Flag of Germany: Flag of Germany, horizontally striped flag of black, red, and gold (golden yellow); when used for official purposes, it may incorporate a central eagle shield.
Most of the websites i have looked at, say that the frequency of middle C note is approximately 261.626 Hz. and that middle C on guitar is at the 5th string 3rd fret. but my tuner says the frequency at the 5th string 3rd fret is 130.81 Hz.
It is common for people to experience slight hearing loss as the age. This is caused by changes in the inner ear. An average middle-aged person can detect a maximum frequency of 12,000 Hz to 15,000Hz. Some animals have wider frequency ranges. For instance, dogs have an average frequency range of 67 to 45,000 Hz, and dolphins have a maximum frequency range of up to 100,000 Hz. Learn more about Human Anatomy