The original ultrasonic ringtone high frequency hearing test
Can I hear ultrasonic ringtones?
Find out just how far your ears can hear into the range of ultrasonic ringtones. Pretty much everyone should be able to hear the lowest tone (8kHz). Many people should be able to hear up to around 14.1kHz, from around 17kHz upwards we get into the range that only the under 20's can hear!
一般来说，我们能听到的声音最低是 8K 赫兹，大多数人可以听到最高 14.1K 赫兹；
从 17k 赫兹开始，应该只有少数小于 20 岁的人才能听到哦~