noun
vocal volume; voice volume
Refers to the loudness or carrying power of a person's voice, often in contexts like singing, public speaking, or acting.
彼は声量が豊かで、講堂の後ろまでよく聞こえる。
He has a powerful voice that can be heard clearly even at the back of the hall.
歌手になるには声量だけでなく、表現力も必要だ。
To become a singer, you need not only vocal volume but also expressiveness.
Compound of 声 (voice) and 量 (quantity, volume). The reading せいりょう follows the on'yomi of both characters.