3. What unit is used to measure sampling rate?
DEFINITION
Samples rate : rate at which samples are captured.
Sample rate is measured in hertz (Hz) / this allows digital recording to record higher frequencies of sound.
NTS : humans can’t hear above 20 000 Hz . More common ones are 96 and 192 KHz
4.Compare the quality of AM, FM and Digital radio.
AM (amplitude modulation)is when the carriere wave is changed by changing its amplitidue. The operating frequency is expressed in kilohertz (kHz).
FM (frequency modulation)provides high quality signal and clearer sound. It has a very high frequenct. the frequency wave is changed according to the amplitude and pitch of the signal. It is expressed meghuerts (MHz)
Digital Transmitting Digital radio is the next generation of radio. It allows better sound quality and a broader signal
This shows that digital transmitting is the most effective.
Personally I would stick with FM.
No comments:
Post a Comment