I am on a road bike and when I descend quickly going downhill and lean severely into tight turns I almost feel a ringing crunchiness type feeling and it seems like one spoke is receiving more stress than the others. It only happens when I am turning left as well... Not sure how to explain it further but wondering if anyone could diagnose what is going on from this amount of information.
I once noticed something similar to this when climbing up a hill. The "grinding" sound was coming from a couple loose spokes.
For a complete diagnosis you will need to provide more information and I can update my answer from there.
First step, check the tensions of your spokes. Are there any obviously loose spokes? Tighten any loose spokes you might find.
Second step, figure out which wheel is giving you the grinding sound. Do you have a second wheelset? If so, Replace the back wheel, go on a ride, see if the noise is present, if it is, then the problem wheel is the front, otherwise you can assume that the problem wheel is the rear wheel.
Third step, check the spoke tension on the problem wheel again. I assume that you do not have a tensiometer. Use a credit card and pluck the spokes. They each should make a similar tone. Higher pitches means higher spoke tension. Lower pitches means lower spoke tension. If the problem wheel is the rear wheel, then the drive side tone/tension will be higher, and the non-drive side will be lower.