ODP: Digital DIY synths and DSP stuff

Roman Sowa rsowa at WizjaTV.pl
Mon Jan 11 11:26:22 CET 1999


find few compiled comments:

What kind of 16-bit converters?
AD1877, AD1859, AD1851 from Analog Devices
Sound Quality - 1851 low noise, 1859 low distortion
1877 - you ned no better ADC
unles you make heavy in $$$ digital mixing console

10-bit DAC PIC-based envelope
Yeah I think it would be enough, but with 10-bits you have to
use double precision calculations. Maybe no problem for C
but I use assembler only. (I have no C!)
Then we get to the point when analog ADSR becomes better option.
Personally I'd use digital envelopes only in all-digital synth

Bit resolution in floating point
Maybe someone could make some experiments and tell us all
if it is really heard.
And if SHARC's MAC result is stored in 40-bit float does it really
suffer from low headroom?

AN1x tweek
I ment playing with this as it is. No mods. Kinda minimalist for a DIYer
but if you asked me what I would do with spare 1k$...
And Ben, if you have AN1x, please open it and make some pictures too.

Roman






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