how to convert digital data into analog data using matlab code?

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Sivakumaran Chandrasekaran
回答： Walter Roberson 2020-4-18
how to convert digital data into analog data using matlab code? and vice versa... i.e., converting back analog data into digital data?
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Sharada Reddy
Sharada Reddy 2017-1-31
can you tell me how is the DAC in matlab works..? Any codes to convert digital into analog signal

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采纳的回答

Azzi Abdelmalek
Azzi Abdelmalek 2013-10-25
编辑：Azzi Abdelmalek 2013-10-25
U=10; % range signal from 0 to 10
n=3 % number of bits
q=U/(2^n-1) % quantization interval
t=0:0.1:10; % your time vector
y=abs(10*sin(t)); % your signal
% -------convert to a digital signal yd-----------
a=fix(y/q);
yd=dec2bin(a,n)
% ------you can calculate the signal yq ----------
yq=a*q
%-------------------------------------------------
plot(t,y,'r')
hold on
plot(t,yq,'g')
hold off
  2 个评论
Richard Lyons
Richard Lyons 2017-1-20
Mr. Abdelmalek's code sure looks like analog to digital conversion to me. What the original poster wanted was digital to analog conversion!

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更多回答（2 个）

po-wei huang
po-wei huang 2020-4-18
You can try this sample. Here contain DAC procedure. (But quantizing is skipped.)
https://poweidsplearningpath.blogspot.com/2020/04/ch4-adcdac-how-to-simulate-adcdac.html
Walter Roberson
Walter Roberson 2020-4-18
The only built in facility for converting digital to analog are the ones that output to audio devices such as sound() or audiodevicewriter, unless you want to count graphics operators. Or if you want to include the ability to set and clear DTR on a serial port. Everything else needs to talk to a digital to analog converter.

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