Main question: What is the encoding used for wav files? Unsigned PCM 8-bit, or is it another type?
I accidentally formatted my sd card with data I had yet to download. I was able to recover using a recovery wizard (Recuva), but my files are now corrupted. They have the same file size, but most audio players give an error message about a missing codec. I found a suggestion to change to a RAW format and import into Audacity. Using the defaults this works and I can barely hear recorded sounds but only through a significant amount of white noise. This indicates the the data is there. (I had downloaded about half of the data - 9 days of recording - before some technical glitches, so all was not lost, but it would be nice to get the full dataset back.)
The default file specification in Audacity is:
Encoding: Unsigned 8-bit PCM
Byte order: Little-endian
Start offset: 0 bytes
Sample rate: 44100 Hz
Are these the correct file properties for AudioMoth wav files?
Hi Alex, I seem to be having a similar issue as discussed above. A student of mine recorded many wav files with Audiomoths which seemingly are corrupted. Based on file size the data should be there, but it seems the file header is missing. I've attempted recovery using Audacity with the settings you've provided above, 16-bit little-endian, 360 byte header, but that didn't work. An example file can be found here: https://www.dropbox.com/s/fad3wsinlef7won/20221005_182801.WAV?dl=0. Any help would be much appreciated!