[sdiy] DSP MIDI Synth (was Re: 566 Functional Replacement)

[paula at synth.net]

Umm, the three demo videos all have background click from fingers on 
keys, plugging in cables, etc.

On 2018-03-19 12:09, Roman Sowa wrote:
> That demo was line recorded.
> Unless you mean my terrible lack of musical skills to play something
> with it which might be called "music" by more than 2 people.
> 
> IIRC it abuses serial port as PWM at not impressive frequncy, and
> audio should be filtered down to some 3kHz or so. This example used
> simple RC filter as suggested in the user manual.
> 
> And about Jan Ostman being an enigma - I got the chip really quick and
> with no problems, but OTOH I think it was the one and only thing in
> his store back then.
> 
> Roman
> 
> W dniu 2018-03-19 o 12:53, paula at synth.net pisze:
>> 5 voice paraphonic, not monophonic..
>> 
>> it's just nuts, I'd love to hear some better quality demos (i.e. 
>> non-mobile phone microphone)
>> 
>> On 2018-03-19 11:30, Tom Wiltshire wrote:
>>> That’s an interesting read.
>>> 
>>> There’s several things that strike me straight away:
>>> 
>>> 1) Naive oscillator waveforms with no band limiting
>>> 2) Linear envelopes with 30ms steps, so no fine adjustment at the 
>>> fast end
>>> 3) Very basic filter code
>>> 
>>> I still think getting a entire DSP mono synth into an 8-pin DIP is
>>> quite impressive, especially in C, but a 32-bit ARM chip can produce
>>> better sound than this is going to.
>>> 
>>> Tom
>>> 
>>> ==================
>>>        Electric Druid
>>> Synth & Stompbox DIY
>>> ==================
>>> 
>>>> On 19 Mar 2018, at 10:16, Vladimir Pantelic <vladoman at gmail.com> 
>>>> wrote:
>>>> 
>>>> On 18.03.2018 19:31, Roman wrote:
>>>>> And it sounds like crap and makes unpredictible things.
>>>> 
>>>> that's perfect for a Eurorack module then! ;)
>>>> 
>>>> 
>>>> btw, source code is here for the curiously inclined:
>>>> 
>>>> https://www.hackster.io/janost/the-dsp-gplug-midi-synth-80b2aa
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