"Native sound" or "authentic sound" are both ways to say "原生态声音" in Engpsh. "Native sound" refers to the natural, unaltered sound of a person or thing, while "authentic sound" refers to a sound that is genuine or true to its source. You could use these phrases to describe the sound of a person speaking their native language, or the sound of an instrument being played in its traditional style. For example, you might say "I love the native sound of the piano in this recording" or "The singer's authentic sound really captures the essence of the music."