While searching through the bird song literature, I realized there are two schools for recording songs. Some people use a directional microphone and some people use a parabola.
I was wondering why to chose one over the other... and what sort of measurements can be done on the recordings made by each device.
- For example, I understand that a parabola acts like a high pass frequency filter before the recording is made, and that there is distortions happening if the bird is "too close" to the microphone. So is it still possible to perform accurate frequency measurements from a recording made with a parabola?
- Is it possible to calibrate a parabola and extract amplitude measurements form the recordings (provided I know the distance to the bird)?
- What about recording distance, can I get clean recordings over a long distance with a directional microphone?