People's privacy can also be interrupted by unwanted phone calls from telemarketers and others who wish to profit in some way - just as Internet e-mail accounts receive unwanted sales pitches, known as spam.. Yet, the invention of the telephone also worked to increase privacy in many ways.
Rosin build up on violin strings can make them sound scratchy. Although applying rosin to the bow is important to create friction when the bow is pulled across the strings, too much rosin on the strings can reduce the strings ability to vibrate. Clean the rosin off your strings regularly to reduce any scratchy sounds.
Eustachian tube dysfunction usually occurs due to allergic cold and cough. TMJ (temporo-mandibular joint) disorder can also result into crackling sound in the ear. The joint is located just in front of the ear. The noise from this joint can simulate as noise from the ears. Spasm of muscles inside the ear can be a reason for clicking and crackling sound in the ear.