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| 来源： | Freesound 前往原页面 查看译文 |
| 作者： | craigsmith |
| 许可： | CC0 公众共享许可协议 |
| 描述： | Twotone siren gets louder as it gets closer. Rapid tone, two highpitched notes. These are highquality copies of original nitrate optical Hollywood sound effects from the 1930s 40s, transferred to fulltrack tape in the early 1970s. I have digitized them for preservation, but they have not been restored and have some noise. |
| 标签： | Emergency Optical Vintage Sirens |
| 音频格式 | wav |
| 声音时长 | 00:16 |
| 文件大小 | 2.5 MB |
| 比特率 | 1274 kbps |
| 采样率 | 48000 Hz |
| 位深度 | 24 bit |
| 声道 | 立体声 |