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| 来源： | Freesound 前往原页面 查看译文 |
| 作者： | dobroide |
| 许可： | CC-BY 保留署名许可协议 |
| 描述： | the text 'http://freesound.iua.upf.edu' made with noise at a frequency NOT AUDIBLE. If mixed with a common audio file (see examples in this pack) this file could be used as a digital watermark. You can see it looking at the spectrogram. In Audacity, for example, select the spectrum view instead of the more commonly used waveform view. To get a decent resolution the spectrogram should have a relatively narrow FFT band (1024 or above), results are best in grayscale. The original stero audio file was produced with GNU/GPL Enscribe 0.0.4 by Jason Downer, then converted to converted to a single channel with Audacity |
| 标签： | enscribe steganography watermark |
| 音频格式 | wav |
| 声音时长 | 00:12 |
| 文件大小 | 1 MB |
| 比特率 | 692 kbps |
| 采样率 | 44100 Hz |
| 位深度 | 16 bit |
| 声道 | 立体声 |