Tuning refers to the process of adjusting the pitch or frequency of a musical instrument to ensure it produces the correct notes. For example, a guitar is typically tuned to standard pitches like E, A, D, G, B, and E. This adjustment can be done using electronic tuners, tuning forks, or by ear. In a broader context, tuning can also apply to optimizing systems or processes, such as computer algorithms or automobile engines. In these cases, tuning involves making adjustments to improve performance, efficiency, or accuracy, ensuring that the system operates at its best.