Calculate the sampling rate for audio music, considering that our ears can detect sounds of up to 20 kHz. What do you do if music has frequency components up to 25 kHz?

3 A. We have a 4-bit DAC with Vref = 3.3V and an input voltage of Vs = 2.05V. Draw a diagram illustrating the conversion process of a successive approximation ADC. Label the x-axis conversion step and the y-axis Digital Number(DN). What digital number (DN) will be returned by the DAC within the SAR ADC? 3 B. You have purchased an 8-bit R-2R digital to analog converter to control the joint position on a robot arm (which is proportional to the input voltage). a). The DAC shows an output voltage of 0.49 V when the binary value 00011001 is applied. What is the full-scale analog output range of this DAC in volts? b). What voltage does the DAC output with a binary value of 10101010 applied? c). If the joint rotates 10.0 degrees/V applied, what is the minimum joint rotation increment you can achieve with this DAC?

Q7. You acquire a 20 Hz analog signal from sensor. Now you need to digitalize it to process it on an on- board computer. What sampling frequency would you choose and why?

5 a) Consider the sample sequence (5000, 5000, 5000, 5000, -5000, -5000, -5000, -5000}. These are samples of a square wave with a period of eight samples or 1ms at 16 KHz sampling frequency. What are the sinusoidal frequencies in the output waveform?