...This conversion from Analogue to
digital is performed by an aptly named
Analogue to Digital Converter chip,
ADC for short. The BBC has a build in
ADC for analogue joysticks but this is
too slow for the frequencies in sound.
The computer using the sampler must be
driven by suitable software which takes
a sample and saves it to disk. Once the
sample is saved to disk, your own prog
can load it and use a little machine
code routine to play back the sample.
The BBC's sound system however leaves a
lot to be desired when playing back
samples and playback quality can be
disappointing.