Determine the nyquist sampling rate for analog signals

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Reference no: EM13228208

1. Humans can hear sounds at frequencies between 0 and 22.05 kHz. What minimum sampling rate should be choosen to permit perfect recovery from samples?

2. Determine the Nyquist sampling rate for each of the following analog signals:

a. x(t)=cos(20t+12deg.)

b. xx(t)=2sin(5000pi t/3)

c. x(t)=sin(3000pi t/7)

3. A voice signal is sampled at 8000 samples per second.

a. What is the time between samples?

b. What is the maximum frequecy that will be recovered from the signal?

4. A cell phone transmits voice signals on a carrier. the transmissions lie inbetween 900MHz to 900.03MHz. What minimum sampling rate should be choosen so that the transmisions will be recoverable from the digital samles?

5. Voltages between -3V and +3V must be digitized. Find the Quatization step size when samples are quatized using:

a. 4 bits

b. 8 bits

c. 16 bits

6. How many digital codes can be prodced by an A/D converter using:

a. 8 bits

b. 10 bits

c. 12 bits

Reference no: EM13228208

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