Can any one tell me how i convert analoge signal (Excel file captured from data aquisiton system) to digital form by Matlab

Matlab code for ADC

Answer 1

[ES]

do an xlsread and get the data from Excel File.

Clean Data if needed (removing NaN etc)

Write a quantizer to get digital signals!!

eg:

SignalLowLimit=-10;
SignalHighLimit=10;
NoOfLevels=32;
LevelWidth=(SignalHighLimit-SignalLowLimit)/NoOfLevels;

then run a forloop over your signal, check the value+-LevelWidths and convert it to binary use dec2bin

Answer 2

[Walter Roberson]

If it is in an Excel file in captured form then it is already in digital form. See xlsread() to read the file.