🚀 go-pugleaf

In article <1992Aug15.220915@aifh.ed.ac.uk> rbs@aisb.ed.ac.uk writes:
>
>Following on from this, I had the idea that an integrated digital CD
>stage class D amp could be constructed where no analgue stage would be
>needed. The circuitry would convert from the PCM data from the disk
>to PWM signals for the loudspeakers.

Circuitry to convert 16-bit data at 44.1 kHz to digital data at about
1.5 MHz is readily available - that's exactly how the "1-bit" DACs
work.  Whether you could build a class-D power amp that would amplify
this signal without radiating RF all over the place is another question,
but if you could, it would eliminate analog stages entirely.  And it
would be efficient.