Answers

2014-11-03T11:18:16+05:30

This Is a Certified Answer

×
Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
A digital signal is converted into an analog signal by the use of an electronic circuit or device called Digital to Analog converter.  It is also called DAC or D2A converter.

The amplitude of the digital signal is converted into a voltage level or current.  The digital sound recorded on DVDs are fed as digital signals to a DAC in a DVD player.  DAC converts that into current and amplifies (increases) the current depending on volume control and feeds into the speaker. So we hear the sound.

DAC :
 
   It contains a low-pass filter (called a reconstruction filter) that eliminates very high frequency components in the input digital signal. 


0