1)Sounds move 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 medium.
2)What unit is used to measure sample size?
Sound is measured in bits.
3)What unit is used to measure the sampling rate?
The rate at which the samples are captured or played back, measured in Hertz (Hz), or samples per second.
4)Compare the quality of AM, FM and Digital Radio?
AM (amplitude modulation)-is a system of radio transmission in which the carrier wave is modulated by changing its amplitude. The operating frequency is expressed in kilohertz (kHz).
FM (frequency modulation)-is a broadcasting mode in the VHF (very high frequency) broadcasting bands. It provides a high quality analogue signal, and is relatively free from static, in which the frequency of the transmitted wave is modulated or varied in accordance with the amplitude and pitch of the signal. The operating frequency is expressed in megahertz (MHz).
Digital Transmitting-Digital 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.
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