I just saw Practical Engineering's video on RR crossings, he mentions that they send AC signals down the tracks, sometimes in the audible range, to detect the train location. I wonder how that works! I am going to have to make some more higher sample rate recordings.
i wonder if the loud hf noise is from the traction motors, since you were listening to a diesel-electric loco similarly: i wonder if the atc track circuit (assuming this isn't dark territory) is contributing anything
Happy new year! Nice to see you. A very interesting upload. I wonder, as for the tracks, how long is each section? As I imagined that the tracks maybe adding a new rising tone until it gets to the new track, and as all the other wheels are behind the first wheels going over, the sound overlaps? But your assumption could very well be something to do with it. I am still quite busy with things here and still have to get a video up on your contact mics, bear with me!
Happy new year to you too! I'll have to look at the tracks again; interesting hypothesis. I'm glad to hear that you are staying busy, you aren't under any obligation to make a video unless you want to.
@@metalmarshmallowllc I feel I should defo make a video and point to your channel, if this helps in any way that is a bonus I would be very happy with! I don’t know any other channel dedicated to contact microphones where the developer knows the subject inside out and has an incredible passion in what they do.
I just saw Practical Engineering's video on RR crossings, he mentions that they send AC signals down the tracks, sometimes in the audible range, to detect the train location. I wonder how that works! I am going to have to make some more higher sample rate recordings.
Unexpected for sure! That is an uneasy sound. Would be perfect for a thriller movie score 😱
I legitimately had to stand in the freezing river with my socks and shoes on for that footage so you better subscribe 🔪🔪🔪
i wonder if the loud hf noise is from the traction motors, since you were listening to a diesel-electric loco
similarly: i wonder if the atc track circuit (assuming this isn't dark territory) is contributing anything
Interesting, I'm just realizing how much I don't know about how trains work!
Have you tried playing this sound on the midi keys?
Happy new year! Nice to see you.
A very interesting upload. I wonder, as for the tracks, how long is each section? As I imagined that the tracks maybe adding a new rising tone until it gets to the new track, and as all the other wheels are behind the first wheels going over, the sound overlaps? But your assumption could very well be something to do with it.
I am still quite busy with things here and still have to get a video up on your contact mics, bear with me!
Happy new year to you too! I'll have to look at the tracks again; interesting hypothesis. I'm glad to hear that you are staying busy, you aren't under any obligation to make a video unless you want to.
@@metalmarshmallowllc
I feel I should defo make a video and point to your channel, if this helps in any way that is a bonus I would be very happy with! I don’t know any other channel dedicated to contact microphones where the developer knows the subject inside out and has an incredible passion in what they do.
@@sr3d-microphones Aw thanks ☺