weird resonance or something else?
This past summer I purchased a German factory violin (Schweitzer copy 1813, probably 1870's or so). I had a new sound post, bridge, and tailpiece installed. Likewise I had a few open seams and a bass side f-hole crack repaired. Whereas this a lovely instrument, I noticed an interesting phenomenon that I've not experienced before. The B (third line treble clef) is exceptionally louder than the other notes around it, even in different positions. Similarly, the G# (top of the staff) has the same tendency. The "resonance" disappears in different octaves. Is just something weird?
The instrument was not playable before purchase and the previous owner bought because of the bow that accompanied it. He just did not want to invest money in fixing to be playable due to numerous other instruments to has.
Do you get strange sounding vibrations if you tap on the violin's belly?
I haven't tried the tapping, will do it tomorrow. Yes, I do get the same response on other strings. Lower B is fractionally louder, though I think it is just my perception because it makes sense to my mind. Low G#'s are normal.
It's very difficult to change the resonances of the body by changing the setup, or so I hear. It's probably the construction of the instrument.
You can get an Iphone or Android audio spectrometer apps. This will display an audio spectrum of notes as you play them. So you could play various notes including B and G# and and look at the fundamental and overtone spectra - perhaps the peaks for these notes will be much higher than for other notes.
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