On Wed, 16 May 2001, David Honig wrote:
> There is a class of audio amplifiers which sends pulse-code-modulated
> pure square waves (ca. 1 Mhz) to the speakers, which integrate the
> pulses to produce hi-fi sound. These are currently being sold
> by e.g., TI. Pretty sweet specs and easily possible with commercial
> CMOS.
Not the same thing.
In the system I described there is no 'modulation' only 'A-D conversion'
at a fixed clock speed and pulse width. It's the numeric value of the
signal that determines the instantanious output, no integration
("Wired-OR" isn't 'integation' because there's no 'storage' or 'summing
over time', in effect no dt).
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