音声 (おんせい)voice; speech; sound of a voice

音声, its kanji, and other words that share them.Open this graph

Kanji in 音声

音楽おんがくmusic
音おとsound; noise
本音ほんねreal intention; motive
騒音そうおんnoise; din
六十四分音符ろくじゅうしぶおんぷ64th note; hemidemisemiquaver
録音ろくおん(audio) recording
音響おんきょうsound; noise
音色ねいろtone color; tone colour
声こえvoice
声明せいめいdeclaration; statement
歓声かんせいcheer; shout of joy
声援せいえん(shout of) encouragement; cheering
声楽せいがくvocal music
第一声だいいっせいfirst words said (e.g. when meeting someone); first thing out of one's mouth
掛け声かけごえshout (of encouragement, etc.); yell (used to time or encourage activity, e.g. "Heave ho!")
歌声うたごえsinging voice; (sound of) singing

See how 音声 connects to the rest of Japanese.