変へん声せい期き

noun

voice change period; puberty (age of voice change)

Refers to the stage in adolescence when the voice deepens, especially in boys. Often used in contexts of singing or voice training.

• 彼かれは変へん声せい期きで声こえが低ひくくなった。

  His voice deepened during the voice change period.

• 変へん声せい期きの子こどもは無む理りに高たかい声こえを出ださないほうがいい。

  Children in the voice change period should avoid forcing high notes.