BMEN 3311– HW 1
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1. There are two matrices:
A = [3 1 5; 3 1 3; 1 2 5]
B = [5 3 3; 5 5 2; 1 2 1]
Calculate A.*B and A*B.
2. A signal has a voltage of 6.5 V. The signal is corrupted by an average of 1.2 V of noise. What is
the SNR?
3. What are the two necessary steps to digitizing an analog signal?
4. What is the sampling period for a signal with a sampling frequency of 2.5 kHz? How many
samples are obtained after a 1.5 minutes? At what time was sample 12500 taken?
5. A signal contains the following frequencies, 100 Hz, 247 Hz, and 750 Hz. What is the
Nyquist frequency of the signal?
6. If an 8-bit ADC accepts input voltage from -5V to 5 V, calculate: (a) number of
quantization levels (b) resolution of ADC (c) quantized value of 2.5 V.
7. For a digital signal x[n] (see figure below), draw the y[n] = 2*x[-3n + 2]
Submit your work to the Canvas
Name:
ID:
1. There are two matrices:
A = [3 1 5; 3 1 3; 1 2 5]
B = [5 3 3; 5 5 2; 1 2 1]
Calculate A.*B and A*B.
2. A signal has a voltage of 6.5 V. The signal is corrupted by an average of 1.2 V of noise. What is
the SNR?
3. What are the two necessary steps to digitizing an analog signal?
4. What is the sampling period for a signal with a sampling frequency of 2.5 kHz? How many
samples are obtained after a 1.5 minutes? At what time was sample 12500 taken?
5. A signal contains the following frequencies, 100 Hz, 247 Hz, and 750 Hz. What is the
Nyquist frequency of the signal?
6. If an 8-bit ADC accepts input voltage from -5V to 5 V, calculate: (a) number of
quantization levels (b) resolution of ADC (c) quantized value of 2.5 V.
7. For a digital signal x[n] (see figure below), draw the y[n] = 2*x[-3n + 2]
