Does your violin have a wolf tone?
A while back, I realized that one note on my violin always sounded terrible. It was a C# on my G string. I assumed I was just not hitting the note quite right, but no matter how precise I was, it never sounded good. Finally in desperation, I googled it. I found out that many people have the same problem with the same note. This is called a wolf tone.
How do I fix it?
Once you realize that your violin has a wolf tone, you can easily fix it by using a wolf eliminator, like Wolf-Be-Gone.
I use this and am happy with the result.
If you want to see what a wolf tone is like on a cello, check out this video by Shar Music. On my violin, the tone didn't resonate nearly as much as that, but the tone wasn't clear.
I hope this helps answer some questions if some of you are struggling with a wolf tone like I was!