image: Podiatrist Andrew Sharpe will use the new Doppler sound database to help practitioners to know exactly what to listen for in people with suspected arterial disease. view more HANDHELD devices ...

We have all heard the change in pitch when an ambulance or police car drives by with its siren blaring. The pitch is higher as the vehicle comes toward you, and shifts to a lower pitch as it goes away ...

Sound is a form of energy. It is that form of energy which makes us hear. Sound wave is a vibratory disturbance in a medium which carries energy from one point to another without there being a direct ...