4 ms·
Best would be to contact the video source and ask exactly what the audio track is. I don't think the video shows the pings from the blackbox. More likely they
by sabman 13y ago
Best would be to contact the video source and ask exactly what the audio track is.
I don't think the video shows the pings from the blackbox. More likely they are the chirp pings from a sidescan sonar. They are looking for an shadow (image) of the blackbox in the data. Here is a nice diagram showing what they are looking for: http://www.southwestcoastalgroup.org.uk/cc_mon_sidescan.html http://www.southwestcoastalgroup.org.uk/cc_mon_sidescan.html
- kevinchen 13y agoDoubtful; why would they be worried about the black box pinger's battery running out then? Also, it's much easier to listen for the pings than to look for visual indication, since the pings can be analyzed by DSP software.
- thommo101 13y agoThe video shows a moving spectrogram of the received signal from the TPL-25 towed pinger locator. It has nothing to do with sidescan sonar. In fact they explicitly have not launched the sidescan capable Bluefin21 AUV because of fears of acoustic contamination of the towed pinger audio.