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    Apparatus for checking audio signal processing systems
    1.
    发明授权
    Apparatus for checking audio signal processing systems 失效
    用于检查音频信号处理系统的装置

    公开(公告)号：US5014318A

    公开(公告)日：1991-05-07

    申请号：US439394

    申请日：1989-10-25

    申请人： Hartmut Schott ,  Dieter Seitzer ,  Heinz Gerhauser ,  Karlheinz Brandenburg ,  Ernst Eberlein ,  Stefan Krageloh ,  Rolf Kapust ,  Harald Popp

    发明人： Hartmut Schott ,  Dieter Seitzer ,  Heinz Gerhauser ,  Karlheinz Brandenburg ,  Ernst Eberlein ,  Stefan Krageloh ,  Rolf Kapust ,  Harald Popp

    IPC分类号： G10L11/00 ,  G10L21/02 ,  G11B20/18 ,  H04B14/04 ,  H04H20/88

    CPC分类号： H04H20/88 ,  H04B14/04

    摘要： Disclosed is an apparatus for checking audio signal processing systems. The apparatus has the following features:the apparatus is provided with a first input connection, to which the input signal of the audio processing system to be checked is transmitted, a second input connection, to which the output signal of said system is transmitted, and a signal processor.said signal processor ascertains the signal delay time of said system to be checked by means of correlating said signals received at said two input connections,said signal processor always composes the difference signal from said signal received at said first input connection during a specific time span and said signal received at said second input connection, lagging by the signal delay time,said signal processor ascertains the spectral composition of said signal received at said first input connection during said specific time span and of said respective difference signal,said signal processor ascertains the hearing threshold of the human ear from said spectral composition and compares the ascertained hearing threshold with the respective difference signal.

    摘要翻译： PCT No.PCT / DE89 / 00110 Sec。 371日期：1989年10月25日 102（e）日期1989年10月25日PCT提交1989年2月25日PCT公布。 公开号WO89 / 08357 日期为1989年9月8日。公开是用于检查音频信号处理系统的装置。 该装置具有以下特征：该装置具有第一输入连接，待检查的音频处理系统的输入信号被发送到该第一输入连接，传输所述系统的输出信号的第二输入连接;以及 信号处理器。 所述信号处理器通过将在所述两个输入连接处接收到的所述信号相关来确定要检查的所述系统的信号延迟时间，所述信号处理器总是在特定时间跨度期间组合来自在所述第一输入连接处接收的所述信号的差信号， 所述信号在所述第二输入连接处被接收，滞后于所述信号延迟时间，所述信号处理器确定在所述特定时间跨度期间在所述第一输入连接处接收到的所述信号的频谱组成以及所述各个差分信号，所述信号处理器确定听觉 阈值，并将所确定的听力阈值与相应的差分信号进行比较。