Ordinarily, a rhinoplasty does not change a person’s voice. This is for the average person who sings recreationally (maybe at karaoke), has normal conversations, etc.  However, if you are a performer and your livelihood depends on the specific tonality of your voice, a rhinoplasty may change this.  Others may not notice any change in the voice whatsoever during conversation, but you might notice some changes, especially if you are tuned in to the subtle aspects of your voice, and especially if it is a part of your career. Nonetheless, most rhinoplasties are not likely to change your voice and nasal sound characteristics significantly, if at all.  However, if you are having significant and dramatic work done on the nose, such as alteration of the sinuses, fracturing of the turbinates, correction of a deviated septum, or radical changes in the nasal bone position, it is conceivable that your voice will be subtly different.