Precautions

These contain high-pitched sounds that Teenager Repellent "Mosquito" emits. Will cause discomfort in certain people. In spite whether you can or can't hear, do not play on at top volume not to damege your speakers.

Webmaster, its.


Language: Japanese English


FLASH #1; It will test how high you can hear frequently.

The sounds that adult can't hear


To start, click on the cat.

*It will truly emit high-pitched sounds.

There are differences in the limits of audibility among individuals.
Many ordinary 20's and 30's can't hear higher than 14,000Hz.
Don't worry if you can't hear. It's a kind of normal and natural aging phenomena.

♣LINKS
saitama_orz - There's another test, 8K to 21KHz test in WMV.
*sorry but the page that the link represents is written only in Japanese.


FLASH #2; It will test how high you can hear one by one.

Click button to test.


*Notes available at blog, written in Japanese...sorry.


Addition; It will test how low you can hear.

Click button to test.

*I have no data about low-pitched sound. Just for the interest.

Tweleve-tone scale is defined as the table below.
f = F * 2n/12
f:frequency to calculate, F:base frequency, n:number of halftones
  CC#DD#EFF#GG#AA#B
1 32.70 34.65 36.71 38.89 41.20 43.65 46.25 49.00 51.91 55.00 58.27 61.74
2 65.41 69.30 73.42 77.78 82.41 87.31 92.50 98.00 103.83 110.00 116.54 123.47
3 130.81 138.59 146.83 155.56 164.81 174.61 185.00 196.00 207.65 220.00 233.08 246.94
4 261.63 277.18 293.66 311.13 329.63 349.23 369.99 392.00 415.30 440.00 466.16 493.88
5 523.25 554.37 587.33 622.25 659.26 698.46 739.99 783.99 830.61 880.00 932.33 987.77
6 1046.501108.731174.661244.511318.511396.911479.981567.981661.221760.001864.661975.53
7 2093.002217.462349.322489.022637.022793.832959.963135.963322.443520.003729.313951.07
8 4186.014434.924698.644978.035274.045587.655919.916271.936644.887040.007458.627902.13
(9) 83728869939799561054811175118391254313289140801491715804
(10) 167441773918794199122109622350236792508726579281602983431608
*The tone O4-A is defined as 440Hz.

♠O1C-D-E-F-G-A-B-O2Cmp3
♠O2C-D-E-F-G-A-B-O3Cmp3
♠O3C-D-E-F-G-A-B-O4Cmp3
♠O4C-D-E-F-G-A-B-O5Cmp3
♠O9C-D-E-F-G-A-B-O10C-D-Emp3
*Please play on your media player with spectrum display enabled.
You can check whether it really emits sounds.