国际第一标准音高：A=440HZ
国际第二标准音高：A=439HZ
国际第三标准音高：A=438HZ
十二平均律
A=440Hz
一弦空E:f=A/2^(5/12)=329.6276Hz
二弦空B:f=A/2^(10/12)=246.9417Hz
三弦空G:f=A/2^(14/12)=195.9977Hz
四弦空D:f=A/2^(19/12)=146.8324Hz
五弦空A:f=A/2^(24/12)=110.0000Hz
六弦空E:f=A/2^(29/12)=82.4069Hz
final int A = 440;
final String[] NAME = { “E1”, “B”, “G”, “D”, “A”, “E” };
List
tune = six(A);
private static List
six(int A) {
List
list = null;
try {
list = new ArrayList
();
final double[] NUMBER = { 5, 10, 14, 19, 24, 29 };
for (int i = 0; i < NUMBER.length; i++) {
double x = Math.pow(2, NUMBER[i] / 12);
list.add(A / x);
}
} catch (Exception e) {
e.printStackTrace();
}
return list;
}
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