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Originally Posted by BflatAnklan This demonstrates that buzzing does not create the tone. In fact, it has been proven (as we have already stated) that sound is produced by vibrations of the air-column within the horn.
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Say what? You need SOMETHING to initiate the vibration of the air column in a
repetitive fashion (otherwise you might as well become a percussionist). That "SOMETHING" is the buzzing of your lips. Yes, you can create a "tone" by tapping the mouthpiece or any other vibrating thing that will initiate an amplification...but try tapping the mouthpiece at the frequency necessary to maintain a double C!!!! Bet you find the only way you can do that is by buzzing.
You blow air through your embouchure. The air flow reacts against the tension (or compression....depending on how you look at it) to cause your chops to buzz. The buzz (which is a vibration that can have different frequencies and waveforms) is taken by the horn and amplified. Some of the resultant vibration of the air column reflects back from the bell flare to your chops to reinforce the buzz. Some of the vibration of the air column causes the horn itself to resonate and reinforce the vibration of the air column. A little bit (I believe the number is around 15%) of the vibration escapes to the surrounding atmosphere to be heard by the listener.
Without buzz there is no
sustained vibration. Without sustained vibration there is only percussion.