推荐回答（5个）
最简单的办法，也是调的最准的，是10块钱买个调音器，按调音器里面的ADCB什么的来校，校出来的是标准音高。按你这个音阶关系来调的话，用二弦3品（D）来定一弦空弦。按三弦2品（A）校二弦空弦。6弦按高八度来校，按五弦第5品校六弦的空弦音。或者弹六弦的12品泛音，看和一弦的D是不是一样高就OK。最好的就是调音器。
吉他特殊调弦分为变化调弦和开放式调弦，变化调弦是在标准调弦的基础上，整体升高或降低整个调弦音调；开放式调弦就是一整个调弦的调弦音为一组和弦。
吉他特殊调弦就是根据所弹曲目调成适合指法编排的音高编排方式，其他的琴弦依情况而定，目的是为了方便弹奏。
变化调弦：
变化调弦就是除了标准弦之外，空弦的变化组合，标准弦的用处很大，而且只有一个通用标准，很多吉他手用变化调弦开发独特的和弦音及其产生的明亮音色。
很多调弦都必须要调整标准弦有关的和弦状态，这样就会产生某个比较容易演奏的和弦，但是其他的和弦就会无法弹奏出来。
变化和弦不只是改变调弦，还需要重新设计吉他的琴弦，让吉他琴弦更加适合发出空弦音。
开放式调弦：
在吉他的演奏中，开放式调弦是把各弦调成一个和弦，这样不需要按弦就能够弹出来，这种情况下，其他和弦只要在指板上来回滑动横按就可以。
开放式调弦一般用在布鲁斯音乐和摇滚乐中国，尤其是在一些钢弦吉他及滑棒吉他上会经常用到。
所谓吉他特殊调弦其实是相对于标准调弦所说的，有时一首曲用标准调调弦弹它的和弦不好设计和编配，所用的音不太和适，特别是空弦音利用不上，严重的影响了演奏曲子的连续性，所把在不影响弹奏的前题下把弦的音重新改动一下，但初学者不要弹这种曲子，影响你日后音阶练习，从此大脑对音阶的条件反射产生混乱！
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