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| 来源： | Freesound 前往原页面 查看译文 |
| 作者： | kwahmah_02 |
| 许可： | CC-BY 保留署名许可协议 |
| 描述： | Recording of the digital numbers station XPA2 on shortwave, which uses various tones to signify the numbers. Picked up and recorded with Twente university's online radio receiver. |
| 标签： | MFSK electronic polytone shortwave tones radio beep XPA2 FSK XPA encrypted numbersstation |
| 音频格式 | wav |
| 声音时长 | 02:39 |
| 文件大小 | 2.2 MB |
| 比特率 | 116 kbps |
| 采样率 | 7119 Hz |
| 位深度 | 16 bit |
| 声道 | 立体声 |