Sautin kai tsaye shine sauti wanda aka fitar daga mai magana kuma ya kai mai sauraro kai tsaye. Babban halayyarsa shine tsarkakakke, wato irin mai magana ne mai kama da kayan sauti na kayan ado na ciki. Sabili da haka, tabbataccen sauti tabbatacce ne da kuma amincin sauti yana da yawa. Babban manufa ce a cikin zane na Apoustics na zamani ita ce cikakkiyar sauti ta kai tsaye daga masu magana da kuma sarrafa sautin da aka bayyana kamar yadda zai yiwu. A cikin daki, hanya don sanin ko lambar sauraro na iya samun sautin kai tsaye daga duk masu magana da sauki ne, gaba daya amfani da hanyar gani. A cikin sauraren sauraron, idan mutumin da ke sauraren yanki zai iya ganin dukkan masu magana da za su iya ganin duk masu magana, kuma ya kasance a yankin da duk masu magana suke da masu magana da kai, za a iya samu sautin kalmomin kai tsaye.

A karkashin yanayi na yau da kullun, dakatarwar mai magana shine mafi kyawun bayani don sautin kai tsaye a cikin daki, amma wani lokacin saboda mai ƙarancin ƙasa a cikin ɗakin, mai iyakance mai ƙididdiga na iya zama wasu ƙuntatawa. Idan za ta yiwu, ana bada shawara a rataye masu magana.

Kakakin yana nuna kusurwar mutane da yawa yana cikin digiri 60, kusurwar kusurwa ba za a iya ba, don haka lokacin da sauraron sauraron ba zai iya daidaitawa da matakin kunnuwan mai sauraro ba. Lokacin da mai magana ya rataye shi, mabuɗin shine a daidaita kusurwar masu magana da su guji shafi sakamako mai ban tsoro.

Lokacin da mai magana yake wasa, kusancin yake kusa da mai magana, mafi girman girman sautin kai tsaye a cikin sauti, da kuma karancin sauti; mafi nisa daga daga mai magana, da karami gwargwadon sautin sauti kai tsaye.