聞(き)き分(わ)けるto recognize (by sound), to identify, to differentiate (voices, sounds, etc.), to distinguish, to tell (the difference) by hearing, to hear the difference (between)

辞書の定義

一段動詞, 他動詞
1. 1.
  EN to recognize (by sound), to identify, to differentiate (voices, sounds, etc.), to distinguish, to tell (the difference) by hearing, to hear the difference (between)
2. 2.
  EN to (listen and) understand, to listen to reason, to be reasonable