All About Digital Audio Video Devices
                     ALL ABOUT DIGITAL 
AUDIO VIDEO DEVICES
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Digital audio devices
Analog audio devices that are 
outdated now were using 
analog audio.
When sound is converted into 
digital form it is said to be 
digital audio.
Digital audio devices make use 
of digital audio.
This device uses several stages 
to produce audio output.
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Working principle of audio devices
Step 1 – Conversion of an analog signal into a digital 
signal 
Sound which is an analog signal is converted into a 
digital signal by using analog to digital converters(ADC).
Step 2 – This digital audio signal then can be modified, 
edited or amplified by sound engineers or Electronics 
engineer.
 
Step 3 – This digital audio then converted into an 
analog signal by a digital to analog converters(DAC). 
Digital audio devices
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Digital audio devices
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Digital video devices
When moving visual images 
are encoded into digital form it 
is said to be digital video.
Digital video devices make use 
of digital video.
This device uses several stages 
to produce a digital output.
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Working principle of digital video 
devices
  Digital video devices uses a series of digital images.
This series is then displayed in rapid succession.
This series of images is called a frame.
The rate of the display is known as a frame rate.
Frame rate is measured in frame per second(FPS).
Digital video devices
Digital videos are comprised of pixels.
Pixel color is always represented by a fixed number of 
bits. 
Digital videos can be copied on another device with 
zero degradation in quality.
Sony D1 firstly introduced digital video in 1986.
Digital video devices
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Benefits of digital devices over analog 
devices.
Compact models.
Faster than analog devices.
Portable.
Low cost.
Good audio and video 
quality.
Very less or zero 
harmonics.
Versatile working.
Great information storage 
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capacity.
Operate on low power.