It’s important to start from an acknowledgement that sound is always situated – you can’t separate a sound that you hear from the environment that you hear it in: reflective and absorptive surfaces, air temperature and humidity, other sounds present all influence what one hears. – could prove tricky when trying to pinpoint when obstructions become surroundings or vice versa.
-sound/sea waves – replication/recreation is unattainable
If you want to mobilise terms such as ‘natural’, you also need to be able to define what is not natural according to the argument that you’re putting forward. The same goes for ‘spontaneous’ or ‘authentic’ – you would need to define what you mean for each of these terms. – spontaneous meaning, in the simplest of terms, ‘by way of the world’. authentic might take a some time to define.
When speaking of ecologies, it is important to take into account that humans also are ecological beings. Perhaps thinking of the separation between human technology and nature would be more useful.