Signals and Systems course !! Please ignore the selected anwser i do not know if

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Signals and Systems course

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Question 7 The Electro cardiology signal (ECG)is a recording o (usually human) heart-rate as a function oftime and it is a very popular and valuable diagnostichealth monitoring tool. You wish to design a wearable digital ECG monitor with the following (selected) specifications: Number of ECG channels: 2 (so you will record ECG two locations on the body): sampling frequency: 200 Hz. Sampling resolution: 16 bits (each sample will be represented by 16 digital bit) Assuming that you wish to store up to approximately3hours of recording. what minumum amount of memory would you use in the monitor? 01 MB (megabytes) 3 GB (gigabytes) o 100 MB (megabytes) o 3 MB (megabyte) o 100 kB (kilobytes) o 1 GB (gigabyte) 10 MB (megabytes) More than 3 GB 300 kB (kilobytes) o 30 MB (megabytes o 10 kB Gilobytes) 300 MB (megabytes)

Explanation / Answer

Total no. Of channels = 2

sampling freq = 200 i.e. 200 samples per second

Bits to store one sample = 16

total time = 3*60*60 seconds

hence total no of bits = 2*200*16*3*60*60/(1024*1024) Mb

= 65.9 Mb

Hence the answer closest to this is 100 Mb which is the correct answer

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