Tuning pianos involves a combination of skills, including the ability to perceive pitch and intervals accurately. While having good hearing can be advantageous in this regard, there have been cases of deaf piano tuners who have successfully tuned pianos using alternative methods.
Some deaf piano tuners rely on visual cues or tactile sensations to guide their tuning. For instance, they may observe the vibrations of piano strings or use specialized tools to sense minute changes in pitch. Others may employ electronic tuning devices or software that provides visual feedback.
It's worth noting that piano tuning requires a combination of technical knowledge, experience, and musical sensitivity, regardless of whether the tuner is deaf or hearing. With the proper training and adaptive strategies, a deaf person can potentially develop the necessary skills to tune pianos effectively.