Sound Waves Post

This is my first post on sound waves (:

Question 1 - Sound movies through what medium?

 
















Sound travels in mechanical waves. A mechanical wave is a disturbance that moves and transports energy from one place to another through a medium. In sound, the disturbance is a vibrating object. And the medium can be any series of interconnected and interactive particles. This means that sound can travel through gases, liquids and solids.

Question 2- What unit is used to measure sample size?
Sample format or sample size: Essentially this is the number of digits in the digital representation of each sample. Think of the sample rate as the horizontal precision of the digital waveform, and the sample format as the vertical precision. An audio CD has a precision of 16 bits, which corresponds to about 5 decimal digits.Question 3- what unit is used to measure sample rate?Sample rate: The rate at which the samples are captured or played back, measured in Hertz (Hz), or samples per second. An audio CD has a sample rate of 44,100 Hz, often written as 44 KHz for short. This is also the default sample rate that Audacity uses, because audio CDs are so prevalent.

Question4- Compare the quality of AM, FM and Digital radio.

AM (amplitude modulation) When the carrier wave is changed by its amplitude. The operating frequency is expressed in kilohertz (kHz).

FM (frequency modulation) When the carrier wave is changed by the frequency or varied dependent on the amplitude. The operating frequency is expressed in megahertz (MHz).

Digital TransmittingDigital radio is the next generation of radio. It is a revolutionary audio broadcasting technology, which dramatically improves sound quality, and will enable you to receive value added radio services for free.

By using the information gathered you can see that digital radio has the best quality, but i haven’t heard digital radio.....so in my opinion FM radio has the best quality based in what I’ve heard.