Generally speaking, women's voice tends to become more hoarse with age if they are smokers.
As for the men, their voice tend to get higher in pitch.
ご質問ありがとうございます。
"Generally speaking,"＝「一般的に、」
"women's voice tends to become more hoarse with age"＝「年齢とともに女性はだみ声になる傾向がある」
"if they are smokers."＝「彼女たちが喫煙者だと。」
"As for the men, their voice tends to get higher in pitch."＝「男性の場合、声が高くなる傾向がある。」
ご参考までに。
アメリカ合衆国 
