I have a perhaps strange question. First let me introduce it with an observation i made today during field recording. I just got back to my studio and I am listening to the recordings and I am quite happy with the overall sound, but i am bothered by something.
Today I was recording bypassing cars on a relatively busy street with cars driving at 50 km/h speed. I was monitoring through my headphones and using an m/s setup (mkh30/20). I noticed that all the cars approaching had a distinct shorter arrival time in comparison to their passing time. Or better said: the envelope was about 1:2 being 5 seconds fade in and 10 seconds fade out. (I hope anyone understands this :)
My microphones where pointing at the road in a 90 degree (horizontal) angle. So the sounds theoretically should be approaching 1:1. In the studio I am still hearing this effect. Oh and yes I am using an MS matrix to fold to stereo :)
OK so now finally my questions:
- Am I going crazy or is this just Doppler playing with my senses?
- Is this why SFX recordists' normally point there mic's at the vehicle?
I will upload a short snippet via Soundcloud asap. Just need the find an isolated by-pass.
Thanks in advance!