The Basic Concept
of digital AMP
1) PCM Signal :
The height of sample gives information.
2) PWM Signal :
The width of sample gives information.
- Possible to
amplify by simple switching
- Possible to
restore the original signal by Low Pass Filter
Advantages of
digital AMP
1) Switching Amplification à to minimize the
loss of transistor
- High
efficiency (over 90%)
- Light weight
& compact size
- Reducing the
cost of power supply
2) Digital
processing in overall stages
– one-chip ASIC
- High sound quality
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