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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

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  1. J

    Question about post-processing: getting audio-bombed

    There are a few high peaks in this recording and ‘distortion’ at one point. I haven’t checked the peak level, but I think the audio is clipped. Thunderstorms are quite hard to record as there is a large dynamic range between the quiet and loud bits. Obviously, if you normalise the whole file...
  2. J

    Question about post-processing: getting audio-bombed

    No sure this is true. If you play a clipped file it will be distorted when you play back, even in a 32 bit float recording. Clipping is when the recording goes above 0dbfs. With 32 bit float although playback will be distorted, the data above 0dbfs is not lost (it is with none float...
  3. J

    Question about post-processing: getting audio-bombed

    When you say the have distortion, have you normalised the level to less than 0dBfs? Or are you trying to play a clipped audio. Not an Audacity user, but I think to normalise the menu selection is Effect -> Volume and compression -> Loudness Normalization... to open the Loudness Normalization...
  4. J

    Question about post-processing: getting audio-bombed

    Looking at Audacity, I don’t think the spectral editing tools include a copy and paste function. You only seem to be able to select a region of the sonogram and delete the audio or apply effects. If this is the limit of Audacity’s function, you would need to be a bit more careful with as...
  5. J

    Question about post-processing: getting audio-bombed

    You can try using an equaliser function, but I think this works best for low frequency knocks (from handling) and wind noise. With the equaliser that I use, you get a display of the sound intensity against frequency, so you can listen a few times, see the frequencies where the vocals are, then...
  6. J

    Question about post-processing: getting audio-bombed

    For transient sounds such as the type 1 sounds you mention, I would try the following 1/ use a spectral editing tool to copy a very short interval from a quite area of the sonogram, ideally from immediately before the click or pop, then paste this over the top of the unwanted sound. This is...
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