> easier time playing tonal music with some sort of MCU than a 555

I'm making an ADSR/LFO with a PIC and I2C DAC, and tables
with a simple binary-weighted resistor ladder can reproduce many
waveforms fairly easily with just a little filtering to smooth the bumps.

Discrete circuitry might be authentic, with all its little quirks, but not
quite so easy to make major modifications or enhancements, and
that sort of experimentation is part of the fun

For example pots can be given completely different functions in s/w
as selected by a switch or say if you want to add sustain levels to an
ADSR you just hook up more pots to more analogue inputs and PICs
aren't short of those

Some way through an audio delay based on the dsPIC33...802
(which has the 16-bit stereo audio DAC) + external RAM, partly
as an exercise, partly because it will be cheap to reproduce a unit
with just a couple of major chips so I can make as many as I want.
Fidelity should be maintained no matter how long the delay by
using as long a circular buffering system as necessary. That would
be hard to achieve with BBD devices because of their low-pass
nature when slow clocks and many stages are used. Neither is a
better sound, just different, like transistors vs valves

Joe


-----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2016.0.7442 / Virus Database: 4537/11685 - Release Date: 02/23/16

--=20
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.