Assume we want to transmit the audio signal with frequency range from 200 Hz to 3 kHz through telephone line. (i) If we want to transmit the signal at 12 bit per sample, estimate the minimum bandwidth required for the transmission. By using non-linear quantization, we can reduce the data size, say at rate 8 bps and at the same time still maintain the perceived level of audio quality. Explain how it is possible. If we transmit the data at rate 4000 sample s, it will cause the aliasing at the receiver. Explain the meaning of aliasing and calculate the aliasing frequency