Trombone Waveform
trombone 波形
小号喇叭音色由Brian Skutle提供，日期为1997年4月29日。 |
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| Trombone discussion
管乐讨论 |
Brass concepts
Brass instruments
Musical instruments
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HyperPhysics ***** 声音 | R Nave |
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Trombone Waveformtrombone 波形
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Trombone Waveformtrombone 波形
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Trombone Waveformtrombone 波形
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Trombone Pedal Tone Waveform长管阀音波形
  This is the waveform and fast fourier transform of a pedal B-flat note at 58Hz. The upper part of the illustration shows the complex waveform of the trombone pedal tone. It is complex because all harmonics of the air column contribute to it. It is the nature of a pedal tone that its frequency is not a true resonance of the air column, but all the harmonics of that frequency do correspond to resonances and help with the vibration of the air column. If the player vibrates his/her lips at the pedal tone frequency, the upper harmonics are excited, providing a strong sound for bass brass instruments like the trombone. Note in the lower part of the illustration that the fundamental is almost totally missing and strong harmonics are shown up to the 16th harmonic. 这是踏板B调音符（58Hz）的波形和快速傅里叶变换。图的上半部分显示了小号踏板音的复杂波形。它复杂的原因是空气柱的所有谐波都参与其中。踏板音的性质是其频率不是空气柱的真正共振频率，但该频率的所有谐波都对应于共振，并有助于空气柱的振动。如果演奏者以踏板音频率振动嘴唇，上部谐波会被激发，为小号等低音铜管乐器提供强响声。请注意图的下半部分，基频几乎完全缺失，而显示的强谐波一直到第16次谐波。
Brian Yontz, 2008 的 trombone 音调 |
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