[10 marks] Consider an audio signal with spectral components in the range 400 to 4200 Hz. What is the minimum sampling rate to be used to generate the PCM signal? (2.5 marks) For quantization noise SNRdB-36 dB, what is the number of uniform quantization needed? (2.5 marks) a. b. c. What data rate is required? (2.5 marks) d. If the dynamic range of the signal is -5V to +5V, what are the PCM codes for voltage levels -3.3V and +2.9v? (2.5 marks)