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1。incorrect position of the tongue, i.e. too low in the mouth (oral cavity), producing an 'AW' sound rather than an 'OO' sound
2。insufficient air flow, caused either by insufficient breath taken or a tightening somewhere between the lungs and the lips
3。insufficient use of what is normally termed the diaphragmatic muscles, so that the air flow is not correctly 'supported'.
So essentially the problem is quite a simple one but the solution is a correct balance between solving the three areas listed above in the right proportion, depending what is the most seriously defective. I'm sorry if this sounds a little complex in its explanation but seeing as you asked the question I feel I want to help in as accurate way as possible. Its a bit like phoning your doctor and saying 'it hurts when I walk, can you give me a pill to take' ,...it is probably one of two or three things !!!
So , explore what vowel sounds you make when you blow through the instrument, think AH for the middle tones, AW for the low, and OO for the high, almost as if you are half whistling through the instrument. Do more slow deep breathing exercises so that it feels as if you stomach is expanding when you breath and as you blow the air out, slowly, feel the abdominal muscles supporting the air until there is nothing left. Then do the same on long notes , from middle G down to low G. also work on sustaining low pedal C for 10 seconds with no variation in tone/dynamic. As a general rule the better your high register gets the more you will have control over the high notes. Keep the lips as open as you can and maximize air flow at all times - Hope this helps!
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楼主: 音乐瞬间
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