In the application of typical digital signal processing, explain the concept of operation in Speech Coding and Compression.
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- Discuss the major differences between analog and digital data acquisition. How do the number of bits in the ADC register and the dwell time affect the results? How are quantization errors minimized? What is a signal/noise ratio? How can SNR be optimized?(b) Consider a voice signal from a analog telephone which needs to be digitized. Explain the steps involved in the conversion of analog to digital signal. If suppose the sampled analog values are 1V, 2V, 3.5V and 4.5V, use a 2 bit quantizer to digitize these values. Assume the range of sampled analog values from 0V to 5V. Provide the digitized values of this signal and draw the digital signal.Describe the differences between, (i) Analog and digital communication systems (ii) Digital modulation and digital transmission.
- Explain the Analog to digital conversion in digital signal processing with each step elaboratedAn information or message signal represented as voltages or currents with infinite number of possible values is called as; a. Modulated signal O b. Digital signal O c. Discrete signal O d. Continuous Variable3. Some GPS receivers use 1 bit ADCS (Analog-to-digital Converters) to sample and quantize the signal i.e. the output of the ADC is simply 2 quantization levels: -1 or +1. This is typically done to save on power. (a) What is the quantization SNR? How does it compare to typical thermal noise SNR of a GPS signal before correlating with the CDMA code? (b) Justify, how come it is possible to sample the signal using a single bit and still get good performance.