Hello community, i am new to this world, i come from fine arts and in need some advice to take advantage of the Audiomoth. I would like to 1- auto select frequency patterns on the spectrogram for the counting of the call of certain animals on long recordings, not sure what sound editor i can use for this (for example counting the call of the frog 45 times in one hour).
2- I don't understand how i can visualize the full frequency spectrum of a 96 khz or more on a regular audio editor like Audition. It seems that the interface only shows until 44khz.
3- What is the best method to listen to more than 20 khz inaudible sounds ?..pitch /slow down... ? thanks!
Oh yes... you can also assign labels to segments of the recording and then save the label track (giving it the same name as your .wav file but with a .txt extension) to make a permanent record of your observatons during the analysis.
Counting the calls is tricky and will probably need some specialist software, depending on the frequency range and structure of the calls, although Kaleidoscope viewer or Avisoft SASLab Lite may be able to do something of the sort just based on signal amplitude (might be combined with some pre-filtering?). Audacity as a general purpose spectrogram viewer is my personal favourite for long(ish) recordings (as opposed to 4-5s samples from a triggered stand-alone recording system). The spectrogram will show the full bandwidth defined by the sampling rate in the recording. You may need to look at the spectrogram settings under preferences to ensure that the spectrogram is fully expanded and to set the appropriate gain and FFT parameters which will depend somewhat on you sample rate and on the resolution and size of your screen. It is best to set the gain so that the background noise level is just visible so that you don't miss quiet calls. If you click the * mode then zooming and panning can be done very intuitively witht he mouse - check the preferences keyboard and mouse settings for a list of key and mouse shortcuts.