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发表于 2019-2-20 15:25:07
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Aaron has given you the most likely reason. The common name for the phenomenon is "Wolf Tone". Every acoustic stringed instrument on the planet has this effect, though in some individual instruments it is more or less pronounced than in others. Below that note on your fretboard, your guitar body and the string are vibrating in phase. Above that pitch, they are moving in counter-phase. The Wolf Tone is point at which the acoustic turbulence is transitioning from in phase to counter-phase. It is the threshold point. You can design an acoustic guitar that will minimize the Wolf Tone point by adding heavier bracing to keep the body from vibrating so much so you don't get such a pronounced transition but when you do that you start to lose the sensitivity and complexity of tone since your instrument is less lively. A guitar's designer has to make a tradeoff in their design, and the player has to make a decision if they want a dull and dead sounding overbraced acoustic with the Wolf Tone being almost silenced, or a lively and complex sounding acoustic with a noticeable Wolf Tone that they try to avoid hitting in their playing.
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我hd28上就是f音，别的弦还好，5弦8品上最明显，尤其手指弹，每次弹到那个位置，都会蛋疼一下！
（因为跟老板聊过喜欢布鲁斯和Dave Van Ronk的吉他风格）。在买吉他的店里除了马丁，也还试了泰勒的，也是有的，另外，在那位国外大胡子帅哥的吉他测评中也听到过几次狼音，准确的说两次以上，忘了具体的吉他型号了，好像有马丁的parlor。
