I'm assuming that by "sort by frequencies" you mean the frequency of the call itself, not the frequency of the audio recording (for example, a call at 1KHz vs a recording at a sample rate of 48KHz). My recommendation would be to use R (seewave/tuneR) to generate mean spectra of the recordings (... (read more)
I'm not a domain expert like most people in this forum, but I have created XML schemas using object oriented (OO) principles in the past; the same capability exists with JSON schemas.
The important thing is to create a heirarchy of schemas, starting with a... (read more)
When you mention 'location' you refer to the location of the images from where they are imported from? And not the gps location from the EXIF data if it's available, right?
Yes, that's right -- I should have said the 'directory of those images'.... (read more)