audiowmark:音频水印
audiowmark - 音频水印
描述
audiowmark是用于音频水印的开源 (GPL) 解决方案。
声音文件由软件读取，并且128位消息存储在输出声音文件中的水印中。 对于人类听众来说，这些文件通常听起来是一样的。
但是，可以从输出声音文件中检索 128 位消息。 我们的测试表明，即使将文件转换为 mp3 或 ogg（比特率 128 kbit/s 或更高），通常也可以毫无问题地检索水印。 检索消息的过程不需要原始音频文件（盲解码）。
在内部，audiowmark 使用拼凑算法来隐藏音频文件频谱中的数据。 信号被分成 1024 个样本帧。 对于每一帧，1024 值 FFT 的频带的一些伪随机选择的幅度略有增加或减少，稍后可以检测到。 此处使用的算法的灵感来自
Martin Steinebach: Digitale Wasserzeichen für Audiodaten.
Da
文件下载
资源详情
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