法几乎相同。

    Band-Selectable Stereo Synthesizer Using Strictly Complementary Filter Pair
    3.
    发明申请
    Band-Selectable Stereo Synthesizer Using Strictly Complementary Filter Pair 有权
    使用严格互补滤波器对的频段选择立体声合成器

    公开(公告)号:US20080118073A1

    公开(公告)日:2008-05-22

    申请号:US11560397

    申请日:2006-11-16

    IPC分类号: H04R5/00

    CPC分类号: H04S5/00

    摘要: 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.

    摘要翻译: 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。

    Band-selectable stereo synthesizer using strictly complementary filter pair
    4.
    发明授权
    Band-selectable stereo synthesizer using strictly complementary filter pair 有权
    频段可选的立体声合成器使用严格互补的滤波器对

    公开(公告)号:US07885414B2

    公开(公告)日:2011-02-08

    申请号:US11560397

    申请日:2006-11-16

    IPC分类号: H04R5/00

    CPC分类号: H04S5/00

    摘要: 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.

    摘要翻译: 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。

    Stereo synthesizer using comb filters and intra-aural differences
    5.
    发明申请
    Stereo synthesizer using comb filters and intra-aural differences 有权
    立体声合成器使用梳状滤波器和耳内差异

    公开(公告)号:US20080118072A1

    公开(公告)日:2008-05-22

    申请号:US11560390

    申请日:2006-11-16

    IPC分类号: H04R5/00

    CPC分类号: H04S5/00 H04S2420/07

    摘要: A method for creating a stereophonic sound image out of a monaural signal combines two sub-methods. Comb filters decorrelate the left and right channel signals. Intra-aural difference cues, such as an Intra-Aural Time Difference (ITD) and an Intra-aural Intensity Difference (IID) separated channels. Strict complementary (SC) linear phase FIR filters divide the incoming monaural signal into three frequency band separation. The comb filters and ITD/IID applied to the low and high frequency bands create a simulated stereo sound image for the instruments other than human voice. Listening tests indicate that this invention provides a wider stereo sound image than previous methods, while retaining human voice centralization. Since the comb filter solution and ITD/IID solution can share the same filter bank, the computational cost of this method is almost the same as the previous method.

    摘要翻译: 用于从单声道信号创建立体声声像的方法组合了两种子方法。 梳状滤波器解除左右声道信号的相关性。 声内差异提示,例如内耳时间差(Intra-Aural Time Difference,ITD)和视听间强度差异(IID)分离的频道。 严格互补(SC)线性相位FIR滤波器将输入的单声道信号分为三个频带分离。 梳状滤波器和应用于低频和高频带的ITD / IID为除人声外的乐器创建了模拟立体声图像。 听力测试表明,本发明提供了比以前的方法更宽的立体声图像,同时保持人声集中。 由于梳状滤波器解决方案和ITD / IID解决方案可以共享相同的滤波器组,因此该方法的计算成本与以前的方法几乎相同。

    Fixed-size cross-correlation computation method for audio time scale modification
    6.
    发明申请
    Fixed-size cross-correlation computation method for audio time scale modification 有权
    用于音频时间尺度修正的固定尺寸互相关计算方法

    公开(公告)号:US20050038534A1

    公开(公告)日:2005-02-17

    申请号:US10714175

    申请日:2003-11-14

    IPC分类号: G06F17/00 G10L21/00 G10L21/04

    CPC分类号: G10L21/04 G10L2013/021

    摘要: A time-domain time-scale modification method based on the synchronous overlap-and-add method consists of a generalization of the envelope-matching time-scale modification method. The cross-correlation function employs a fixed-size cross-correlation buffer to eliminate the need for normalization inside the search loop. This fixed-size cross-correlation buffer is the center of the overlap region corresponding to the case where the fine overlap adjustment value is set to zero. The computational cost of this invention is lower than any other method with a comparable quality.

    摘要翻译: 基于同步重叠法的时域时间尺度修正方法由包络匹配时间尺度修正方法的一般化构成。 互相关函数采用固定大小的互相关缓冲器,以消除对搜索循环内的归一化的需要。 该固定大小的互相关缓冲器是与精细重叠调整值设定为零的情况相对应的重叠区域的中心。 本发明的计算成本低于具有相当质量的任何其它方法。

    Seamless audio speed change based on time scale modification
    8.
    发明申请
    Seamless audio speed change based on time scale modification 有权
    基于时间尺度修改的无缝音频速度变化

    公开(公告)号:US20070078662A1

    公开(公告)日:2007-04-05

    申请号:US11244360

    申请日:2005-10-05

    IPC分类号: G10L21/04

    摘要: This invention involves time-scale modification of audio signals. The invention describes overlap and add time scale modification with variable input and output buffer sizes. Seamless speed change is achieved by keeping track of previously processed data to avoid discontinuities during playback speed transitions.

    摘要翻译: 本发明涉及音频信号的时间尺度修改。 本发明描述了具有可变输入和输出缓冲器大小的重叠和添加时间尺度修改。 通过跟踪先前处理的数据来避免无缝的速度变化,以避免在播放速度转换期间的不连续性。

    System signaling schemes for processor and memory module
    9.
    发明授权
    System signaling schemes for processor and memory module 失效
    用于处理器和存储器模块的系统信令方案

    公开(公告)号:US06185704B2

    公开(公告)日:2001-02-06

    申请号:US09058000

    申请日:1998-04-09

    IPC分类号: G11C2900

    CPC分类号: G06F12/0684 G11C5/04

    摘要: A computer system includes a main processing unit (12) coupled to a DSP/memory module (40). The DSP/memory module (40) includes semiconductor memory (42) and digital signal processor circuitry (44) including one or more digital signal processors (56). The DSP/memory module (40) may be placed in standard main memory sockets, such as a SIMM or DIMM sockets, and used as conventional main memory. The memory module can also be used in a smart mode, wherein the digital signal processor (56) performs operations on data for retrieval by the main processing unit (12).

    摘要翻译: 计算机系统包括耦合到DSP /存储器模块(40)的主处理单元(12)。 DSP /存储器模块(40)包括半导体存储器(42)和包括一个或多个数字信号处理器(56)的数字信号处理器电路(44)。 DSP /存储器模块(40)可以被放置在诸如SIMM或DIMM插槽的标准主存储器插槽中,并且被用作传统的主存储器。 存储器模块也可以以智能模式使用,其中数字信号处理器(56)对由主处理单元(12)检索的数据执行操作。