Generate a tone between 1 and 22000 Hz.
Simply test your hearing or send a constant signal to your loudspeakers.
Be advised that some people or animals mind find higher tones annoying.
生成1到22000赫兹之间的声音。
简单地测试你的听力或发送一个恒定的信号到你的扬声器。
注意,有些人或动物介意寻找更高的音调烦人。