Strictly speaking, encoding is not used in Class D. There is no conversion of one type of data to another. Instead Class-D relies on feedback, and a great deal of it. It is a comparative technique.Thanks pretty funny! :)
That’s the nature of Class D and why it remains overall an analog process.
The Technics uses no feedback. It has at least 3 processing steps:
1 - Initial encoding from Analog to Digital
2 - Signal processing(alters the input signal to match the speaker behavior)
3 - PWM
Away with your nonsense, but I expect you will write four pages of barely related word salad to reply.
Feedback (self oscillating) is one of three methods of encoding. The others are PWM and sigma-delta (Pulse Density Modulation). PWM allows the designer to build a zero feedback circuit.
Some form of encoding/modulation is of course required to make a class D circuit. Strictly speaking :)
Since you think this is all hand waving, see:
https://www.analog.com/en/analog-dialogue/articles/class-d-audio-amplifiers.html
(a short introduction to class D amplifiers by a manufacturer of class D amplifier ICs)
