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Originally Posted by Boplicity  A very interesting conversation! Has anyone (in the literature) weighed in on the difference that muscle tension makes in the resonance of the whole system? |
Anybody that "bends" notes does exactly this. When you do not play on the resonant center of the horn, you lose efficiency and uniformity of sound. That is also why a good slotting trumpet better be in tune.
The trumpet does not help amplify off resonance notes. What comes out of the bell is essentially the same volume as what would come out of the mouthpiece alone.