What is Sound and How is it ProducedSound is a form of energy that produces the sensation of hearing in our ears. Frequency range of audible sound for human is between 20Hz to 20 KHz Sound need Material to Travel: You have learnt in previous section that vibrations produce sound. To produce vibrations, we need a material body. Therefore, we can say that a medium is … [Read more...] about What is Sound and How is it Produced