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Echo method and apparatus for determining the watermark symbol in the received audio signal may include reverberation and / or noise
Echo method and apparatus for determining the watermark symbol in the received audio signal may include reverberation and / or noise
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机译：用于确定所接收的音频信号中的水印符号的回波方法和设备可以包括混响和/或噪声
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摘要
echo, after the transmission of the reverberation and / or watermarked audio signal through the acoustic path cause noise, the watermark detection correlation result peak value, within a limited time range around the main correlation result peak concentrated, time range was is much smaller than the total correlation length N. Watermark detection is based on the following. Marked the correlation result values for have not content with average or n in the probability distribution, which is expected to p of number of correlation result peak value v = (v 1 , v 2 , ..., v np ) when a given, within the window to cover the limited time range, greater than or in it these peaks v equal, the probability that there is a value of n p or more from the correlation result value set of N is calculated.
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机译：回声，在混响和/或带水印的音频信号通过声径传输引起噪声之后，水印检测相关结果的峰值在主要相关结果峰值集中的有限时间范围内集中，时间范围远小于总相关长度N。水印检测基于以下内容。将相关结果值标记为不满足平均值或概率分布中的n ，这可能是相关结果峰值的个数的p等于v =（v 1 ， v 2 ，...，v np ）当给定范围内的窗口覆盖有限的时间范围时，大于或等于这些峰值v等于概率从相关结果值N中计算出n p 或更大的值。
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