People who have an absolute sense of sound can tell what kind of sound it is from the noise that is usually unnoticed. Absolute sense of sound means that the listener can distinguish the name and pitch of any sound before giving a reference sound. Any sound here is of correct pitch, and does not contain noise or unclear pitch.
More importantly, it can distinguish the individual names and positions of a group of sounds. Relative sound sense generally refers to giving a reference sound, which can correctly distinguish the relative relationship between other sounds and the interval or tonality of this reference sound.
Is absolute sense of sound common?
In most cases, absolute sense of sound is an innate skill; However, it is not impossible to cultivate an absolute sense of sound by memorizing the pitch of reference sounds and practicing a lot.
It is reported that the following seiyuu have an absolute sense of sound: Kawasumi Ayako, Nakamura Eriko, Toyonaga Toshiyuki, Gao Shannan, Dasenliya and Guangbu Shu.